ISD 1400 series Single-Chip Voice Record/Playback Devices 16- 20-Second Durations handbook
Contents
1. Chart 1 Record Mode Operating Current Chart 3 Standby Current Isp lcc Es 0 30 4 14 T T f 12 30 254 E En Am p 50 20 5 gt o O 8 E 2 90 15 5 6 o 9 b o 4 0 10 2 9 40 25 70 85 n zi zB 85 Temperature C Temperature C 4 5 Volts 5 5Vols 4 5 Volts TSS VOS Chart 2 Total Harmonic Distortion Chart 4 Oscillator Stability 0 5 1 5 gt 10 0 4 amp c M Y o 05 2 o t 8 03 8 ot E 5 a Lud t 5 0 5 0 2 O S o o 10 n 0 1 4 5 2 0 0 40 25 70 85 ag 2 70 85 Temperature C Temperature C 5 5Volis 4 5 Volts m 5 5Volts 4 5 Volts 10 Voice Solutions in Silicon Table 8 Die Condition Junction temperature Storage temperature range Voltage applied to any pad Voltage applied to any pad Input current limited to 20 mA Vcc Vss Absolute Maximum Ratings Value 150 C 65 C to 150 C Vss 0 3V to Vcc 0 3V Vss 1 0 V to Vcc 1 0V 0 3 Vto 7 0 V 1 Stresses above those listed may cause permanent damage to the device Exposure to the absolute maximum ratings may affect device reliability Functional operation is not implied at these conditions Symbol Parameters Min2 Vi Input Low Voltage Vin Input High Voltage VoL Output Low Voltage VOH Output High Voltage lcc Vcc Current Operating EE lsg Vcc Current Standby REI li Input Leakage Current EN lu Pp Input C2. JWi n ised e sue dtc E d E a SO near ard ada 5 TIMING DIAGRAMS cuneta a turae epa rare bs a d Qn pe od aeq de rece ee dr e 6 TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE PACKAGED PARTS 0 0 0 10 TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE DIE 0 0 00 ees 14 FUNCTIONAIEDESCRIPTON EXAMPLE 2 2 tees ceca t tht Dt Peto Fono Tee Aa Ee beds 15 APPLICATIONS NOIE vs e LE RERO ESL LACREET UY RO RU e E REC s 16 ISD1400 SERIES PHYSICAL DIMENSIONS sisseiee tae 17 ORDERING INFORMATION 3 4 rpp 032 BAN e DR RD BRL bera tele LE ee RSS 21 ISD 15D1400 Series FIGURES CHARTS AND TABLES IN THE ISD1400 SERIES DATASHEET Figure 1 ISD1400 Series PIN UTS ecce y ee Se ced Ce e SR tex 2 Figure 2 Pom LE LEID O NO EI 6 Figure 3 Playback A AN 6 Figure 4 Application Example ede a adeat dor e ede aan dee a ees 15 Figure 5 28 Lead 0 600 Inch Plastic Dual Inline Package PDIP P oo es 17 Figure 6 28 Lead 0 300 Inch Plastic Small Outline Integrated Circuit SOIC S 18 Figure 7 ISD1400 Series Bonding Physical Layout iiis 19 Chart 1 Record Mode Operating Current lee cora bora E eR RR ORE ERES 10 Chart 2 Tetal Harrenic DISIGMION seas Suc XP Re Rp Ye er Wa ai 10 Chart 3 Standby S ulfen es a urs ud an da dva APER eR beds SO EPI SCRIP PI RERO 10 Chart 4 Oscllator Stable aet aat e e ot ata dt det tact o tact ed 10 Chart 5 Record Mode Operating Current lees o 24 54 i
3. In addition to providing simple message playback the ISD1400 series provides a full addressing ca pobility The ISD1400 series storage array has 160 distinct adaressable segments providing the following resolutions See Application Information for ISD1400 address tables Table 1 Device Playback Record Durations Minimum Duration Part Number Seconds ISD1416 100 ms ISD1420 125 ms 15D1400 Series Figure 1 ISD1400 Series Pinouts ISD1400 AO Veco Al REC A2 XCLK A3 RECLED A4 PLAYE A5 PLAYL NC NC NC ANA OUT A6 ANA IN A7 AGC NC MIC REF Vssp MIC Vssa VCCA SP SP DIP SOIC NOTE NC means must Not Connect PIN DESCRIPTION NOTE The REC signal is debounced for 50 ms on the rising edge to prevent a false retriggering from a push button switch VOLTAGE INPUTS Veca Vccp Analog and digital circuits internal to the ISD1400 series use separate power buses to minimize noise on the chip These power buses are brought out to separate pins on the package and should be tied together as close to the supply as possible It is im portant that the power supply be decoupled as close as possible to the package GROUND INPUTS Vec Vesp Similar to VccA and Vecp the analog and digital circuits intemal to the ISD1400 series use separate ground buses to minimize noise These pins should be tied together as close as possible to the device RECORD REC The REC input is an active LOW record signal
