ANALOG DEVICES AD8539

Low Power, Precision, Auto-Zero Op Amps AD8538/AD8539 FEATURES PIN CONFIGURATIONS Low offset voltage: 13 μV maximum OUT 1 5 V+ Input offset drift: 0.03 μV/°C AD8538 V– 2 Single-supply operation: 2.7 V to 5.5 V TOP VIEW (Not to Scale) High gain, CMRR, and PSRR +IN 3 4 –IN Low input bias current: 25 pA Low supply current: 180 μA Figure 1. 5-Lead TSOT-23 (UJ-5) APPLICATIONS NC 1 8 NC Mobile communications AD8538 −IN 2 7 V+ +IN 3 6 OUT Portable instrumentation TOP VIEW (Not to Scale) V− 4 5 NC Battery-powered devices Sensor interfaces NC = NO CONNECT Temperature measurement Figure 2. 8-Lead SOIC_N (R-8) Electronic scales OUT A 1 8 V+ GENERAL DESCRIPTION AD8539 –IN A 2 7 OUT B The AD8538/AD8539 are very high precision amplifiers featuring +IN A 3 6 –IN B TOP VIEW (Not to Scale) extremely low offset voltage, low input bias current, and low power V– 4 5 +IN B consumption. The supply current is less than 215 μA maximujm Figure 3. 8-Lead SOIC_N (R-8) per amplifier at 5.0 V. Operation is fully specified from 2.7 V to 5.0 V single supply (±1.35 V to ±2.5 V dual supply). OUT A 1 8 V+ The AD8538/AD8539 operate at very low power making these AD8539 –IN A 2 7 OUT B amplifiers ideal for battery-powered devices and portable +IN A 3 TOP VIEW 6 –IN B equipment. (Not to Scale) V– 4 5 +IN B The AD8538/AD8539 are specified over the extended industrial Figure 4. 8-Lead MSOP (RM-8) temperature range (−40°C to +125°C). The AD8538 amplifier is available in 5-lead TSOT-23, and 8-lead, narrow body SOIC packages, and the AD8539 amplifier is available in 8-lead, narrow body SOIC and 8-lead MSOP. Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781.461.3113 ©2005–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 06741-001 06741-002 06741-033 06741-034 AD8538/AD8539 TABLE OF CONTENTS Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................7 Applications....................................................................................... 1 Thermal Resistance.......................................................................7 General Description ......................................................................... 1 ESD Caution...................................................................................7 Pin Configurations ........................................................................... 1 Typical Performance Characteristics ..............................................8 Revision History ............................................................................... 2 AD8538 Characteristics................................................................8 Specifications..................................................................................... 3 AD8539 Characteristics............................................................. 14 AD8538 Electrical Specifications ............................................... 3 Outline Dimensions ....................................................................... 20 AD8539 Electrical Specifications ............................................... 5 Ordering Guide .......................................................................... 