ANALOG DEVICES AD8568 English products handbook
Contents
1. 350 40 25 85 TPC 4 Input Bias Current vs Temperature 40 25 85 TEMPERATURE TPC 5 Input Offset Current vs Temperature 40 25 85 TEMPERATURE TPC 6 Output Voltage Swing vs Temperature REV AD8568 AD8569 AD8570 0 80 5 0 75 0 70 0 65 0 60 OUTPUT VOLTAGE SWING mV 0 55 SUPPLY CURRENT AMPLIFIER mA 40 25 85 40 25 85 TEMPERATURE TEMPERATURE TPC 7 Output Voltage Swing vs Temperature TPC 10 Supply Current Amplifier vs Temperature 0 9999 7 4 5 lt Vg lt 16V 0 5V TO 15V 5 5 E yd 2 5 wi 0 9997 tr ul 3 lt 2 1 10 C 200pF 0 9995 0 40 25 85 40 25 85 TEMPERATURE TEMPERATURE TPC 8 Voltage Gain vs Temperature TPC 11 Slew Rate vs Temperature 1k 1 0 Ta 25 25 C 0 9 1 Vo Vs 2 08 lt 100 m t 07 E Vs 4 5V 06 o 5 lt 9 10 Vg 16V E 05 E ui 2 o4 5 8 o gt 03 1 amp 0 2 o 0 1 0 1 0 0 001 0 01 0 1 1 102. Added TSSOP Package to OUTLINE DIMENSIONS 2 1 2 10 REV 11 9 0 c1 0 2 9202
3. 1 300pF 5 9 LOAD CAPACITANCE pF TIME 2ps DIV TPC 21 Small Signal Overshoot vs Load Capacitance TPC 24 Large Signal Transient Response REV 7 AD8568 AD8569 AD8570 25 25 Vs 4 5V Vs 4 5V Ay 1 1 Ry 1 Ry 10kO C 300pF C 100pF 5 Q 5 5 rum 9 lt 9 a 2 d gt TIME 25 01 TIME 15 21 TPC 25 Large Signal Transient Response TPC 27 Small Signal Transient Response 25 C Vs 16V Ay 1 RL C 100pF gt a 5 5 8 amp 5 TIME 1p s DIV TIME 40p s DIV TPC 26 Small Signal Transient Response TPC 28 No Phase Reversal g REV AD8568 AD8569 AD8570 APPLICATIONS Theory of Operation This family of buffers is designed to drive large capacitive loads in LCD applications Each has high output current drive and rail to rail input output operation and can be powered from a single 16 V supply They are also intended for other applications where low distortion and high output current drive are needed Input Overvoltage Protection As with any semiconductor device whenever the input exceeds either supply voltage attention needs to be paid to the inp
4. TAS 85 250 mV 4 5 5 mA 95 300 mV 40 lt TAS 85 400 mV Continuous Output Current 35 Peak Output Current Ipk Vs 16 V 250 mA TRANSFER CHARACTERISTICS Gain Ry 2 0 995 0 9985 1 005 V V 40 C lt Ta lt 85 C 0 995 0 9980 1 005 V V Gain Linearity NL 2 Vo 0 5 to Vs 0 5 V 0 01 POWER SUPPLY Supply Voltage Vs 4 5 16 V Power Supply Rejection Ratio PSRR Vs 4Vto17V 40 lt Ta lt 85 C 70 90 dB Supply Current Amplifier Isy Vo Vg 2 No Load 700 850 40 lt lt 85 1 mA DYNAMIC PERFORMANCE Slew Rate SR 10 200 pF 4 6 V us Bandwidth BW 3 dB 10 C 10 pF 6 MHz Phase Margin 10 kQ C 10 pF 65 Degrees Channel Separation 75 dB NOISE PERFORMANCE Voltage Noise Density n f 1 kHz 26 nV VHz n f 10 kHz 25 nV VHz Current Noise Density in f 10 kHz 0 8 pA VHz Specifications subject to change without notice AD8568 AD8569 AD8570 ABSOLUTE MAXIMUM RATINGS Supply Voltage ER xad ed 18V Input Voltage 0 5 V to Vs 0 5 V Differential Input Voltage Storage Temperature Range 65 to 150 C Operating Temperature Range 40 to 85 C Junction Temperature Range 65 to 150 C Lead Temperature Range Soldering 60 sec Stresses above those listed under Absolute Maximum Ratings may cause p