4. 1896 6 1896 6 1936 2 1973 8 1973 8 1910 6 1580 2 1379 0 1608 6 1777 0 1971 8 1973 8 1973 8 1929 4 NOTE Die dimensions and pin pad positions may be subject to change Please contact ISD Sales Offices or Representatives to verify current or future specifications 20 Voice Solutions in Silicon 15D1400 Series ORDERING INFORMATION Product Number Descriptor Key ISDI4 X Nac ISD1400 Series Special Temperature Field Duration Blank Commercial Packaged 0 C to 70 C 16 16 Seconds or Commercial Die 0 C to 50 C 0 20 Seconds E Industrial 40 C to 85 C Package Type Po 28 Lead 0 600 Inch Plastic Dual Inline Package PDIP S sm 28 Lead 0 300 Inch Plastic Small Outline Package SOIC X Die When ordering ISD1400 Series devices please refer to the following valid part numbers Part Number Part Number ISD1416P ISD1 420P ISD1416PI ISD1420PI ISD14165 ISD1 4205 ISD141 6Sl ISD1 420S ISD1416X ISD1420X For the latest product information access ISD s worldwide website at http www isd com ISD 21
5. The device records whenever REC is LOW This signal must remain LOW for the duration of the record ing REC takes precedence over either playback PLAYE or PLAYL signal If REC is pulled LOW during a playback cycle the playback immediately ceases and recording begins A record cycle is completed when REC is pulled HIGH or the memory space is filled An end of message marker EOM is intemally re corded enabling a subsequent playback cycle to terminate appropriately The device automati cally powers down to standby mode when REC goes HIGH PLAYBACK EDGE ACTIVATED PLAYE When a LOW going transition is detected on this input signal a playback cycle begins Playback continues until an EOM is encountered or the end of the memory space is reached Upon comple tion of the playback cycle the device automati cally powers down into standby mode Taking PLAYE HIGH during a playback cycle will not termi nate the curent cycle PLAYBACK LEVEL ACTIVATED PLAYL When this input signal transitions from HIGH to LOW a playback cycle is initiated Playback con tinues until PLAYL is pulled HIGH an EOM marker is detected or the end of the memory space is reached The device automatically powers down to standby mode upon completion of the play back cycle NOTE in playback if either PLAYE or PLAYL is held LOW during EOM or OVF the device will still enter standby and the internal oscillator and timing generator will sto
6. To prevent this occurrence place a capacitor approx 0 001 uF between the control pin REC and Voc This pulls the control pin voltage up with Vec as it rises Once the voltage is HIGH the pull up device will keep the pin HIGH until intentionally pulled LOW preventing the false EOM marker Since this anomaly depends on factors such as The capacitance of the users printed circuit board not all circuit designs will exhibit the spuri ous marker However it is recommended that the capacitor is included for design reliability A more detailed explanation and resolution of this occur rence is described in Application Information Voice Solutions in Silicon 15D1400 Series ISD1400 SERIES PHYSICAL DIMENSIONS Figure 5 28 Lead 0 600 Inch Plastic Dual Inline Package PDIP P Table 12 Plastic Dual Inline Package PDIP P Dimensions INCHES MILLIMETERS Min Nom Max Min Nom Max A 1 445 1 450 1 455 36 70 36 83 36 96 Y A 0 15 0 15 o O NOTE Lead coplanarity to be within 0 005 inches ISD 17 ISD1400 Series Figure 6 28 Lead 0 300 Inch Plastic Small Outline Integrated Circuit SOIC S 20 19 18 17 16 15 10 11 12 13 14 la Table 13 Plastic Small Outline Integrated Circuit SOIC S Dimensions INCHES MILLIMETERS Min Nom Max Min Nom Max H 0 024 0 032 0 040 0 61 0 81 1 02 NOTE Lead coplanarity to be within 0 004 inches 18 Voice So
7. an external clock can be utilized see Pin Descriptions 6 Filter specification applies to the antialiasing filter and to the smoothing filter Typical Parameter Variation with Voltage and Temperature Die ISD 13 ISD1400 Series TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE DIE Chart 5 Record Mode Operating Current Chart 7 Standby Current Isp lcc es 0 35 15 2 m 0 30 Ed E f 3 t 50 25 10 5 5 8 8 e 4 gt 0 20 P E 2 1 E 90 154 T x o 5 a o o 0 10 Y 0 25 50 0 25 50 Temperature C Temperature C m e 65Vols 5 5Volts 4 5 Volts SS SNe T Chart 8 Oscillator Stability Chart 6 Total Harmonic Distortion 0 5 2 57 A 04 S sL z S 9 t E 1 04 y 0 3 e a O 054 502 ol a E s A 1 0 EN 0 1 5 0 25 50 0 25 50 Temperature C Temperature C m 6 5Vols 5 5 Volts e 4 5 Volts 6 5Volts 5 5 Volts e 4 5 Volts 14 Voice Solutions in Silicon O RECORD ISD1400 Series Figure 4 Application Example FUNCTIONAL DESCRIPTION EXAMPLE The following example operating sequence dem onstrates the functionality of the ISD1400 series devices 1 ISD Record a message filling the address space Pulling the REC signal LOW initiates a record cycle from the beginning of the message space If REC is held LOW the recording cont