21 REVISION HISTORY 5/07—Rev. 0 to Rev. A Added AD8539 ...................................................................Universal Updated Outline Dimensions....................................................... 20 Changes to Specifications Section.................................................. 3 Changes to Ordering Guide .......................................................... 21 Added Table 3, Renumbered Tables Sequentially ........................ 5 Added Table 4, Renumbered Tables Sequentially ........................ 6 10/05—Revision 0: Initial Version Changes to Thermal Resistance Section........................................ 7 Added Figure 32 and Figure 33..................................................... 13 Added AD8539 Characteristics Section, Renumbered Figures Sequentially ..................................................................................... 14 Rev. A | Page 2 of 24 AD8538/AD8539 SPECIFICATIONS AD8538 ELECTRICAL SPECIFICATIONS @ V = 5.0 V, V = 2.5 V, V = 2.5 V, T = 25°C, unless otherwise specified. S CM O A Table 1. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS 5 13 μV −40°C ≤ T ≤ +125°C 30 μV A Input Bias Current I 15 25 pA B −40°C ≤ TA ≤ +85°C 35 100 pA −40°C ≤ TA ≤ +125°C 0.7 1.0 nA Input Offset Current IOS 20 50 pA −40°C ≤ T ≤ +125°C 150 pA A Input Voltage Range 0 5 V Common-Mode Rejection Ratio CMRR V = 0 V to 5 V 115 150 dB CM −40°C ≤ TA ≤ +125°C, VCM = 0.2 V to 4.8 V 100 135 dB Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.1 V to 4.9 V 115 141 dB −40°C ≤ TA ≤ +125°C 110 135 dB Offset Voltage Drift −40°C ≤ T ≤ +125°C 0.03 0.1 μV/°C ΔV /ΔT A OS OUTPUT CHARACTERISTICS Output Voltage High V R = 100 kΩ to ground 4.99 4.998 V OH L −40°C ≤ T ≤ +125°C, R = 100 kΩ to ground 4.98 V A L RL = 10 kΩ to ground 4.95 4.970 V −40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground 4.94 V Output Voltage Low VOL RL = 100 kΩ to V+ 1.9 5 mV −40°C ≤ T ≤ +125°C, R = 100 kΩ to V+ 2.8 7 mV A L R = 10 kΩ to V+ 17 20 mV L −40°C ≤ T ≤ +125°C, R = 10 kΩ to V+ 20 30 mV A L Short-Circuit Limit ISC ±25 mA POWER SUPPLY Power Supply Rejection Ratio PSRR V = 2.7 V to 5.0 V 105 125 dB S −40°C ≤ TA ≤ +125°C 100 125 dB Supply Current/Amplifier ISY IO = 0 150 180 μA −40°C ≤ TA ≤ +125°C 190 215 μA DYNAMIC PERFORMANCE Slew Rate SR RL =10 kΩ 0.4 V/μs Settling Time 0.01% t G = ±1, 2 V step, C = 20 pF, R = 1 kΩ 10 μs S L L Overload Recovery Time 0.05 ms Gain Bandwidth Product GBP 430 kHz Phase Margin ØM RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF 65 Degrees NOISE PERFORMANCE Voltage Noise e f = 0.1 Hz to 10 Hz 2.0 μV p-p n p-p Voltage Noise Density en f = 1 kHz 50 nV/√Hz Rev. A | Page 3 of 24 AD8538/AD8539 @ V = 2.7 V, V = 1.35 V, V = 1.35 V, T = 25°C, unless otherwise specified. S CM O A Table 2. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage V 5 13 μV OS −40°C ≤ T ≤ +125°C 30 μV A Input Bias Current I 15 25 pA B −40°C ≤ TA ≤ +85°C 35 100 pA −40°C ≤ TA ≤ +125°C 0.7 1.0 nA Input Offset Current IOS 20 50 pA −40°C ≤ T ≤ +125°C 150 pA A Input Voltage Range 0 2.7 V Common-Mode Rejection Ratio CMRR V = 0 V to 2.5 V 110 140 dB CM −40°C ≤ TA ≤ +125°C 100 135 dB Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.1 V to 1.7 V 110 140 dB −40°C ≤ TA ≤ +125°C 105 135 dB Offset Voltage Drift −40°C ≤ T ≤ +125°C 0.03 0.1 μV/°C ΔV /ΔT A OS OUTPUT CHARACTERISTICS Output Voltage High V R = 100 kΩ to ground 2.68 2.698 V OH L −40°C ≤ T ≤ +125°C, R = 100 kΩ to ground 2.68 V A L R = 10 kΩ to ground 2.67 2.68 V L −40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground 2.66 V Output Voltage Low VOL RL = 100 kΩ to V+ 1.7 5 mV −40°C ≤ T ≤ +125°C, R = 100 kΩ to V+ 2.4 5 mV A L R = 10 kΩ to V+ 14 20 mV L −40°C ≤ T ≤ +125°C, R = 10 kΩ to V+ 20 25 mV A L Short-Circuit Limit ISC ±8 mA POWER SUPPLY Power Supply Rejection Ratio PSRR V = 2.7 V to 5.5 V 105 125 dB S −40°C ≤ TA ≤ +125°C 100 125 dB Supply Current/Amplifier ISY IO = 0 150 180 μA −40°C ≤ TA ≤ +125°C 190 215 μA DYNAMIC PERFORMANCE Slew Rate SR RL = 10 kΩ 0.35 V/μs Settling Time 0.01% t G = ±1, 1 V step, C = 20 pF, R = 1 kΩ 5 μs S L L Overload Recovery Time 0.05 ms Gain Bandwidth Product GBP 430 kHz Phase Margin ØM RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF 65 Degrees NOISE PERFORMANCE Voltage Noise e f = 0.1 Hz to 10 Hz 2.0 μV p-p n p-p Voltage Noise Density en f = 1 kHz 50 nV/√Hz Rev. A | Page 4 of 24 AD8538/AD8539 AD8539 ELECTRICAL SPECIFICATIONS @ VS = 5.0 V, VCM = 2.5 V, VO = 2.5 V, TA = 25°C, unless otherwise specified. Table 3. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS 5 15 μV −40°C ≤ TA ≤ +125°C 30 μV Input Bias Current IB 15 60 pA −40°C ≤ T ≤ +85°C 35 125 pA A −40°C ≤ T ≤ +125°C 0.7 1.0 nA A Input Offset Current IOS 20 70 pA −40°C ≤ TA ≤ +125°C 400 pA Input Voltage Range 0 5 V −40°C ≤ T ≤ +125°C 0.2 4.8 V A Common-Mode Rejection Ratio CMRR V = 0 V to 5 V 115 135 dB CM −40°C ≤ T ≤ +125°C, V = 0.2 V to 4.8 V 100 130 dB A CM Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.1 V to 4.9 V 110 130 dB −40°C ≤ TA ≤ +125°C 110 125 dB Offset Voltage Drift −40°C ≤ TA ≤ +125°C 0.03 0.1 μV/°C ΔV /ΔT OS OUTPUT CHARACTERISTICS Output Voltage High VOH RL = 100 kΩ to ground 4.99 4.994 V −40°C ≤ T ≤ +125°C, R = 100 kΩ to ground 4.98 V A L R = 10 kΩ to ground 4.95 4.97 V L −40°C ≤ T ≤ +125°C, R = 10 kΩ to ground 4.94 V A L Output Voltage Low VOL RL = 100 kΩ to V+ 5 7 mV −40°C ≤ TA ≤ +125°C, RL = 100 kΩ to V+ 6 8 mV RL = 10 kΩ to V+ 20 25 mV −40°C ≤ T ≤ +125°C, R = 10 kΩ to V+ 24 30 mV A L Short-Circuit Limit I ±25 mA SC POWER SUPPLY Power Supply Rejection Ratio PSRR V = 2.7 V to 5.0 V 105 125 dB S −40°C ≤ T ≤ +125°C 100 125 dB A Supply Current/Amplifier ISY IO = 0 170 210 μA −40°C ≤ TA ≤ +125°C 225 μA DYNAMIC PERFORMANCE Slew Rate SR RL =10 kΩ 0.4 V/μs Settling Time 0.01% tS G = ±1, 2 V step, CL = 20 pF, RL = 1 kΩ 10 μs Overload Recovery Time 0.05 ms Gain Bandwidth Product GBP 430 kHz Phase Margin Ø R = 10 kΩ, R = 100 kΩ, C = 20 pF 65 Degrees M L L L NOISE PERFORMANCE Voltage Noise e f = 0.1 Hz to 10 Hz 1.2 μV p-p n p-p Voltage Noise Density e f = 1 kHz 52 n nV/√Hz Rev. A | Page 5 of 24 AD8538/AD8539 @ V = 2.7 V, V = 1.35 V, V = 1.35 V, T = 25°C, unless otherwise specified. S CM O A Table 4. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage V 5 16 μV OS −40°C ≤ T ≤ +125°C 30 μV A Input Bias Current I 15 25 pA B −40°C ≤ TA ≤ +85°C 35 125 pA −40°C ≤ TA ≤ +125°C 0.7 1.0 nA Input Offset Current IOS 20 50 pA −40°C ≤ T ≤ +125°C 300 pA A Input Voltage Range 0 2.7 V −40°C ≤ T ≤ +125°C 0.2 2.5 A Common-Mode Rejection Ratio CMRR VCM = 0 V to 2.7 V 110 130 dB −40°C ≤ TA ≤ +125°C, VCM = 0.2 V to 2.5 V 100 125 dB Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.1 V to 2.6 V 110 130 dB −40°C ≤ T ≤ +125°C 105 125 dB A Offset Voltage Drift −40°C ≤ T ≤ +125°C 0.03 0.1 μV/°C ΔV /ΔT A OS OUTPUT CHARACTERISTICS Output Voltage High V R = 100 kΩ to ground 2.68 2.693 V OH L −40°C ≤ T ≤ +125°C, R = 100 kΩ to ground 2.68 V A L RL = 10 kΩ to ground 2.67 2.68 V −40°C ≤ TA ≤ +125°C, RL = 10 kΩ to ground 2.66 V Output Voltage Low V R = 100 kΩ to V+ 5 7 mV OL L −40°C ≤ T ≤ +125°C, R = 100 kΩ to V+ 6 8 mV A L R = 10 kΩ to V+ 14 20 mV L −40°C ≤ TA ≤ +125°C, RL = 10 kΩ to V+ 20 25 mV Short-Circuit Limit ISC ±8 mA POWER SUPPLY Power Supply Rejection Ratio PSRR VS = 2.7 V to 5.5 V 105 125 dB −40°C ≤ TA ≤ +125°C 100 125 dB Supply Current/Amplifier ISY IO = 0 210 μA −40°C ≤ T ≤ +125°C 225 μA A DYNAMIC PERFORMANCE Slew Rate SR R = 10 kΩ 0.35 V/μs L Settling Time 0.01% t G = ±1, 1 V step, C = 20 pF, R = ∞ 8 μs S L L Overload Recovery Time 0.05 ms Gain Bandwidth Product GBP 430 kHz Phase Margin ØM RL = 10 kΩ, RL = 100 kΩ, CL = 20 pF 65 Degrees NOISE PERFORMANCE Voltage Noise en p-p f = 0.1 Hz to 10 Hz 2.0 μV p-p Voltage Noise Density en f = 1 kHz 55 nV/√Hz Rev. A | Page 6 of 24 AD8538/AD8539 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A THERMAL RESISTANCE Table 5. θ is specified for the worst-case conditions, that is, a device JA soldered in a circuit board for surface-mount packages. Parameter Rating Supply Voltage +6 V Table 6. Thermal Characteristics Input Voltage V − 0.3 V to V + 0.3 V SS DD Package Type θ θ Unit JA JC Differential Input Voltage ±6 V 5-Lead TSOT-23 (UJ-5) 207 61 °C/W Output Short-Circuit Duration to GND Observe derating curve 8-Lead SOIC_N (R-8) 125 43 °C/W Storage Temperature Range –65°C to +150°C 8-Lead MSOP (RM-8) 145 45 °C/W Lead Temperature (Soldering, 60 sec) 300°C Operating Temperature Range –40°C to +125°C Junction Temperature Range −65°C to +150°C ESD CAUTION Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Absolute maximum ratings apply at 25°C, unless otherwise noted. Rev. A | Page 7 of 24 AD8538/AD8539 TYPICAL PERFORMANCE CHARACTERISTICS AD8538 CHARACTERISTICS AD8538 only, V = 5 V or ±2.5 V, unless otherwise noted. SY 450 700 V = 5V V = 5V AND 2.7V SY SY 0V < V < 5V CM 400 T = 25°C 600 A 350 500 300 400 250 200 300 150 200 100 100 50 0 0 –10.0 –8.4 –6.8 –5.2 –3.6 –2.0 –0.4 1.2 2.8 4.4 6.0 7.6 9.2 25 45 65 85 105 125 INPUT OFFSET VOLTAGE (µV) TEMPERATURE (°C) Figure 5. AD8538 Input Offset Voltage Distribution Figure 8. AD8538 Input Bias Current vs. Temperature 14 160 V = 5V SY T = 25°C A –40°C < T < +125°C A 140 12 120 10 100 8 80 6 60 4 40 2 20 0 0 0 0.012 0.024 0.036 0.048 0.060 0.072 0.084 0.096 05 1 234 TCV (µV/°C) SUPPLY VOLTAGE (V) OS Figure 9. AD8538 Supply Current vs. Supply Voltage Figure 6. AD8538 Input Offset Voltage Drift Distribution 10 200 V = 5V SY T = 25°C 8 A 6 V = 5V SY 150 4 V = 2.7V SY 2 0 100 –2 –4 50 –6 –8 –10 0 1 234 05 –40 10 60 110 INPUT COMMON-MODE VOLTAGE (V) TEMPERATURE (°C) Figure 7. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage Figure 10. AD8538 Supply Current vs. Temperature Rev. A | Page 8 of 24 INPUT OFFSET VOLTAGE (µV) NUMBER OF AMPLIFIERS NUMBER OF AMPLIFIERS 06741-005 06741-004 06741-003 SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) INPUT BIAS CURRENT (pA) 06741-008 06741-007 06741-006 AD8538/AD8539 10000 70 V = 5V SY T = 25°C A 135 60 1000 50 V – V SY OH 90 100 40 V OL 30 10 SOURCE 45 20 ФM 1 10 0 0 SINK 0.1 V = ±2.5V AND ±1.35V SY –10 R = 100kΩ L C = 20pF L –45 0.01 –20 0.001 0.01 0.1 1 10 1k 10k 100k 1M LOAD CURRENT (mA) FREQUENCY (Hz) Figure 11. AD8538 Output Saturation Voltage vs. Load Current Figure 14. AD8538 Open-Loop Gain and Phase vs. Frequency 120 35 V = 5V V = 5V AND 2.7V SY SY R = 10kΩ T = 25°C L A 30 100 V – V SY OH 25 80 20 V 60 OL 15 40 10 20 5 0 0 100 1k 10k 100k 1M –40 –25 –10 5 20 35 50 65 80 95 110 125 FREQUENCY (Hz) TEMPERATURE (°C) Figure 12. AD8538 Output Saturation Voltage vs. Temperature Figure 15. AD8538 CMRR vs. Frequency 100 60 V = ±2.5V AND ±1.35V V = 5V AND 2.7V SY SY T = 25°C C = 20pF A L R = 2kΩ L 80 A = 100 V 40 +PSRR 60 A = 10 V 20 –PSRR 40 A = 1 V 0 20 0 –20 100 1k 10k 100k 1M 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) Figure 16. AD8538 PSRR vs. Frequency Figure 13. AD8538 Closed-Loop Gain vs. Frequency Rev. A | Page 9 of 24 CLOSED-LOOP GAIN (dB) OUTPUT SATURATION VOLTAGE (mV) OUTPUT SATURATION VOLTAGE (mV) 06741-011 06741-010 06741-009 OPEN-LOOP GAIN (dB) PSRR (dB) CMRR (dB) 06741-014 06741-013 OPEN-LOOP PHASE SHIFT (Degrees) 06741-012 AD8538/AD8539 1000 V = 5V V = 5V AND 2.7V SY SY A = 1 V C = 300pF L A = 100 R = 10kΩ V L 100 A = 10 V 10 A = 1 V 1 0.1 0.01 100 1k 10k 100k 1M TIME (4µs/DIV) FREQUENCY (Hz) Figure 20. AD8538 Large Signal Transient Response Figure 17. AD8538 Closed-Loop Output Impedance vs. Frequency 60 V = 5V SY V = 5V SY A =–50 V T = 25°C A 100 R = 2kΩ L 50 40 0 30 OS+ 0 20 OS– 10 –2.5 0 1 10 100 1000 TIME (10µs/DIV) LOAD CAPACITANCE (pF) Figure 21. AD8538 Positive Overload Recovery Figure 18. AD8538 Small Signal Overshoot vs. Load Capacitance V = 5V SY V = 5V AND 2.7V SY A =–50 V A = 1 V 0 C = 300pF L R = 2kΩ L –100 2.5 0 TIME (10µs/DIV) TIME (4µs/DIV) Figure 22. AD8538 Negative Overload Recovery Figure 19. AD8538 Small Signal Transient Response Rev. A | Page 10 of 24 SMALL SIGNAL OVERSHOOT (%) OUTPUT IMPEDANCE (Ω) VOLTAGE (50mV/DIV) 06741-016 06741-015 06741-022 V (V) V (mV) V (V) V (mV) OUT IN OUT IN VOLTAGE (1V/DIV) 06741-017 06741-018 06741-019 AD8538/AD8539 1000 V = 5V SY V T = 25°C IN A V OUT 100 V = 5V SY A = 1 V V = 6V p-p IN R = 10kΩ L 10 10 100 1k 10k TIME (200µs/DIV) FREQUENCY (Hz) Figure 25. AD8538 No Phase Reversal Figure 23. AD8538 Voltage Noise Density V = 5V AND 2.7V SY TIME (1s/DIV) Figure 24. AD8538 0.1 Hz to 10 Hz Input Voltage Noise Rev. A | Page 11 of 24 VOLTAGE NOISE DENSITY (nV/√Hz) VOLTAGE (500nV/DIV) 06741-020 06741-021 VOLTAGE (1V/DIV) 06741-023 AD8538/AD8539 V = 2.7 V or ±1.35 V, AD8538 only, unless otherwise noted. SY 180 10000 V = 2.7V V = 2.7V SY SY T = 25°C 0V < V < 2.7V 160 CM A T = 25°C A 1000 140 120 100 100 80 10 60 SOURCE SINK 40 1 20 0 0.1 –10.0 –8.4 –6.8 –5.2 –3.6 –2.0 –0.4 1.2 2.8 4.4 6.0 7.6 9.2 0.001 0.01 0.1 1 INPUT OFFSET VOLTAGE (µV) LOAD CURRENT (mA) Figure 26. AD8538 Input Offset Voltage