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National Semiconductor LMH6645/46/47 2.7V 650 A 55MHz Rail-to-Rail Input Output Amplifiers with Shutdown Option handbook

1. 05 05 15 Vos mV gt 3 5 25 1 5 25 35 20020225 VosVS A Typical Unit 25 C 85 C Vg 10V 10k2 to Vg 2 2 0 2 4 6 8 10 12 Vour V 20020228 www national com Typical Performance Characteristics tT 25 Unless otherwise specified Continued VosVS A Typical Unit Vos mV Vg 10V 1kQto Ve 2 2 0 2 4 6 8 10 12 Vout 20020229 VosVS Vem A Typical Unit 20020230 lg WA 20020226 VosVS Vem A Typical Unit Vos mV 05 0 05 1 15 2 25 3 Vem V 20020231 VosVS A Typical Unit Vos mV 20020232 lg WA 20020219 www national com Lv 9t SV99HINT LMH6645 46 47 Typical Performance Characteristics T 25 C Unless otherwise specified Continued
2. lg VS Vs ls VS 0 50 dis an Vom 0 2V 0 54 0 56 T c _ 0 58 25 E c 0 62 T E 0 64 0 66 40 0 68 0 7 123 4 5 6 7 8 9 1011 12 Vg V Vom V 20020227 20020223 ls mA per channel ls VS LMH6647 0 9 0 9 0 85 85 0 8 0 8 0 7 T 075 0 6 zx S 07 05 o 2 0 65 25 wo 04 06 0 3 055 0 2 0 5 0 1 be Vg 5 0 45 3 0 Vom 02V 0 4 0 1 1 234 5 6 7 8 9 10 11 12 0 15 0 35 0 85 135 185 235 285 Vg V VsHuTDOWN V 20020224 20020221 15 VS Vsuutpown LMH6647 Is VS Vsuutpown LMH6647 0 9 0 9 85 C Ve 5V 0 8 5 08 0 7 0 7 0 6 25 0 6 05 05 T 04 40 C 04 o 2 0 3 03 0 2 0 2 0 1 0 1 0 0 0 1 0 1 05 05 15 25 35 45 55 6 4 2 0 2 4 6 VgHUTDOWN V VsHUTDOWN V 20020220 20020222 www national com 12 Typical Performance Characteristics tT 25 Unless otherwise specified Continued Shutdown Pin and Supply Current vs Shutdown Voltage 1000 100 85 25 40 2 100 z 5 VCC z 8 SHUTDOWN 8 gt PIN CURRENT a 10 4 2 85 C E 40 V 2 5 s 2676 35 25 15 05 05 15 25 35 VsuurbowN V 20020208 Large Signal Step Response Vg 27V Ry 1kQ Vout 1Vpp Ay 1
3. Vout pp FREQUENCY Hz 20020254 20020255 7 www national com LMH6645 46 47 Typical Performance Characteristics Settling Time vs Step Size 250 200 A E 150 z 100 o 50 0 0 1 2 3 4 STEP AMPLITUDE Vpp 20020252 Vout from V vs 5 40 C 10 Vs 10V BEA 1 0 n LL 3 04 x 85 C 25 C 40 C 0 01 01 1 1 10 100 IsouRcE MA 20020237 Output Swing from V vs R tied to Vs 2 10k Vout FROM V mV 20020202 25 C Unless otherwise specified Continued Noise vs Frequency 1000 10 00 CURRENT S 100 1 00 is amp c VOLTAGE 10 0 10 10 100 1k 10k 100k FREQUENCY Hz 20020234 Vour from V5 vs Isink 40 C 10 LYs 10V 85 gt 10 gt gt e jam Ww 5 0 1 85 40 C 0 01 01 4 1 10 100 Isink MA 2002023
4. 0 2 Output pu 40 ns DIV 20020244 Overload Recovery Vg 25V Ay 7 2 OUTPUT 1 V DIV Ry 1kQ Re Rg 2kQ 400 ns DIV 20020246 Small Signal Step Response Vg 5 Ry 1kQ 1 40 mV DIV Vout 02Vpp 20 ns DIV 20020243 Large Signal Step Response 0 2 V DIV 40 ns DIV 20020245 13 www national com Zv 9t SV99HINT LMH6645 46 47 Application Notes Circuit Description The LMH6645 6646 6647 family is based on National Semi conductor s proprietary VIP10 dielectrically isolated bipolar process This device family architecture features the following Complimentary bipolar devices with exceptionally high f 8GHz even under low supply voltage 2 7V and low Collector bias current Rail to Rail input which allows the input common mode voltage to go beyond either rail by about 0 5V typically A class A B turn around stage with improved noise offset and reduced power dissipation compared to simi lar speed devices patent pending Common Emitter push pull output stage capable of 20mA output current at 0 5V from the supply rails while con suming only 700p4A of total supply current per channel This architecture allows output to reach within milli volts of either supply rail at light load