8. time For instance an ISD1420 operating within specifica tion will be observed to always have a minimum of 20 seconds of recording time The sampling fre quency is then maintained to a variation of 2 25 percent over the commercial temperature and operating voltage ranges while still maintaining the minimum specified recording duration This will result in some devices having a few percent more than nominal recording time The internal clock has a 5 percent tolerance over the industrial temperature and voltage range A regulated power supply is recommend ed for industrial temperature parts If greater pre cision is required the device can be clocked through the XCLK pin as follows Table 2 External Clock Sample Rates Part Number Sample Rate Required Clock 1024 KHz ISD1416 819 2 KHz ISD1420 15D1400 Series These recommended clock rates should not be varied because the antialiasing and smoothing filters are fixed and aliasing problems can occur if the sample rate differs from the one recommended The duty cycle on the input clock is not critical as the clock is immediately divided by two intemally If the XCLK is not used this input should be connected to ground SPEAKER OUTPUTS SP SP The SP and SP pins provide direct drive for loud speakers with impedances as low as 16 Q A sin gle output may be used but for direct drive loudspeakers the two opposite polarity outputs pro vide
9. 0 Series 16 on REC initiates a new record operation from the beginning of the start address or at a selected location regardless of any current operation in progress Record a message partially filling the ad dress space A record operation need not fill the entire message space Releasing the REC signal HIGH before filling the message space causes the recording to stop and an EOM to be placed The device powers down autornatically Play back a message partially filling the adaress space Pulling the PLAYE or PLAYL signal LOW initiates a playback cycle which is then completed when the EOM marker is encountered Playback ceases and the device powers down RECLED operation The RECLED output pin provides an active LOW signal which can be used to drive an LED as a record in progress indicator It returns to a HIGH state when the REC pin is released HIGH or when the recording is completed due to the message space being filled This pin also pulses LOW to indicate an EOM at the end of a message being played APPLICATIONS NOTE Some users may experience an unexpected re cording taking place when their circuit is powered up or the batteries are changed and Vec rises faster than REC This undesired recording prevents playback of the previously recorded message A spurious End Of Message EOM marker appears at the very beginning of the memory preventing ac cess to the original message and nothing is played
10. High Voltage ENDS lou 1 6 mA lec Vcc Current Operating o 30 mA Vec 55V Rey e lcg Vec Current Standby maz 10 uA 9 4 li Input Leakage Current D dE HA lea Input Current HIGH w Pull 130 A Force Vec 9 Down Reyt Output Load Impedance w Q Speaker Load RMC Preamp In Input Resistance TEE 17 KQ Pins 17 18 RANA IN ANA IN Input Resistance pas 3 5 KQ ApRE1 Preamp Gain 1 26 aB AGC 0 0V Apreo Preamp Gain 2 45 15 aB AGC 25V ISD 7 15D1400 Series Symbol AARP Race IPREH IPREL Table 6 DC Parameters Packaged Parts Parameters ANA IN to SP Gain AGC Output Resistance Preamp Out Source Preamp In Sink Typical values T4 25 C and 5 0 V Min Typ Max Units Conditions mA Voy 1 0V 0 5 mA Voy 20V 2 All Min Max limits are guaranteed by ISD via electrical testing or characterization Not all specifications are 100 percent tested 3 Voca and Vecp connected together 4 REC PLAYL and PLAYE must be at Veco 5 XCLK pin Table 7 AC Parameters Packaged Parts Symbol Characteristic Min Typ Max Units Conditions Fs Sampling Frequency ISD1416 8 KHz 5 ISD1420 6 4 KHz 5 For Filter Pass Band ISD1416 3 3 KHz 3 dB Roll Off Point 9 9 ISD1420 2 6 KHz 3 dB Roll Off Point 9 TREC Record Duration ISD1416 16 sec ISD1420 20 sec Tops Playback Duration ISD1416 16 sec ISD1420 20 sec Tigpo RECLED OFF Delay ISD1416 30 38 9 95
