Low Power, Precision, Auto-Zero Op Amps AD8538/AD8539 Mobile communications Portable instrumentation Battery-powered devices Sensor interfaces Temperature measurement Electronic scales GENERAL DESCRIPTION The AD8538/AD8539 are very high precision amplifiers featuring extremely low offset voltage, low input bias current, and low power consumption. The supply current is less than 215 A maximujm 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). The AD8538/AD8539 operate at very low power making these amplifiers ideal for battery-powered devices and portable equipment. The AD8538/AD8539 are specified over the extended industrial temperature range (-40C to +125C). 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. OUT 1 5 V+ 4 -IN V- 2 +IN 3 TOP VIEW (Not to Scale) 06741-002 AD8538 Figure 1. 5-Lead TSOT-23 (UJ-5) NC 1 -IN 2 AD8538 8 NC 7 V+ +IN 3 V- 6 OUT TOP VIEW 4 (Not to Scale) 5 NC NC = NO CONNECT 06741-001 APPLICATIONS PIN CONFIGURATIONS Figure 2. 8-Lead SOIC_N (R-8) OUT A 1 -IN A 2 AD8539 +IN A 3 TOP VIEW V- 4 (Not to Scale) 8 V+ 7 OUT B 6 -IN B 5 +IN B 06741-033 Low offset voltage: 13 V maximum Input offset drift: 0.03 V/C Single-supply operation: 2.7 V to 5.5 V High gain, CMRR, and PSRR Low input bias current: 25 pA Low supply current: 180 A Figure 3. 8-Lead SOIC_N (R-8) OUT A 1 -IN A 2 +IN A 3 V- 4 AD8539 TOP VIEW (Not to Scale) 8 V+ 7 OUT B 6 -IN B 5 +IN B 06741-034 FEATURES Figure 4. 8-Lead MSOP (RM-8) 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 rights of third parties that may result from its use. Specifications subject to change without notice. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2005-2007 Analog Devices, Inc. All rights reserved. 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 Changes to Specifications Section.................................................. 3 Added Table 3, Renumbered Tables Sequentially ........................ 5 Added Table 4, Renumbered Tables Sequentially ........................ 6 Changes to Thermal Resistance Section........................................ 7 Added Figure 32 and Figure 33..................................................... 13 Added AD8539 Characteristics Section, Renumbered Figures Sequentially ..................................................................................... 14 Updated Outline Dimensions....................................................... 20 Changes to Ordering Guide .......................................................... 21 10/05--Revision 0: Initial Version Rev. A | Page 2 of 24 AD8538/AD8539 SPECIFICATIONS AD8538 ELECTRICAL SPECIFICATIONS @ VS = 5.0 V, VCM = 2.5 V, VO = 2.5 V, TA = 25C, unless otherwise specified. Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Conditions Min VOS Typ Max Unit 5 13 30 25 100 1.0 50 150 5 V V pA pA nA pA pA V dB dB dB dB V/C -40C TA +125C Input Bias Current IB 15 35 0.7 20 -40C TA +85C -40C TA +125C Input Offset Current IOS -40C TA +125C Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time 0.01% Overload Recovery Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density VOH VOL VCM = 0 V to 5 V -40C TA +125C, VCM = 0.2 V to 4.8 V RL = 10 k, VO = 0.1 V to 4.9 V -40C TA +125C -40C TA +125C 0 115 100 115 110 RL = 100 k to ground -40C TA +125C, RL = 100 k to ground RL = 10 k to ground -40C TA +125C, RL = 10 k to ground RL = 100 k to V+ -40C TA +125C, RL = 100 k to V+ RL = 10 k to V+ -40C TA +125C, RL = 10 k to V+ 4.99 4.98 4.95 4.94 VS = 2.7 V to 5.0 V -40C TA +125C IO = 0 -40C TA +125C 105 100 ISY SR tS RL =10 k G = 1, 2 V step, CL = 20 pF, RL = 1 k GBP OM en p-p en 0.1 4.998 4.970 1.9 2.8 17 20 25 ISC PSRR 150 135 141 135 0.03 125 125 150 190 5 7 20 30 180 215 V V V V mV mV mV mV mA dB dB A A RL = 10 k, RL = 100 k, CL = 20 pF 0.4 10 0.05 430 65 V/s s ms kHz Degrees f = 0.1 Hz to 10 Hz f = 1 kHz 2.0 50 V p-p nV/Hz Rev. A | Page 3 of 24 AD8538/AD8539 @ VS = 2.7 V, VCM = 1.35 V, VO = 1.35 V, TA = 25C, unless otherwise specified. Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Conditions Min VOS Typ Max Unit 5 13 30 25 100 1.0 50 150 2.7 V V pA pA nA pA pA V dB dB dB dB V/C -40C TA +125C Input Bias Current IB 15 35 0.7 20 -40C TA +85C -40C TA +125C Input Offset Current IOS -40C TA +125C Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time 0.01% Overload Recovery Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density VOH VOL VCM = 0 V to 2.5 V -40C TA +125C RL = 10 k, VO = 0.1 V to 1.7 V -40C TA +125C -40C TA +125C 0 110 100 110 105 RL = 100 k to ground -40C TA +125C, RL = 100 k to ground RL = 10 k to ground -40C TA +125C, RL = 10 k to ground RL = 100 k to V+ -40C TA +125C, RL = 100 k to V+ RL = 10 k to V+ -40C TA +125C, RL = 10 k to V+ 2.68 2.68 2.67 2.66 VS = 2.7 V to 5.5 V -40C TA +125C IO = 0 -40C TA +125C 105 100 ISY SR tS RL = 10 k G = 1, 1 V step, CL = 20 pF, RL = 1 k GBP OM en p-p en 0.1 2.698 2.68 1.7 2.4 14 20 8 ISC PSRR 140 135 140 135 0.03 125 125 150 190 5 5 20 25 180 215 V V V V mV mV mV mV mA dB dB A A RL = 10 k, RL = 100 k, CL = 20 pF 0.35 5 0.05 430 65 V/s s ms kHz Degrees f = 0.1 Hz to 10 Hz f = 1 kHz 2.0 50 V p-p 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 = 25C, unless otherwise specified. Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Conditions Min VOS Typ Max Unit 5 15 30 60 125 1.0 70 400 5 4.8 V V pA pA nA pA pA V V dB dB dB dB V/C -40C TA +125C Input Bias Current IB 15 35 0.7 20 -40C TA +85C -40C TA +125C Input Offset Current IOS -40C TA +125C Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time 0.01% Overload Recovery Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density VOH VOL -40C TA +125C VCM = 0 V to 5 V -40C TA +125C, VCM = 0.2 V to 4.8 V RL = 10 k, VO = 0.1 V to 4.9 V -40C TA +125C -40C TA +125C 0 0.2 115 100 110 110 RL = 100 k to ground -40C TA +125C, RL = 100 k to ground RL = 10 k to ground -40C TA +125C, RL = 10 k to ground RL = 100 k to V+ -40C TA +125C, RL = 100 k to V+ RL = 10 k to V+ -40C TA +125C, RL = 10 k to V+ 4.99 4.98 4.95 4.94 VS = 2.7 V to 5.0 V -40C TA +125C IO = 0 -40C TA +125C 105 100 ISY SR tS RL =10 k G = 1, 2 V step, CL = 20 pF, RL = 1 k GBP OM en p-p en 0.1 4.994 4.97 5 6 20 24 25 ISC PSRR 135 130 130 125 0.03 125 125 170 7 8 25 30 210 225 V V V V mV mV mV mV mA dB dB A A RL = 10 k, RL = 100 k, CL = 20 pF 