5. 200MVpp 40 55 MHz en Input Referred Voltage Noise f 100kHz 17 f 1kHz 25 nvi in Input Referred Current Noise f 100kHz 0 75 pA dz Cross Talk Rejection f 5MHz Receiver dB LMH6646 only R Rg 5100 Ay 2 Slew Rate Ay 1 Vo 2Vpp Note 8 V us Turn On Time LMH6647 only ns Turn Off Time LMH6647 only ns Shutdown Threshold 15 lt V LMH6647 only Shutdown Pin Input Current pA LMH6647 only Vos Input Offset Voltage 5V Vom 5V 3 3 mV 4 4 TC Vos Input Offset Average Drift Note 12 5 uVv Cc 5 www national com Lv 9t SV99HINT LMH6645 46 47 5V Electrical Characteristics Continued Unless otherwise specified all limits guaranteed for at T 25 C 5V V 5V Vem Vo OV 2kQ and R 1kQ to GND Boldface limits apply at the temperature extremes Symbol Parameter Conditions Min Typ Max Units Note 6 Note 5 Note 6 lg Input Bias Current Vom 4 8V Note 7 10 40 2 2 2 Vom 4 5V Note 7 2 pa 0 65 m nA Rin Common Mode Input MQ Resistance Cin Common Mode Input pF Capacitance CMVR Input Common Mode Voltage CMRR gt 50dB Range V OMAR Ratio 66 104 Avot Large Signal Voltage Gain Vo 2V to 2V dB Vo Output Swing 1kQ V High 10kQ Output Swing 1kQ V Isc Output Short Circuit Current Sourcing to V Vip 200mV Note 10 gue mA Sinking to V Vip 200mV Note 10 lour
6. LMH 6643 M national Semiconductor LMH6645 46 47 General Description The LMH6645 single and LMH6646 dual rail to rail input and output voltage feedback amplifiers offer high speed 55MHz and low voltage operation 2 7V in addition to micro power shutdown capability LMH6647 single Input common mode voltage range exceeds either supply by 0 3V enhancing ease of use in multitude of applications where previously only inferior devices could be used Output voltage range extends to within 20mV of either supply rails allowing wide dynamic range especially in low voltage appli cations Even with low supply current of 650uA amplifier output current capability is kept at a respectable 20mA for driving heavier loads Important device parameters such as BW Slew Rate and output current are kept relatively inde pendent of the operating supply voltage by a combination of process enhancements and design architecture In portable applications the LMH6647 provides shutdown capability while keeping the turn off current to less than Both turn on and turn off characteristics are well be haved with minimal output fluctuations during transitions This allows the part to be used in power saving mode as well as multiplexing applications Miniature packages SOT23 MSOP 8 and SO 8 are further means to ease the adoption of these low power high speed devices in applica tions where board area is at a premium 2 7V
7. LMH6646MM 8 Pin MSOP CLC730123 LMH6647MA 8 Pin SOIC CLC730027 LMH6647MF SOT23 6 CLC730116 These free evaluation boards are shipped when a device sample request is placed with National Semiconductor LMH6647 Evaluation For normal operation tie the SD pin to V www national com Physical Dimensions inches millimeters unless otherwise noted 063 4 003 1 620 071 075 1 91 PKG SYMM Y 102 2 59 LII t ie ego MN p EM 0315 CHE 0 9531 LAND PATTERN RECOMMENDATION R 004 MIN TYP 0 1 008 MIN TYP 10 27 GAGE PLANE 040 0 15218 928 LLL 0 00 to 11 c T 01702 0025 002 006 g 432 0 0637 0 05 0 157 025 PLANE 0 8 008 to 219 c 49 BO ME 0 635 014 022 0 36 0 55 CONTROLLING DIMENSION IS INCH VALUES IN ARE MILLIMETERS MFOSA Rev 5 Pin SOT23 NS Package Number MF05A PKG SYMM 1152 003 2 9250 07 7 102 2 591 0631 003 1 650 071 039 TYP 10 99 Lt 038 TYP 027 dd 0 95 PIN 1 IDENT 10 69 T 038 048 0 97 1 221 0025 01701 0020 0 43229 053 T 040 021 vell 002 006 10 0 151 025 008 10 210 lt e LAND PATTERN RECOMMENDATION R 004 MIN TYP 0 4 R 004 MIN TYP 0 1 0015 00602 00