Distribution Figure 29. AD8538 Output Saturation Voltage vs. Load Current 35 30 V = 2.7V SY V = 2.7V SY R = 10kΩ L –40°C < T < +125°C A 30 25 V = VOH SY 25 20 20 15 VOL 15 10 10 5 5 0 0 0 0.012 0.024 0.036 0.048 0.060 0.072 0.084 0.096 –40 –25 –10 5 203550 658095 110 125 TCV (µV/°C) TEMPERATURE (°C) OS Figure 27. AD8538 Input Offset Voltage Drift Distribution Figure 30. AD8538 Output Saturation Voltage vs. Temperature 80 10 V = 2.7V V = 2.7V SY SY T = 25°C T = 25°C A 8 A 70 R = 2kΩ L 6 60 4 50 2 40 0 –2 30 –4 20 OS+ –6 10 –8 OS– 0 –10 1 1000 02 0.5 1.0 1.5 2.0.5 10 100 LOAD CAPACITANCE (pF) INPUT COMMON-MODE VOLTAGE (V) Figure 31. AD8538 Small Signal Overshoot vs. Load Capacitance Figure 28. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 12 of 24 INPUT OFFSET VOLTAGE (µV) NUMBER OF AMPLIFIERS NUMBER OF AMPLIFIERS 06741-026 06741-025 06741-024 OUTPUT SATURATION VOLTAGE (mV) SMALL SIGNAL OVERSHOOT (%) OUTPUT SATURATION VOLTAGE (mV) 06741-029 06741-028 06741-027 AD8538/AD8539 1000 V = 2.7V SY V = 2.7V SY A = 1 V T = 25°C A C = 100pF L R = 10kΩ L 100 10 10 100 1k 10k 100k TIME (4µs/DIV) FREQUENCY (Hz) Figure 32. AD8538 Large Signal Transient Response Figure 33. AD8538 Voltage Noise Density Rev. A | Page 13 of 24 VOLTAGE (500mV/DIV) 06741-030 VOLTAGE NOISE DENSITY (nV/√Hz) 06741-032 AD8538/AD8539 AD8539 CHARACTERISTICS AD8539 only, VS = 5 V or ±2.5 V, unless otherwise noted. 800 1000.0 AD8539 AD8539 V = 5V V = 5V SY SY 700 0 < V < 5V CM 100.0 T = 25°C A 600 500 10.0 400 1.0 300 200 0.1 100 0 0.01 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 5 25 45 65 85 105 125 V (µV) TEMPERATURE (°C) OS Figure 34. AD8539 Input Offset Voltage Distribution Figure 37. AD8539 Input Bias Current vs. Temperature 60 400 AD8539 AD8539 V = ±2.5V SY V = 0V TO 5V 350 SY +125°C –40°C < V < 125°C 50 CM –40°C < T < +125°C A 300 +85°C 40 +25°C 250 –40°C 30 200 150 20 100 10 50 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 0.016 0.032 0.048 0.064 0.080 0.096 TCV (µV) V (V) OS SY Figure 35. AD8539 Input Offset Voltage Drift Distribution Figure 38. AD8539 Supply Current vs. Supply Voltage 20 400 AD8539 AD8539 V = 5V SY 375 0V < V < 5V CM T = 25°C A 10 350 325 V = ±2.5V SY 0 300 275 V = ±1.35V SY –10 250 225 –20 200 01 2 3 45 –40 –25 –10 5 20 35 50 65 80 95 110 125 V (V) TEMPERATURE (°C) CM Figure 39. AD8539 Supply Current vs. Temperature Figure 36. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 14 of 24 V (µV) NUMBER OF AMPLIFIERS NUMBER OF AMPLIFIERS OS 06741-036 06741-037 06741-035 INPUT BIAS CURRENT (pA) I (µA) I (µA) SY SY 06741-039 06741-040 06741-038 AD8538/AD8539 10000 120 120 AD8539 SOURCE, V = ± 2.5V S 100 100 80 80 1000 SINK, V = ± 1.35V S 60 60 40 40 100 SOURCE, V = ± 1.35V 20 20 S SINK, V = ± 2.5V S 0 0 –20 –20 10 –40 –40 –60 –60 AD8539 1 V = ±2.5V –80 –80 SY R = 2kΩ L –100 –100 C = 20pF L 0.1 –120 –120 0.001 0.01 0.1 1 10 100 1k 10k 100k 1M 10M I (mA) FREQUENCY (Hz) LOAD Figure 40. AD8539 Output Saturation Voltage vs. Load Current Figure 43. AD8539 Open-Loop Gain and Phase vs. Frequency 140 35 AD8539 AD8539 V = ±2.5V SY V = 5V CHANNEL B S 120 30 V - V , I = 250µA, R = 10kΩ DD OH L L 100 25 CHANNEL A 80 20 V , I = 250µA, R = 10kΩ OL L L 15 60 10 40 V - V , I = 25µA, R = 100kΩ DD OH L L 5 20 V , I = 25µA, R = 100kΩ OL L L 0 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 100 1k 10k 100k 1M 10M TEMPERATURE (°C) FREQUENCY (Hz) Figure 41. AD8539 Output Saturation Voltage vs. Temperature Figure 44. AD8539 CMRR vs. Frequency 60 120 AD8539 AD8539 V = ±2.5V V = ±2.5V SY SY A = 100 V 100 R = 2kΩ L 40 C = 20pF L PSRR– 80 A = 10 V PSRR+ 20 60 A = 1 V 40 0 20 –20 0 –40 –20 100 1k 10k 100k 1M 10M 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) Figure 42. AD8539 Closed-Loop Gain vs. Frequency Figure 45. AD8539 PSRR vs. Frequency Rev. A | Page 15 of 24 OUTPUT SATURATION VOLTAGE (mV) CLOSED-LOOP GAIN (dB) OUTPUT SATURATION VOLTAGE (mV) 06741-042 06741-043 06741-041 GAIN (Degrees) PSRR (dB) CMRR (dB) 06741-046 06741-045 PHASE (Degrees) 06741-044 AD8538/AD8539 1000 AD8539 AD8539 V = 5V 900 V = ±2.5V SY SY A = 1 V 800 C = 300pF L R = 10kΩ L 700 600 500 400 300 A = 100 A = 10 V A = 1 V V 200 100 0.01 TIME (4µs/DIV) 100 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 46. AD8539 Closed-Loop Output Impedance vs. Frequency Figure 49. AD8539 Large Signal Transient Response 60 0.15 5 AD8539 AD8539 V = ±2.5V SY V = ±2.5V SY 0.10 4 R = 2kΩ 50 L A = –50 V 0.05 3 INPUT VOLTAGE 40 0 2 30 –0.05 1 OS+ –0.10 0 20 –0.15 –1 OS– OUTPUT VOLTAGE 10 –0.20 –2 0 –0.25 –3 1 10 100 1k TIME (20µs/DIV) CAPACITANCE (pF) Figure 50. AD8539 Positive Overload Recovery Figure 47. AD8539 Small Signal Overshoot vs. Load Capacitance 0.05 7.5 AD8539 V = 5V SY 0 6.5 A = 1 V C = 300pF L INPUT VOLTAGE –0.05 AD8539 5.5 R = 2kΩ L V = ±2.5V SY A = –50 V –0.10 4.5 –0.15 3.5 –0.20 2.5 –0.25 1.5 OUTPUT VOLTAGE –0.30 0.5 –0.35 –0.5 TIME (2µs/DIV) TIME (20µs/DIV) Figure 48. AD8539 Small Signal Transient Response Figure 51. AD8539 Negative Overload Recovery Rev. A | Page 16 of 24 Z (Ω) OVERSHOOT (%) OUT VOLTAGE (50mV/DIV) 06741-049 06741-048 06741-047 INPUT VOLTAGE (50mV/DIV) INPUT VOLTAGE (50mV/DIV) VOLTAGE (1V/DIV) 06741-050 OUTPUT VOLTAGE (1V/DIV) OUTPUT VOLTAGE (5V/DIV) 06741-051 06741-052 AD8538/AD8539 1k AD8539 AD8539 V = ±2.5V V = ±2.5V SY SY A = 1 V INPUT VOLTAGE R = 10kΩ L OUTPUT 100 VOLTAGE 10 TIME (200µs/DIV) 100 1k 10k 100k FREQUENCY (Hz) Figure 52. AD8539 Voltage Noise Density Figure 54. AD8539 No Phase Reversal 0.8 0 AD8539 AD8539 V = 5V SY V = ±2.5V 0.6 –20 SY A = 1M V 0.4 –40 –60 0.2 0 –80 –100 –0.2 –120 –0.4 –0.6 –140 –160 –0.8 100 1k 10k 100k –5 –4 –3 –2 –1 0 1 2 3 4 5 FREQUENCY (Hz) TIME (1s/DIV) Figure 53. AD8539 0.1 Hz to 10 Hz Input Voltage Noise Figure 55. AD8539 Channel Separation vs. Frequency Rev. A | Page 17 of 24 VOLTAGE NOISE DENSITY (nV Hz) VOLTAGE (200mV/DIV) 06741-054 06741-053 CHANNEL SEPARATION (dB) VOLTAGE (2V/DIV) 06741-055 06741-056 AD8538/AD8539 V = 2.7 V or ±1.35 V, T = 25°C, AD8539 only, unless otherwise noted. S A 350 35 AD8539 AD8539 V = 2.7V V = 2.7V SY SY 300 0V < V < 2.7V 30 CM T = 25°C A 250 25 V – V , R = 10kΩ DD OH L 200 20 V , R = 10kΩ OL L 150 15 100 10 V – V , R = 100kΩ DD OH L 50 5 V , R = 100kΩ OL L 0 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 V TEMPERATURE (°C) OS Figure 56. AD8539 Input Offset Voltage Distribution Figure 59. AD8539 Output Saturation Voltage vs. Temperature 45 80 AD8539 AD8539 