11. MING DIAGRAMS Figure 2 Record REC RECLED Tser A0 A7 MIC ANA IN Figure 3 Playback SP RECLED 1 REC must be HIGH for the entire duration of a playback cycle 2 RECLED functions as an EOM during playback 6 Voice Solutions in Silicon 15D1400 Series Table 4 Absolute Maximum Ratings Table 5 Operating Conditions Packaged Parts Packaged Parts Condition Value Condition Value 150 C Commercial operating 0 C to 70 C temperature range Junction temperature Storage temperature range 65 C to 150 C Industrial operating 40 C to 85 C Voltage applied to any pin Vss 0 3 V to temperature Voc 0 3 V Supply voltage V 4 5 Vto 5 5 V Voltage applied to any pin Vas 1 0 V to Bey ge Veo Input current limited to 20 mA Vcc 1 0 VJ Ground voltage WAS OV Lead temperature soldering 300 C 10 seconds 1 Case temperature DET 0 3V1 2 Voc Voca Veco CC SS i o 70V 3 Vss Vssa Vssp 1 Stresses above those listed may cause permanent damage to the device Exposure to the absolute maximum ratings may affect device reliability Functional operation is not implied at these conditions Table 6 DC Parameters Packaged Parts Symbol Parameters Min Typ Max Units Conditions Vi Input Low Voltage 3723 0 8 V Vin Input High Voltage ESA V V V VoL Output Low Voltage ae 0 4 lo 4 0 mA Vou Output
12. O O ISD1400 SERIES O O ious ChipCorder TECHNOLOGY BY ISD ISD1400 Series Single Chip Voice Record Playback Devices 16 and 20 Second Durations GENERAL DESCRIPTION Information Storage Devices ISD1400 ChipCorder series provides high quality single chip record playback solutions to short duration messaging applications The CMOS devices include an on chip oscillator microphone preamplifier auto matic gain control antialiasing filter smoothing fil ter and speaker amplifier A minimum record playback subsystem can be configured with a mi crophone a speaker several passives two push buttons and a power source Recordings are stored in on chip nonvolatile memory cells providing zero power message storage This unique single chip solution is made possible through ISD s patented multilevel storage technology Voice and audio signals are stored directly into memory in their natural form providing high quality solid state voice reproduction Figure ISD1400 Series Block Diagram XCLK O Internal Clock 5 Pole Active ANAIN O Antialiasing Filter ANA OUT O p 9 8 MIC O A MIC REF O AGC O Sampling Clock ChipCorder TECHNOLOGY BY ISD Analog Transceivers 128K Cell Nonvolatile O SP Multilevel Storage Array O SP Address Buffers Veca Vssa Vsso Veco AO Al A2 A3 A4 A5 AS A7 ISD APRIL 1998 REC PLAYE PLAYL RECLED 15D1400 Series FEATURES Easy to use singl
13. an improvement in output power of up to four times over a single ended connection Fur thermore when SP and SP are used a speaker coupling capacitor is not required A single end ed connection will require an AC coupling ca pacitor between the SP pin and the speaker The speaker outputs are in a high impedance state during a record cycle and held at Vega during pow er down ADDRESS INPUTS A0 A7 The Address Inputs have two functions depending upon the level of the two Most Significant Bits MSB of the address If either of the two MSBs is LOW the inputs are all interpreted as address bits and are used as the start address for the current record or playback Cycle The adaress pins are inputs only and do not output internal address information as the opera tion progresses Address inputs are latched by the falling edge of PLAYE PLAYL or REC OPERATIONAL MODES The ISD1400 series is designed with several built in operational modes provided to allow maximum functionality with a minimum of additional corn ponents described in detail below The opera tional modes use the address pins on the ISD1 400 devices but are mapped outside the valid ad dress range When the two Most Significant Bits MSBs are HIGH A6 and A7 the remaining ad dress signals are interpreted as mode bits and not as address bits Therefore operational modes and direct addressing are not compatible and cannot be used simultaneously There