8. Media NSC Drawing 5 Pin SOT 23 LMH6645MF A68A 1k Units Tape and Reel MF05A LMH6645MFX 3k Units Tape and Reel 6 Pin SOT 23 LMH6647MF A69A 1k Units Tape and Reel MF06A LMH6647MFX 3k Units Tape and Reel SOIC 8 LMH6645MA 95 Units Rails 2 5k Units Reel LMH6646MA 95 Units Rails LMH6646MAX 2 5k Units Tape and Reel LMH6647MA LMH6647MA 95 Units Rails LMH6647MAX 2 5k Units Tape and Reel MSOP 8 LMH6646MM A70A 1k Units Tape and Reel MUA08A www national com 2 Absolute Maximum Ratings note 1 If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications ESD Tolerance Human Body Machine Model Vin Differential Output Short Circuit Duration Supply Voltage V V7 Voltage at Input Output pins Storage Temperature Range Junction Temperature Note 4 2KV Note 2 200V Note 9 t2 5V Note 3 11 12 6V V 0 8V V 0 8V 65 C to 150 C 150 2 V Electrical Characteristics Unless otherwise specified all limits guaranteed for at T 25 C V 2 7V V OV Vom Vo V 2 and R 2kQ and RL 1kQ to V 2 Boldface limits apply at the temperature extremes Soldering Information Infrared or Convection 20 sec 235 C Wave Soldering 10 sec 260 C Operating Ratings Note 1 Supply Voltage V V5 2 5V to 12V Junction Temperature Range Note 4 40 C to 85 C Package Thermal Resi
9. Output Current Vout 0 5V from rails mA PSRR Power Supply Rejection Ratio Vt 5V to 6V or V 5V to 6V dB ls Supply Current per channel Normal Operation uA Shutdown Mode LMH6647 only Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur Operating Ratings indicate conditions for which the device is intended to be functional but specific performance is not guaranteed For guaranteed specifications and the test conditions see the Electrical Characteristics Note 2 Human body model 1 5KQ in series with 100pF Note 3 Applies to both single supply and split supply operation Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150 C Note 4 The maximum power dissipation is a function of Tmax and Ta The maximum allowable power dissipation at any ambient temperature is Tymax Ta JA All numbers apply for packages soldered directly onto a PC board Note 5 Typical values represent the most likely parametric norm Note 6 All limits are guaranteed by testing or statistical analysis Note 7 Positive current corresponds to current flowing into the device Note 8 Slew rate is the average of the rising and falling slew rates Note 9 Machine Model 00 in series with 200pF Note 10 Short circuit test is a momentary test See Note 11 Note 11 Output short circuit duration is in
10. Tel 81 3 5639 7560 Tel 65 2544466 Fax 81 3 5639 7507 Fax 65 2504466 Email ap support nsc com National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications uondo UMOPINYS sJaip duiy 1ndino pue jreg or ied ZHINGS vrloso AZ Zp 9v GE99HIWT1
11. save power and reduce its supply current to less than 50pA guaranteed by applying a voltage to the SD pin The SD pin is active high and needs to be tied to V for normal operation This input is low current lt 20 4pF equivalent capacitance and a resistor to V lt 20kQ will result in normal operation Shutdown is guaranteed when SD pin is 0 4V or less from V at any operating supply voltage and temperature In the shutdown mode essentially all internal device biasing is turned off in order to minimize supply current flow and the output goes into Hi Z high impedance mode Complete device Turn on and Turn off times vary considerably relative to the output loading conditions output voltage and input impedance but is generally limited to less than 1us see tables for actual data www national com Application Notes Continued During shutdown the input stage has an equivalent circuit as shown below in Figure 2 R S 200 4000 INVERTING INPUT NON INVERTING INPUT 20020256 FIGURE 2 LMH6647 Equivalent Input in Shutdown Mode As can be seen above in shutdown there may be current flow through the internal diodes shown caused by input potential if present This current may flow through the exter nal feedback resistor and result in an apparent output signal In most shutdown applications the presence of this output is inconsequential However if the output is forced by another device such as in a mu