5. Y 0 00 0 17 PLANE 008 0 0 50 TA COPLANARITY 23071 SEATING 0 45 0 10 030 0 0 30 COMPLIANT TO JEDEC STANDARDS 187 COMPLIANT TO JEDEC STANDARDS MO 178AB 32 Lead Lead Frame Chip Scale Package LFCSP 5 5mm Body CP 32 2 Dimensions shown in millimeters fos MAX 0 60 MAX PIN 1 INDICATOR PIN 1 INDICATOR 0 50 BSC BOTTOM VIEW 0 50 0 4071 0 30 1 CL TL EL TL D 0 25 MIN 3 50 REF ja 0 65 TYP 0 05 MAX 100 y L IHHHHHHHLA 0 02 NOM 0 85 0 30 E 0 30 COPLANARITY 0 80 23 0 20 0 08 SEATING 018 COMPLIANT TO JEDEC STANDARDS MO 220 VHHD 2 10 REV AD8568 AD8569 AD8570 OUTLINE DIMENSIONS 20 Lead Thin Shrink Small Outline Package TSSOP RU 20 Dimensions shown in millimeters 0 75 8 gt j je 0 60 COPLANARITY 0 19 SEATING 9 0 45 0 10 PLANE COMPLIANT TO JEDEC STANDARDS MO 153AC Revision History Location Page 12 03 Data Sheet changed from REV B to REV C Updated ORDERING GUME RATER 3 Updated OUTLINE DIMENSIONS dined anand eatie ead Samal 10 5 02 Data Sheet changed from REV A to REV B Added 20 Lead TSSOP Package dedo OR EOS ARR RU 1 Added Package Type debe ra nb A EA HR Gg edad ew E hee 3 Updated ORDERING GUIDE e OR eie ee re ee PAs RR 3
6. to 85 C 20 Lead TSSOP RU 20 Z Pb free part ESD electrostatic discharge sensitive device Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection Although the AD8568 AD8569 AD8570 features proprietary ESD protection circuitry permanent damage may occur on devices subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality REV WARNING ESD SENSITIVE DEVICE 08568 08569 08570 Performance Characteristics INPUT OFFSET VOLTAGE mV 25 90 F 45V Vs lt 16V 80 70 9 60 5 gt 40 5 30 20 10 0 12 9 6 3 0 3 6 9 12 INPUT OFFSET VOLTAGE mV TPC 1 Input Offset Voltage Distribution 300 4 5V Vs lt 16V 250 T 5 200 5 150 gt 2 5 100 50 _ 0 10 20 30 40 50 60 70 80 90 100 TCVOS WVC TPC 2 Input Offset Voltage Drift Distribution 0 0 25 0 50 0 75 1 00 1 25 1 50 40 25 85 TEMPERATURE TPC 3 Input Offset Voltage vs Temperature INPUT BIAS CURRENT nA OUTPUT VOLTAGE SWING V INPUT OFFSET CURRENT nA 150 200 250 300
7. 100 0 2 4 6 8 10 12 14 16 18 LOAD CURRENT mA SUPPLY VOLTAGE V TPC 9 Output Voltage to Supply Rail vs Load Current TPC 12 Supply Current Amplifier vs Supply Voltage REV 5 AD8568 AD8569 AD8570 a 2 z z lt o 5 n 5 25 o Ta 25 Vg 8V Vs 16V Vin 50mV rms 1 40pF 10kO Ay z 1 DISTORTION lt 1 0 100k 1M 10M 100M 10 100 1k 10k 100k 1M FREQUENCY Hz FREQUENCY Hz TPC 13 Frequency Response vs Resistive Loading TPC 16 Closed Loop Output Swing vs Frequency 25 25 C 20 Vg 8V Vin 50mV rms 3 15 F 10kO Ay 1 10 E 5 5 Z E z 50pF 5 gt 1040 y 100pF a 10 2 540pF 5 20 a 25 100k 1M 10M 100M FREQUENCY Hz FREQUENCY Hz TPC 14 Frequency Response vs Capacitive Loading TPC 17 Power Supply Rejection Ratio vs Frequency 500 160 25 450 a 140 F vs 4 5V 400 1
8. 20 350 100 PSRR S Vg 4 5V 2 250 2 60 PSRR m tr 200 2 40 2 5 150 8 20 100 50 Vs 16V 4 8 20 0 40 100 1k 10k 100k 1M 10M 100 1k 10k 100k 1M 10M FREQUENCY Hz FREQUENCY Hz TPC 15 Closed Loop Output Impedance vs Frequency TPC 18 Power Supply Rejection Ratio vs Frequency E REV AD8568 AD8569 AD8570 1 000 25 C 25 C 4 5V Vg 16V Vs 4 5V Vom 2 25V Vin 100mV Ay 1 10kO OVERSHOOT VOLTAGE NOISE DENSITY nV VHz 1 0 10 100 1k FREQUENCY Hz LOAD CAPACITANCE pF TPC 19 Voltage Noise Density vs Frequency TPC 22 Small Signal Overshoot vs Load Capacitance 15 25 C Vg 8V gt 10 5 gt 5 s OVERSHOOT SETTLING TO 0 1 0 2 5 2 5 25 5 5 5 UNDERSHOOT SETTLING TO 0 1 9 _10 15 100 1k 10k 100k 1M 10M 100 0 5 1 0 15 2 0 FREQUENCY Hz SETTLING TIME TPC 20 Channel Separation vs Frequency TPC 23 Settling Time vs Step Size 25 C 25 C Vs 16V Vg 16V Vem 8V 1 Vin 100 10 0 Ay