14. are two important considerations for using operational modes First all operations begin ini tially at address O which is the beginning of the ISD1400 address space Later operations can be gin at other address locations depending on the operational mode s chosen In addition the ad dress pointer is reset to O when 1he device is changed from record to playback but not from playback to record when AA is HIGH in Operation al Mode Second an Operational Mode is executed when any of the control inputs PLAYE PLAYL or REC go LOW and the two MSBs are HIGH This Operational Mode remains in effect until tne next LOW going control input signal at which point the current ad dress mode levels are sampled and executed NOTE The two MSBs are on pins 9 and 10 for each ISD1400 series device Voice Solutions in Silicon OPERATIONAL MODES DESCRIPTION The Operational Modes can be used in conjunc tion with a microcontroller or they can be hara wired to provide the desired system operation A0 MESSAGE CUEING Message Cueing allows the user to skip through messages without knowing the actual physical addresses of each message Each control input LOW pulse causes the internal address pointer to skip to the next message This mode should be used for playback only and is typically used with the A4 Operational Mode A1 DELETE EOM MARKERS The A1 Operational Mode allows sequentially re corded messages to be combined
15. ation ISD1416 16 Sec ISD1 420 20 sec TrLay Playback Duration ISD1416 16 sec 5 ISD1420 20 sec 5 Tigpo RECLED OFF Delay ISD1416 30 38 9 95 msec ISD1420 40 48 6 110 msec Teer Address Setup Time 300 me TRPUD Record Power Up Delay ISD1416 26 msec ISD1420 32 msec TRPDD Record Power Down ISD1416 26 msec Delay ISD1420 32 msec Tppyp Play Power Up Delay ISD1416 26 msec ISD1420 32 msec Voice Solutions in Silicon Table 11 AC Parameters Die Symbol Characteristic Min Typ Max m Play Power Down Delay ISD1416 S ISD1420 8 1 Teom EOM Pulse Width ISD1416 12 5 ISD1420 15 625 THD Total Harmonic Distortion Pour Speaker Output Power 12 2 NM Vout Voltage Across Speaker Pins Vint MIC Input Voltage ENENNE d Vino ANA IN Input Voltage 50 1 Typical values T4 25 C and 5 0 V ISD1400 Series Units Conditions msec msec msec 1 KHz Raq 160 Reg 6000 Peak to Peak 4 mV Peak to Peak 2 All Min Max limits are guaranteed by ISD via electrical testing or characterization Not all specifications are 100 percent tested amp With 5 1 KQ series resistor at ANA IN A 5 Sampling frequency and playback duration will vary as much as 2 25 percent over the commercial temperature and voltage ranges All devices will meet the maximum sampling frequency and minimum playback duration Low frequency cutoff depends upon value of external capacitors see Pin Descriptions parameters For greater stability
16. d eta ete AA 4 l4 Chart 6 Total Harmonic Distortion iiie 14 Chan 7 Standby Current lp A O ter e be a auae ta ea s pe Fs l4 Chart 8 Oscill amp tor Stabbiliby zz t aram Sex eed 8 rie dede pete te ees 14 Table 1 Device Playback Record Durations iin 1 Table 2 External Clock Sample Rates ren 3 Table 3 Operational Modes lable vin 4 eoa vu D SEU AED CA ede OUS a 5 Table 4 Absolute Maximum Ratings Packaged Pars 0000o o ooo 7 Table 5 Operating Conditions Packaged Parts nn 7 Table 6 DC Parameters Packaged Parts reto ee me eg Rae ademas 7 Table 7 AC Parameters Packaged Parts iiis 8 Table 8 Absolute Maximum Ratings Die eee 11 Table 9 Operating Conditions Die iiis 11 Table 10 DC Parameters De visado a TC UR eb CO Ce e COR 11 Table 11 AG Parameters Die ate tete dre aro datado e ie eats 12 Table 12 Plastic Dual Inline Package PDIP P Dimensions o o o oommmmco 17 Table 13 Plastic Small Outline Integrated Circuit SOIC S Dimensi0NS 0 18 Table 14 ISD1400 Series PIN PAD Designations with Respect to Die Center um 20 Voice Solutions in Silicon DETAILED DESCRIPTION SPEECH SOUND QUALITY The ISD1400 series includes devices offered at 6 4 and 8 0 KHz sampling frequencies allowing the user a choice of speech quality options The speech samples are stored directly into on chip nonvolatile memory without the digitization and compression as