12. 0 31010 0 53 0 12 09 69 0 002 0 006 TE 0 034 0 0373 SEATING PLANE 0 06 0 15 o 56 0953 x 0 002 0 05 8 0 007 0 002 0 18 0 05 TYR MUAOBA REV B 8Pin MSOP NS Package Number MUAO8A www national com Notes LIFE SUPPORT POLICY NATIONAL S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are intended for surgical implant into the body or b support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user National Semiconductor National Semiconductor Corporation Europe Americas Fax 49 0 180 530 85 86 Email support nsc com Email europe support nsc com Deutsch Tel 49 0 69 9508 6208 English Tel 44 0 870 24 0 2171 www national com Frangais Tel 33 0 1 41 91 8790 2 A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness National Semiconductor National Semiconductor Asia Pacific Customer Japan Ltd Response Group
13. 10 0 152 0 98 Lm qu GAGE PLANE 0 8 014 022_ 10 36 0 551 CONTROLLING DIMENSION IS INCH VALUES IN ARE MILLIMETERS 6 Pin SOT23 NS Package Number MF06A MFO6A Rev A 17 www national com Lv 9t SV99HINT LMH6645 46 47 Physical Dimensions inches millimeters unless otherwise noted Continued 0 189 0 197 4 800 5 004 8 7 8 5 0 228 0 244 5 791 6 198 0 010 max 0 254 LEADNO 1 C 2 3 4 E IDENT 0 150 0 157 3 810 3 988 0 053 0 069 0 010 0 020 455 175 0 254 0 508 as mikt 0 004 0 010 ALL LEADS 0 102 0 254 VERSER Y Boe SEATING A A NL 0 102 0 008 0 010 i 0 014 0 020 ALL LEAD TIPS A pon Tas 0 203 0 254 1 270 7 0 356 0 508 TYP ALL LEADS TE ALL Line TYP omer lt Nen 8 Pin SOIC NS Package Number M08A 0 118 0 004 8 4 550 1 8 5 1 nomm tuu ft 1 1 1 1 0 189 0 193 0 004 4 8 4 9 0 1 0 040 1 02 owe e PIN 1 IDENT ct H NOTE 2 ol 0 016 0 0256 1 0 41 ess 0 0256 LAND PATTERN RECOMMENDATION 0 65 0 043 _ 1 09 ___ Y EHE B c o ooz o os s Y QUO M S is SITIODOE F
14. 650pA 55MHz Rail to Rail Input and Output Amplifiers with Shutdown Option February 2002 Features Vg 2 7V Ta 25 1kQ to V 2 Ay 1 Typical values unless specified m 3dB BW 55MHz Supply voltage range 2 5V to 12V Slew rate 22V us Supply current 650yA channel Output short circuit current 42mA 20 Input common mode voltage Output voltage swing 0 3V beyond rails L L L m Linear output current L 20 from rails Input voltage noise 17nV JHz Input current noise 0 75pA JHz Applications m Active filters m High speed portable devices m Multiplexing applications LMH6647 m Current sense buffer m High speed transducer amp Connection Diagrams SOT23 5 LMH6645 20020259 Top View SOT23 6 LMH6647 Top View SOIC 8 LMH6645 v N C N C IN v 550 IN OUTPUT 4 AN v N C 20020260 20020261 Top View 2002 National Semiconductor Corporation DS200202 www national com uondo UMOPINYS YUM sJaip duiy 1ndino pue jreg or ied ZHINGS 11089 AZ Zr 9v GP99HIWT1 LMH6645 46 47 Connection Diagrams continued SOIC 8 LMH6647 LMH6646 N C IN OUTPUT N C 20020262 Top View Top View Ordering Information SOIC 8 and MSOP 8 INB 20020263 LMH6646MMX 3 5k Units Tape and Reel Package Part Number Package Marking Transport
15. 8 Output Swing from V vs tied to Vs 2 10k Vout FROM V mV 20020206 www national com 8 Typical Performance Characteristics tT 25 Unless otherwise specified Continued Output Swing from V vs tied to V lt 2 Output Swing from V vs R tied to V 2 10k 10k T 25 C Ay 1 3 1k S E z z T 10V T n HE m 100 SV gt 27V 10 0 500 1k 1 5k 2k 2 5k 0 500 1k 1 5k 2k 2 5k 9 9 20020204 20020203 Output Swing from V vs tied to V lt 2 Output Swing from V vs R tied to V 2 10k 85 Ay 1 S t E 1k gt gt gt 5 10 5 5V o 100 X gt 1 27V 00 500 1k 1 5k 2k 25 9 20020207 20020205 Load Tolerance and Setting Time vs Closed Loop Gain Zour