9. ANALOG DEVICES 16 V Rail to Rail Buffer Amplifiers AD8568 AD8569 AD85 70 FEATURES Single Supply Operation 4 5 V to 16 V Input Capability Beyond the Rails Rail to Rail Output Swing Continuous Output Current 35 mA Peak Output Current 250 mA Offset Voltage 10 mV Max Slew Rate 6 V s Stable with 1 Loads Supply Current APPLICATIONS LCD Reference Drivers Portable Electronics Communications Equipment GENERAL DESCRIPTION The AD8568 AD8569 and AD8570 are low cost single supply buffer amplifiers with rail to rail input and output capability They are optimized for LCD monitor applications and built on an advanced high voltage CBCMOS process The AD8568 includes two buffers the AD8569 includes four buffers and the AD8570 includes eight buffers These LCD buffers have high slew rates 35 mA continuous output drive and high capacitive load drive capability They have a wide supply range and offset voltages below 10 mV The AD8568 AD8569 and AD8570 are specified over the 40 C to 85 temperature range They are available on tape and reel with the AD8568 packaged in a 6 lead SOT 23 the AD8569 in a 10 lead MSOP and the AD8570 in a 32 lead LFCSP and 20 lead TSSOP REV Information furnished by Analog Devices is believed to be accurate and reliable However no responsibility is assumed by Analog Devices for its use norfor any infringements of patents or other rights ofthird parties that may res
10. elow 0 08 When the device is powered from a 16 V supply the THD N stays below 0 03 Figure 2 shows the AD8568 THD N versus frequency performance THD N FREQUENCY Hz Figure 2 AD8568 THD N vs Frequency Short Circuit Output Conditions The buffer family does not have internal short circuit protection circuitry As a precautionary measure do not short the output directly to the positive power supply or to ground It is not recommended to operate the AD856x with more than 35 mA of continuous output current The output current can be limited by placing a series resistor at the output of the amplifier whose value can be derived using the following equation Vs 35mA Ry gt For a 5 V single supply operation Ry should have a minimum value of 143 Q 9 AD8568 AD8569 AD8570 OUTLINE DIMENSIONS 6 Lead Small Outline Transistor Package SOT 23 RT 6 Dimensions shown in millimeters 10 Lead Micro Small Outline Package MSOP RM 10 Dimensions shown in millimeters 2 90 BSC 3 00 BSC 6 5 4 1 1 60 2 80 BSC 3 00 BSC 4 90 BSC 1 2 3 PIN 1 um i 0 95 BSC 1 90 1 30 BSC 0 95 1 15 0 85 1 10 MAX mi 55 hemp t i 5 0 22 0 15 0 27 SEATING 0 23 f 5 0 08
11. erma nent damage to the device This is a stress rating only functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied Exposure to absolute maximum rating Package Type Vy Unit 6 Lead SOT 23 RT 250 140 C W 10 Lead MSOP RM 200 44 C W 20 Lead TSSOP RU 72 45 C W 32 Lead LFCSP CP 35 13 C W NOTES Ora is specified for worst case conditions i e Oya is specified for a device soldered onto a circuit board for surface mount packages Wp is applied for calculating the junction temperature by reference to the board temperature conditions for extended periods may affect device reliability CAUTION ORDERING GUIDE Temperature Package Package Branding Model Range Description Option Information AD8568ART R2 40 to 85 C 6 Lead SOT 23 RT 6 AWA AD8568ART REEL 40 to 85 C 6 Lead SOT 23 RT 6 AWA AD8568ART REEL7 40 to 85 C 6 Lead SOT 23 RT 6 AWA AD8569ARM R2 40 to 85 C 10 Lead MSOP RM 10 AXA AD8569ARM REEL 40 to 85 C 10 Lead MSOP RM 10 AXA AD8569ARMZ REEL 40 to 85 C 10 Lead MSOP RM 10 AXA AD8570ACP R2 40 to 85 C 32 Lead LFCSP CP 32 2 AD8570ACP REEL 40 to 85 C 32 Lead LFCSP CP 32 2 AD8570ACP REEL7 40 to 85 C 32 Lead LFCSP CP 32 2 AD8570ARU 40 to 85 20 Lead TSSOP RU 20 AD8570ARU REEL 40