17. d sounds to be recorded with minimal distortion The attack time is determined by the time constant of a 5 KQ internal resistance and an external capacitor C on the schematic in Figure 4 connected from the AGC pin to Vega analog ground The release time is determined by the time constant of an extemal resistor R5 and an extemal capacitor C con nected in parallel between the AGC Pin and Vega analog ground Nominal values of 470 KO and 4 7 uF give satisfactory results in most cases ISD 15D1400 Series ANALOG OUTPUT ANA OUT This pin provides the preamplifier output to the us er The voltage gain of the preamplifier is deter mined by the voltage level at the AGC pin ANALOG INPUT ANA IN The ANA IN pin transfers the input signal to the chip for recording For microphone inputs the ANA OUT pin should be connected via an external capaci tor to the ANA IN pin This capacitor value togeth er with the 3 0 KQ input impedance of ANA IN is selected to give additional cutoff at the low fre quency end of the voice passband If the desired input is derived from a source other than a micro phone the signal can be fed capacitively cou pled into the ANA IN pin directly EXTERNAL CLOCK INPUT XCLK The external clock input for the ISD1400 devices has an internal pull down device The ISD1400 is configured at the factory with an intemal sam pling clock frequency that guarantees its mini mum nominal record playback
18. e chip voice record playback solution High quality natural voice audio reproduction Push button interface Playback can be edge or level activated Single chip durations of 16 and 20 seconds Automatic power down mode Enters standby mode immediately fol lowing a record or playback cycle Standby current 0 5 uA typical Zero power message storage Eliminates battery backup circuits Fully addressable to handle multiple messages 100 year message retention typical 100 000 record cycles typical On chip clock source No programmer or development system needed Single 5 volt power supply Available in die form DIP and SOIC packaging Industrial temperature 40 C to 85 C versions available Table ISD1400 Series Summary Minimum Duration Seconds Part Number ISD1416 ISD1420 Input Sample Rate Typical Filter Pass KHz Band KHz Voice Solutions in Silicon Table of Contents ISD1400 Series single Chip Voice Record Playback Devices 16 and 20 Second Durations DETAILED DESCRIPTION eta t re t ben ia bct em nS eof dte 1 Sspeseh sound QUA Via tmc a tede Saee id s V cas av Ab es Raha n 1 DUGON iia Destra aident e t al S Ret NR LAO a ee ea de ated dele NA A d a a 1 EEPROM SOLO GG oy vx wean s ad tacta dd A T ote DR ne bo LD QUE Gd EEO PR ee aD 1 Basic OPIO tai AA UP NER AA qp A P AAA deed 1 Automatic Power Down Mode saaana e e e e e e en 1 AGGressing
19. eptional ata eM aD eed p datis desees nues 1 PINIDESCRIPTON cito A a toa Mud opes Sas 2 Voliege Inputs Vera Vero IN bd ento tui toda 2 Giound INPUTS Ween Vesp Cue LEE ES ie vocat pte ON gad 2 RECO A i ATE GAEL COLOR zb Ede C D db e odd duod V PRACRND dedo 9 48 2 Playback Edge Activated PLAYE sisse eee 2 Playback Level Activated PLAYER Sad A IER CA KOE E Cat 2 kecod TED Output RELE ada aid xl nae qo deo Ne oda 3 Microphone Input MIC oo hh hh n 3 Microphone Reference MIC REF aaan aaa hh n 3 Automatic Gan Control AGE s atri se Lee ce e toc ace e De d a te E t ae at n e Ln d aca 3 Analog Output ANA OUT uan dated i Rer ot de DE Rn REN e Mee dado bab dod OD dedo d c9 a 3 Analog Input ANA IN us suede bx A UR eV We AAA aps m EU qo ERR p n 3 External Clock Input XGLK aceite a e a ae e ER a DRE Y De A ICD a De ERR Ce a 3 speaker Dutputs SPA SPE o dut al ak och ed dad e QE d 4 Address Inpuls AO 1 bacis et dos eas We ett tros i ea eR UR Re Ai T OI OE Woke dod 4 OPERATIONAL MODES zoe tende x dere ERR ede Nep Saad Se eoe eee E ed A 4 OPERATIONAL MODES DESCRIPTION ise eee e e nn 5 AQ Message Cuang e o ats eb eripe Ae epe ORE dee de dn ck dec edet d Ms 5 AT Delete EOM MGIKSIS soon DARA ERR oa Las pa Yao 5 A2 Unm sed s xS E bU PAS a ML Sce s e a equ s 5 A3 Message LOOPING csse a REX AC VC RO AI E e AH 5 A4 Corsecultive Adcliessinig aio ace ee ero ce e De CURE ERR IT o RO c A 5 A5
20. into a single message with only one EOM marker set at the end of the final message When this operational mode is configured messages recorded sequentially are played back as one continuous message 15D1400 Series A3 MESSAGE LOOPING The A3 Operational Mode allows for the automat ic continuously repeated playback of the mes sage located at the beginning of the address space A message can completely fill the ISD1400 de vice and will loop from beginning to end Pulsing PLAYE will start tne playback and pulsing PLAYL will end the playback M CONSECUTIVE ADDRESSING During normal operations the address pointer will reset when a message is played through to an EOM marker The A4 Operational Mode inhibits the adaress pointer reset allowing messages to be re corded or played back consecultively When the device is in a static state i e not recording or playing back momentarily taking this pin LOW will reset the address counter to zero A5 UNUSED A2 UNUSED Table 3 Operational Modes Table pisci Function Typical Use e AO Message cueing Fast forward through messages A4 Al Delete EOM markers Position EOM marker at the end of the last message A3 A4 A2 Unused A3 Looping Continuous playback from Address O Al A4 Consecutive addressing Record play multiple consecutive messages AO Al AS Unused 1 Additional operational modes can be used simultaneously with the given mode ISD 15D1400 Series TI