16. VS Frequency 10k 500 42 5V 100 Ay 1 nk ce Sg 10 5 100 1 0 o 10 amp 0 1 1 0 02 5 10k 100k 1M 10M 200M CLOSED LOOP GAIN FREQUENCY Hz 20020201 20020216 9 www national com Zv 9t SV99HINT LMH6645 46 47 Typical Performance Characteristics 110 100 PSRR vs Frequency PSRR Vg 2 5V Re 10k2 Rg 1kQ PSRR dB 100 1k 10k 100k 1M FREQUENCY Hz 10M 20020247 Crosstalk Rejection vs Frequency Output to Output LMH6646 CT rej dB 10k FREQUENCY Hz 100k 1M VosVS Vs A Typical Unit 40 10 20020257 25 Vog mV 85 C 1 Vom 05V 23 4 5 6 7 8 9 10 11 12 Vg 20020218 25 C Unless otherwise specified Continued CMRR dB RELATIVE FREQUENCY Vos mV 90 80 70 60 50 40 30 20 10 0 2 40 C CMRR vs Frequency Vg 5V 1k 10k 100k 1M 10M FREQUENCY Hz 20020251 Vos Distribution N 19k UNITS 0 46mV
17. e output is well behaved and there are no spikes or glitches due to the switching Switch ing times are approximately around 500ns based on the time when the output is considered valid Printed Circuit Board Layout Component Values Selec tion and Evaluation Boards Generally a good high frequency layout will keep power supply and ground traces away from the inverting input and output pins Parasitic capacitances on these nodes to ground will cause frequency response peaking and possible circuit oscillations see Application Note OA 15 for more information Another important parameter in working with high speed high performance amplifiers is the component values selection Choosing large valued external resistors will ef fect the closed loop behavior of the stage because of the interaction of these resistors with parasitic capacitances These capacitors could be inherent to the device or a by product of the board layout and component placement Either way keeping the resistor values lower will diminish this interaction On the other hand choosing very low value resistors could load down nodes and will contribute to higher overall power dissipation National Semiconductor suggests the following evaluation boards as a guide for high frequency layout and as an aid in device testing and characterization Device Package Evaluation Board PN LMH6645MF SOT23 5 CLC730068 LMH6645MA 8 Pin SOIC CLC730027 LMH6646MA 8 Pin SOIC CLC730036
18. finite for Vg 6V at room temperature and below For Vg gt 6V allowable short circuit duration is 1 5ms Note 12 Offset voltage average drift determined by dividing the change in Vog at temperature extremes into the total temperature change Note 13 Guaranteed based on characterization only www national com 6 Characteristics tT 25 Unless otherwise specified Closed Loop Frequency Response for Various Zv 9t SV99HINT Temperature Frequency Response for Various Ay GAIN 85 C 0 4 25 C 2 ao 4 T T Z z lt lt I X lt 5 PHASE 50 Ay 1 100 Vg 25 R 1K Vout 200MVpp 100k 1M 10M 100M 200M 100k 1M 10M 200M FREQUENCY Hz FREQUENCY Hz 20020248 20020249 Open Loop Gain Phase vs Frequency for Various Temperature THD vs Output Swing 70 5000 60 f 100KHz 50 PHASE 100 40 80 om 30 85 C 85C leg c GAIN i 8 z 20 40 9 S lt 40 a 10 20 0 0 40 E 20 Vg 2 5 R 2k 100k 1M 10M 100M 1 2 3 4 5 6 7 8 FREQUENCY Hz Vout pp 20020250 20020253 THD vs Output Swing Output Swing vs Frequency THD dBc