V = ±1.35V V = ±1.35V 40 SY SY 70 –40°C < T < +125°C R = 2kΩ A L 35 60 30 50 25 40 20 OS+ 30 15 20 10 OS– 10 5 0 0 1 10 100 1k 0 0.016 0.032 0.048 0.064 0.080 0.096 CAPACITANCE (pF) TCV (µV) OS Figure 57. AD8539 Input Offset Voltage Drift Distribution Figure 60. AD8539 Small Signal Overshoot vs. Load Capacitance 20 AD8539 AD8539 V = ±1.35V SY V = 2.7V 15 SY A = 1 V 0V < V < 2.7V CM C = 300pF L T = 25°C A 10 R = 10kΩ L 5 0 –5 –10 –15 –20 TIME (4µs/DIV) 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 V (V) CM Figure 58. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage Figure 61. AD8539 Large Signal Transient Response Rev. A | Page 18 of 24 V (µV) OS NUMBER OF AMPLIFIERS NUMBER OF AMPLIFIERS 06741-058 06741-057 06741-059 OVERSHOOT (%) OUTPUT SATURATION VOLTAGE (mV) VOLTAGE (500mV/DIV) 06741-062 06741-061 06741-060 AD8538/AD8539 1k 0 AD8539 AD8539 V = ±1.35V SY V = ±1.35V –20 SY –40 –60 100 –80 –100 –120 –140 10 –160 100 1k 10k 100k 100 1k 10k 100k FREQUENCY (Hz) FREQUENCY (Hz) Figure 62. AD8539 Voltage Noise Density Figure 63. AD8539 Channel Separation vs. Frequency Rev. A | Page 19 of 24 VOLTAGE NOISE DENSITY (nV/ Hz) 06741-063 CHANNEL SEPARATION (dB) 06741-064 AD8538/AD8539 OUTLINE DIMENSIONS 2.90 BSC 54 1.60 BSC 2.80 BSC 12 3 PIN 1 0.95 BSC 1.90 * 0.90 BSC 0.87 0.84 * 1.00 MAX 0.20 0.08 8° 4° 0.10 MAX 0.50 0.60 SEATING 0° 0.30 PLANE 0.45 0.30 * COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 64. 5-Lead Thin Small Outline Transistor Package [TSOT-23] (UJ-5) Dimensions shown in millimeters 5.00 (0.1968) 4.80 (0.1890) 85 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 0.50 (0.0196) 1.27 (0.0500) 45° BSC 1.75 (0.0688) 0.25 (0.0099) 1.35 (0.0532) 0.25 (0.0098) 8° 0.10 (0.0040) 0° COPLANARITY 0.51 (0.0201) 1.27 (0.0500) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING 0.40 (0.0157) 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 65. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) Rev. A | Page 20 of 24 012407-A AD8538/AD8539 3.20 3.00 2.80 8 5 5.15 3.20 4.90 3.00 4.65 1 2.80 4 PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 0.80 8° 0.15 0.60 0.38 0.23 0° 0.40 0.00 0.22 0.08 COPLANARITY SEATING 0.10 PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 66. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters ORDERING GUIDE Model Temperature Range Package Description Package Option Branding 1 AD8538AUJZ-R2 −40°C to +125°C 5-Lead TSOT-23 UJ-5 A0C 1 AD8538AUJZ-REEL −40°C to +125°C 5-Lead TSOT-23 UJ-5 A0C 1 AD8538AUJZ-REEL7 −40°C to +125°C 5-Lead TSOT-23 UJ-5 A0C 1 AD8538ARZ −40°C to +125°C 8-Lead SOIC_N R-8 1 AD8538ARZ-REEL −40°C to +125°C 8-Lead SOIC_N R-8 1 AD8538ARZ-REEL7 −40°C to +125°C 8-Lead SOIC_N R-8 1 AD8539ARMZ-R2 −40°C to +125°C 8-Lead MSOP RM-8 A1S 1 AD8539ARMZ-REEL −40°C to +125°C 8-Lead MSOP RM-8 A1S 1 AD8539ARZ −40°C to +125°C 8-Lead SOIC_N R-8 1 AD8539ARZ-REEL −40°C to +125°C 8-Lead SOIC_N R-8 1 AD8539ARZ-REEL7 −40°C to +125°C 8-Lead SOIC_N R-8 1 Z = RoHS Compliant Part. Rev. A | Page 21 of 24 AD8538/AD8539 NOTES Rev. A | Page 22 of 24 AD8538/AD8539 NOTES Rev. A | Page 23 of 24 AD8538/AD8539 NOTES ©2005–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06741-0-5/07(A) Rev. A | Page 24 of 24