12. roperly once the junction temperature is reduced below 150 C If the maximum junction temperature is exceeded for an extended period of time overheating could lead to permanent damage of the device The maximum safe junction temperature Timax is 150 C Using the following formula we can obtain the maximum power that the buffer family can safely dissipate as a function of temperature Ta where the power dissipation Tmax the maximum allowable junction temperature 150 C T4 ambient temperature of the circuit 0 4 the AD856x package thermal resistance junction to ambient The power dissipated by the device can be calculated as Vs E Vovr X where Vs the supply voltage Vour the output voltage the output load current REV C Figure 1 shows the maximum power dissipation versus temperature To achieve proper operation use the previous equation to calculate Ppiss for a specific package at any given temperature or see Figure 1 1 00 0 75 LEAD MSOP 6 LEAD SOT 0 50 0 25 MAXIMUM POWER DISSIPATION W 0 35 15 5 25 45 65 85 AMBIENT TEMPERATURE C Figure 1 Maximum Power Dissipation vs Temperature for 6 and 10 Lead Packages Total Harmonic Distortion Noise THD N The buffer family features low THD N The total harmonic distortion plus noise for the buffer over the entire supply range is b
13. ult from its use No license is granted by implication or otherwise under any patent or patent rights of Analog Devices Trademarks and registered trademarks are the property of their respective owners PIN CONFIGURATIONS 6 Lead SOT 23 RT Suffix 10 Lead MSOP RM Suffix 32 Lead LFCSP CP Suffix pini 24 GND INDICATOR 23 NC 22 OUT C 21 OUT D AD8570 20 OUT E TOP VIEW 19 OUT F 18 NC 17 GND NC NO CONNECT 20 Lead TSSOP TOP VIEW One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 www analog com Fax 781 326 8703 2003 Analog Devices Inc All rights reserved AD8568 AD8569 AD8570 SPECIFICATIONS ELECTRICAL CHARACTERISTICS 4 5 V V 16 V Vow Vs 2 T 25 C unless otherwise noted Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage Vos 2 10 mV Offset Voltage Drift AVos AT 40 lt Ta lt 85 5 Input Bias Current Iz 80 600 nA 40 lt Ta lt 85 C 800 nA Input Voltage Range 0 5 Vs 0 51 V Input Impedance 400 kQ Input Capacitance 1 OUTPUT CHARACTERISTICS Output Voltage High Vou Ij 100 Vs 0 005 16 5 mA 15 85 15 95 40 lt lt 85 15 75 4 5 1 5 mA 4 2 4 38 40 lt lt 85 4 1 Output Voltage Low Vor 100 5 mV 16 5 mA 42 150 mV 40 lt
14. ut overvoltage characteristics As an overvoltage occurs the amplifier could be damaged depending on the voltage level and the magnitude of the fault current When the input voltage exceeds either supply by more than 0 6 V the internal pn junctions will allow current to flow from the input to the supplies This input current is not inherently damaging to the device as long as it is limited to 5 mA or less If a condition exists using the buffers where the input exceeds the supply by more than 0 6 V an external series resistor should be added The size of the resis tor can be calculated by using the maximum overvoltage divided by 5 mA This resistance should be placed in series with the input exposed to an overvoltage Output Phase Reversal The buffer family is immune to phase reversal Although the device s output will not change phase large currents due to input overvoltage could damage the device In applications where the possibility exists of an input voltage exceeding the supply voltage overvoltage protection should be used as described in the previous section Power Dissipation The maximum allowable internal junction temperature of 150 C limits the device s maximum power dissipation As the ambient temperature increases the maximum power dissipated by the device must decrease linearly to maintain the maximum junc tion temperature If this maximum junction temperature is exceeded momentarily the device will still operate p
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ANALOG DEVICES AD8568 English products handbook