19. ion of output loading current and varies from 100mV at no load to about 1V when output is delivering 20mA as measured from supplies Both input common mode voltage and output voltage level effect the supply current see typical performance characteristics for plot With 2 7V supplies and a common mode input voltage range that extends beyond either supply rail the LMH6645 6646 6647 family is well suited to many low voltage low power applications Even with 2 7V supplies the 3dB BW A y 1 is typically 55MHz with a tested limit of 45MHz Production testing guarantees that process varia tions will not compromise speed This device family is designed to avoid output phase rever sal With input over drive the output is kept near the supply rail or as close to it as mandated by the closed loop gain setting and the input voltage Figure 1 below shows the input and output voltage when the input voltage significantly exceeds the supply voltages Vg 2 5V Ry 10 Ay 1 2 10 0 us DIV 20020233 FIGURE 1 Input Output Shown with Exceeded Input CMVR As can be seen the output does not exhibit any phase reversal as some op amps do However if the input voltage range is exceeded by more than a diode drop beyond either rail the internal ESD protection diodes will start to conduct The current flow in these ESD diodes should be externally limited LMH6647 Micro power Shutdown The LMH6647 can be shutdown to
20. ltiplexer the other device will need to conduct the current described in order to maintain the output potential To keep the output at or near ground during shutdown when there is no other device to hold the output low a switch transistor could be used to shunt the output to ground Figure 3 shows a circuit where a NPN bipolar is used to keep the output near ground 80mV SHUTDOWN INPUT 20020264 FIGURE 3 Active Pull Down Schematic Figure 4 shows the output waveform BLE EEE HEH HEHEHE 2 00 us DIV 20020236 2 FIGURE 4 Output Held Low by Active Pull Down Circuit If bipolar transistor power dissipation is not tolerable the switch could be by a N channel enhancement mode MOS FET 2 7V Single Supply RRIO 2 1 MUX The schematic show in Figure 5 will function as a 2 1 MUX operating on a single 2 7V power supply by utilizing the shutdown feature of the LMH6647 1 5 1 5 74HCO4 74HCO4 SELECT INPUT 2k INPUT A 27V SHUTDOWN INPUT 20020258 FIGURE 5 2 1 MUX Operating off a 2 7V Single Supply 15 www national com Zv 9t SV99HINT LMH6645 46 47 Application Notes continued Figure 6 shows the MUX output when selecting between a 1MHz sine and a 250KHz triangular waveform Vour HH MHH HH HHH SELECT T 1 1 us DIV 20020235 FIGURE 6 2 1 MUX Output As can be seen in Figure 6 th
21. nA Rin Common Mode Input MQ Resistance www national com 5V Electrical Characteristics continued Unless otherwise specified all limits guaranteed for at T 25 C 5V V OV Vem Vo V 2 and 2kQ and RL 1kQ to V 2 Boldface limits apply at the temperature extremes Symbol Parameter Conditions Min Typ Max Units Note 6 Note 5 Note 6 Cin Common Mode Input 2 pF Capacitance CMVR Input Common Mode Voltage CMRR gt 50 0 5 0 3 Range 0 1 CMRR Common Mode Rejection Vom Stepped from OV to 5V dB Ratio Vom Stepped from OV to 3 8V Avot Large Signal Voltage Gain Vo 1 5V to 3 5V dB Vo Output Swing R 1k to V 2 V High 10k to V 2 Output Swing 1k to V 2 Low 10k to V 2 igi lac Output Short Circuit Current Sourcing to V Vip 200mV Note 10 Sinking to V me Vip 200mV Note 10 lour Output Current Vout 0 5V From rails PSRR Power Supply Rejection Ratio 5V to 6V or OV to 1V dB Is Supply Current per channel Normal Operation Shutdown Mode LMH6647 only n 5V Electrical Characteristics Unless otherwise specified all limits guaranteed for at T 25 C V 5V V 5V Vom Vo OV 2kQ and R 1kQ to GND Boldface limits apply at the temperature extremes Symbol Parameter Conditions Min Typ Max Units Note 6 Note 5 Note 6 BW 3dB BW Ay 1