21. inues until the message space has been filled Once the message space is filed recording ceases The device will automatically power down after REC is pulled HIGH Edge activated playback Pulling the PLAYE signal LOW initiates a playback cycle from the beginning of the message space or at a selected location The rising edge of PLAYE has no effect on operation If a recording has filled the message space the entire message is played When the device reaches the EOM marker it automatically powers down A Vccp Veca Vssp Vesa SP S ANA ISD1400 ANA O ELECTRET MICROPHONE subsequent falling edge on PLAYE initiates a new play cycle from the start address Level activated playback Pulling the PLAYL signal LOW initiates a playback cycle from the beginning of the message space or a selected location If recording has filled the message space The entire message is played When the device reaches the EOM marker it autornatically powers down A subsequent falling edge on PLAYL initiates a new play cycle from the starting address Level activated playback truncated If PLAYL is pulled HIGH any time during the playback cycle the device stops playing and enters the power down mode A subsequent falling edge on PLAYL initiates a new play cycle from the start address Record interrupting playback The REC signal takes precedence over other operations Any LOW going transition 15 ISD140
22. lutions in Silicon 1501400 Series Figure 7 ISD1400 Series Bonding Physical Layout A3 Al XCLK A2 AO Veco REC RECLED ISD1400X Adu m PLAYE I Die Dimensions A5 m W DDAVD X 172 2 1 mils Y 168 5 1 mils Il Die Thickness 17 5 1 mils SADO Ill Pad Opening 100 x 112 microns 3 9 x 4 4 mils A ay m ANA OUT AE E ANA IN SP Veca MIC REF 1 The backside of die is internally connected to Vss Ift MUST NOT be connected to any other potential or damage may occur 2 Die thickness is subject to change please contact ISD factory for status ISD 19 1501400 Series Table 14 Pin ISD1400 Series PIN PAD Designations with Respect to Die Center um Pin Name Address O Adaress 1 Address 2 Address 3 Address 4 Adaress 5 Adaress 6 Adaress 7 No Connect Vss Digital Power Supply Vss Analog Power Supply Speaker Output Speaker Output Vcc Analog Power Supply Microphone Input Microphone Reference Automatic Gain Control Analog Input Analog Output Level Activated Playback Edge Activated Playback Record LED Output No Connect optional Record Vec Digital Power Supply X Axis 1332 5 1628 9 1808 9 2014 1 2014 1 2014 1 2014 1 2014 1 2014 1 1894 1 358 1 17 7 411 9 779 5 991 5 1168 7 1977 9 2005 1 1990 7 2013 9 2013 9 2011 9 1580 7 752 3 48 5 Y Axis 1973 8 1973 8 1973 8 1910 2 1722 6 1519 8 1214 6 1399 8 1745 4 1971 8 1971 8
23. msec ISD1420 40 48 6 110 msec Tser Address Setup Time 300 me TRPUD Record Power Up ISD1416 26 msec Delay ISD1420 32 msec TRPDD Record Power Down I5D1416 26 msec Delay ISD1420 32 msec Tppyp Play Power Up Delay ISD1416 26 msec ISD1420 32 msec Voice Solutions in Silicon 15D1400 Series Table 7 AC Parameters Packaged Parts Symbol Characteristic Min Typ Y Max Units Conditions Tpppp Play Power Down ISD1416 Delay ISD1420 Teom EOM Pulse Width ISD1416 ISD1420 THD Pour Vour Vint Vin2 1 Typical values T4 25 C and 5 0 V 2 All Min Max limits are guaranteed by ISD via electrical testing or characterization Not all specifications are 100 percent tested Low frequency cutoff depends upon value of external capacitors see Pin Descriptions With 5 1 KQ series resistor at ANA IN 5 Sampling frequency and playback duration will vary as much as 2 25 percent over the commercial temperature and voltage ranges It may vary as much as 5 percent over the industrial temperature and voltage ranges All devices will meet the maximum sampling frequency and minimum playback duration parameters For greater stability an external clock can be utilized see Pin Descriptions 6 Filter specification applies to the antialiasing filter and to the smoothing filter A ISD 9 15D1400 Series TYPICAL PARAMETER VARIATION WITH VOLTAGE AND TEMPERATURE PACKAGED PARTS