22. s Consistent performance from any supply voltage 2 7V 10V with little variation with supply voltage for the most important specifications e g BW SR lour etc Application Hints The total input common mode voltage range which extends from below V to beyond V is covered by both a PNP and a NPN stage The NPN stage is switched on whenever the input is less than 1 2V from V and the PNP stage covers the rest of the range In terms of the input voltage there is an overlapping region where both stages are processing the input signal This region is about 0 5V from beginning to the end As far as the device application is concerned this transition is a transparent operation However keep in mind that the input bias current value and direction will depend on which input stage is operating see typical performance characteristics for plots For low distortion applications it is best to keep the input common mode voltage from transvers ing this transition point Low gain settling applications which generally encounter larger peak to peak input voltages could be configured as inverting stages to eliminate common mode voltage fluctuations In terms of the output when the output swing approaches either supply rail the output transistor will enter a Quasi saturated state A subtle effect of this operational region is that there is an increase in supply current in this state up to 1mA The onset of Quasi saturation region is a funct
23. stance Note 4 04 SOT23 5 265 C W SOT23 6 265 C W SOIC 8 190 C W MSOP 8 235 C W Symbol Parameter Conditions Min Typ Max Units Note 6 Note 5 Note 6 BW 3dB BW Ay 1 200MVpp 40 55 MHz Vom 0 7V en Input Referred Voltage Noise f 100kHz 17 f 1kHz 25 nvi in Input Referred Current Noise f 100kHz 075 A Hz f thie e Cross Talk Rejection f 5MHz Receiver dB LMH6646 only R Rg 5100 Ay 2 Slew Rate Ay 1 Vo 2Vpp V us Note 8 13 Turn On Time ns LMH6647 only Torr Turn Off Time 560 ns LMH6647 only aME THsp Shutdown Threshold 15 lt 50A 1 95 2 30 LMH6647 only Isp Shutdown Pin Input Current Note 7 20 pA LMH6647 only Vos Input Offset Voltage OV x Vom 2 7V t1 3 mV 4 TC Vos Input Offset Average Drift Note 12 5 lg Input Bias Current Vom 2 5V Note 7 2 2 2 Vom 0 5V Note 7 2 2 2 los Input Offset Current OV lt Vom 2 7V 500 nA Rin Common Mode Input MQ Resistance Cin Common Mode Input pF Capacitance CMVR Input Common Mode Voltage CMRR gt 50dB 0 5 Range 0 1 3 0 3 2 2 8 www national com Lv 9t SV99HINT LMH6645 46 47 2 7V Electrical Characteristics Continueo Unless otherwise specified all limits guaranteed for at T 25 C V 2 7V V OV Vow Vo V 2 and R 2kQ RL 1kQ to V 2 Boldface limits appl
24. y at the temperature extremes Symbol Parameter Conditions Min Typ Max Units Note 6 Note 5 Note 6 CMRR Common Mode Rejection Vom Stepped from OV to 2 7V 46 77 dB Ratio Vom Stepped from OV to 1 55V 58 76 Avot Large Signal Voltage Gain Vo 0 35V to 2 35V 76 87 dB Vo Output Swing High Output Swing 1k to V 2 Low 10k to V 2 Isc Output Short Circuit Current Sourcing to V Vip 200mV Note 10 Sinking to V Ts Vip 200mV Note 10 PSRR 2 7V to 3 7V or dB OV to 1V ls Supply Current per channel Normal Operation 650 1250 Shutdown Mode LMH6647 only 15 50 Bm 5V Electrical Characteristics Unless otherwise specified all limits guaranteed for at T 25 C 5V V OV Vem Vo V 2 and R 2kQ and RL 1kQ to V 2 Boldface limits apply at the temperature extremes Input Referred Current Noise Parameter Conditions Min Typ Max Note 6 Note 5 Note 6 BW Ay 1 200MVpp 40 55 Input Referred Voltage Noise f 100kHz nv JHz f 100kHz f 1kHz Cross Talk Rejection LMH6646 only f 5MHz Receiver R Rg 5100 Ay 2 Slew Rate Shutdown Threshold LMH6647 only Ay 1 Vo 2Vpp Note 8 13 Shutdown Pin Input Current LMH6647 only Input Offset Voltage Input Bias Current Vom 4 8V Note 7 Vom 0 5V Note 7 los Input Offset Current OV lt Vom lt 5V

National Semiconductor LMH6645/46/47 2.7V 650 A 55MHz Rail-to-Rail Input Output Amplifiers with Shutdown Option handbook

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