24. p However the rising edge of PLAYE and PLAYL are not debounced and any subsequent falling edge particularly switch bounce present on the input pins will initiate another playback Voice Solutions in Silicon RECORD LED OUTPUT RECLED The output RECLED is LOW during a record cycle It can be used to drive an LED to provide feed back that a record cycle is in progress In addition RECLED pulses LOW momentarily when an EOM is encountered in a playback cycle MICROPHONE INPUT MIC The microphone input transfers its signal to the on chip preamplifier An on chip Automatic Gain Control AGC circuit controls the gain of this preamplifier from 15 to 24 dB An external micro phone should be AC coupled to this pin via a se ries capacitor The capacitor value together with the internal 10 KQ resistance on this pin deter mine the low frequency cutoff for the ISD1400 se nes passband See Application Information for additional information on low frequency cutoff calculations MICROPHONE REFERENCE MIC REF The MIC REF input is the inverting input to the mi crophone preamplifier This provides a noise can celing or common mode rejection input to the device when connected differentially to a micro phone AUTOMATIC GAIN CONTROL AGC The AGC dynamically adjusts the gain of the preamplifier to compensate for the wide range of microphone input levels The AGC allows the full range of sound from whispers to lou
25. sociated with other solutions Di rect analog storage provides a very true natural sounding reproduction of voice music tones and sound effects not available with most solid state digital solutions DURATION To meet end system requirements the ISD1400 series offers single chip solutions at 16 and 20 sec onds EEPROM STORAGE One of the benefits of ISD s ChipCorder technology is the use of on chip nonvolatile memory providing zero power message storage The message is re tained for up to 100 years typically without power In addition the device can be re recorded typi cally over 100 000 times BASIC OPERATION The ISD1400 ChipCorder series devices are con trolled by a single record signal REC and either of two push button control playback signals PLAYE edge activated playback and PLAYL level acti vated playback The ISD1400 parts are config ured for simplicity of design in a single message application Using the address lines will allow mul tiple message applications Device operation is explained on page 15 ISD 15D1400 Series AUTOMATIC POWER DOWN MODE At the end of a playback or record cycle the ISD1400 series devices automatically retum to a low power standby mode consuming typically 0 5 uA During a playback cycle the device pow ers down automatically at the end of the mes sage During a record cycle the device powers down immediately after REC is released HIGH ADDRESSING OPTIONAL
26. urrent HIGH w Pull UE Down Reyt Output Load Impedance RMC Preamp In Input Resistance 4 RANA IN ANA IN Input Resistance Aen Preamp Gain 1 Apreo Preamp Gain 2 AARP ANA IN to SP Gain 20 ISD Table 9 Condition 15D1400 Series Operating Conditions Die Value Commercial operating temperature range Supply voltage Veg Ground voltage Vs l Voc Voca Voco 2 Vss Vssa Vssp Table 10 DC Parameters Die Typ 1 Max 0 C to 50 C 4 5 Vto 6 5V OV Conditions lo 4 0 mA log 1 6 mA Vec 5 5 V 9 Rey 3 4 Force Vec Speaker Load Pins 17 18 AGC 00V AGC 25V 11 ISD1400 Series Symbol Race IPREH IPREL Table 10 DC Parameters Die Parameters AGC Output Resistance Preamp Out Source Preamp In Sink 1 Typical values T4 25 C and 5 0 V 100 percent tested 3 Voca and Vecp connected together Units KQ mA mA Conditions Vout 1 0 V Vout 2 0 V All Min Max limits are guaranteed by ISD via electrical testing or characterization Not all specifications are 12 4 REC PLAYL and PLAYE must be at Veco 5 XCLK pin Table 11 AC Parameters Die Symbol Characteristic Min Typ Max Units Conditions Fs Sampling Frequency ISD1416 8 KHz 5 ISD1 420 6 4 KHz 5 For Filter Pass Band ISD1416 3 3 KHz 3 dB Roll Off Point 9 9 ISD1420 2 6 KHz 3 dB Roll Off Point 9 Trec Record Dur
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ISD 1400 series Single Chip Voice Record/Playback Devices 16 20 Second Durations handbook