0.4 10 0.05 430 65 V/s s ms kHz Degrees f = 0.1 Hz to 10 Hz f = 1 kHz 1.2 52 V p-p nV/Hz Rev. A | Page 5 of 24 AD8538/AD8539 @ VS = 2.7 V, VCM = 1.35 V, VO = 1.35 V, TA = 25C, unless otherwise specified. Table 4. Parameter INPUT CHARACTERISTICS Offset Voltage Symbol Conditions Min VOS Typ Max Unit 5 16 30 25 125 1.0 50 300 2.7 2.5 V V pA pA nA pA pA V -40C TA +125C Input Bias Current IB 15 35 0.7 20 -40C TA +85C -40C TA +125C Input Offset Current IOS -40C TA +125C Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift VOS/T OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time 0.01% Overload Recovery Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density VOH VOL -40C TA +125C VCM = 0 V to 2.7 V -40C TA +125C, VCM = 0.2 V to 2.5 V RL = 10 k, VO = 0.1 V to 2.6 V -40C TA +125C -40C TA +125C 0 0.2 110 100 110 105 RL = 100 k to ground -40C TA +125C, RL = 100 k to ground RL = 10 k to ground -40C TA +125C, RL = 10 k to ground RL = 100 k to V+ -40C TA +125C, RL = 100 k to V+ RL = 10 k to V+ -40C TA +125C, RL = 10 k to V+ 2.68 2.68 2.67 2.66 VS = 2.7 V to 5.5 V -40C TA +125C IO = 0 -40C TA +125C 105 100 ISY SR tS RL = 10 k G = 1, 1 V step, CL = 20 pF, RL = GBP OM en p-p en 0.1 2.693 2.68 5 6 14 20 8 ISC PSRR 130 125 130 125 0.03 7 8 20 25 125 125 210 225 dB dB dB dB V/C V V V V mV mV mV mV mA dB dB A A RL = 10 k, RL = 100 k, CL = 20 pF 0.35 8 0.05 430 65 V/s s ms kHz Degrees f = 0.1 Hz to 10 Hz f = 1 kHz 2.0 55 V p-p nV/Hz Rev. A | Page 6 of 24 AD8538/AD8539 ABSOLUTE MAXIMUM RATINGS TA = 25C, unless otherwise noted. THERMAL RESISTANCE Table 5. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Lead Temperature (Soldering, 60 sec) Operating Temperature Range Junction Temperature Range Rating +6 V VSS - 0.3 V to VDD + 0.3 V 6 V Observe derating curve -65C to +150C 300C -40C to +125C -65C to +150C JA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 6. Thermal Characteristics Package Type 5-Lead TSOT-23 (UJ-5) 8-Lead SOIC_N (R-8) 8-Lead MSOP (RM-8) 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 25C, unless otherwise noted. Rev. A | Page 7 of 24 JA 207 125 145 JC 61 43 45 Unit C/W C/W C/W AD8538/AD8539 TYPICAL PERFORMANCE CHARACTERISTICS AD8538 CHARACTERISTICS AD8538 only, VSY = 5 V or 2.5 V, unless otherwise noted. 400 VSY = 5V AND 2.7V 600 350 INPUT BIAS CURRENT (pA) NUMBER OF AMPLIFIERS 700 VSY = 5V 0V < VCM < 5V TA = 25C 300 250 200 150 100 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 9.2 400 300 200 100 06741-003 50 500 06741-006 450 0 25 45 65 Figure 5. AD8538 Input Offset Voltage Distribution 160 VSY = 5V -40C < TA < +125C TA = 25C 140 SUPPLY CURRENT (A) 8 6 4 0.012 0.024 0.036 0.048 100 80 60 40 20 06741-004 2 120 0 0.060 0.072 0.084 0.096 0 1 TCVOS (V/C) SUPPLY CURRENT (A) 6 4 2 0 -2 -4 VSY = 5V 150 VSY = 2.7V 100 50 -6 06741-005 INPUT OFFSET VOLTAGE (V) 5 4 200 VSY = 5V TA = 25C 8 3 Figure 9. AD8538 Supply Current vs. Supply Voltage Figure 6. AD8538 Input Offset Voltage Drift Distribution 10 2 SUPPLY VOLTAGE (V) -8 -10 0 1 2 3 4 0 -40 5 INPUT COMMON-MODE VOLTAGE (V) 06741-008 NUMBER OF AMPLIFIERS 10 0 125 Figure 8. AD8538 Input Bias Current vs. Temperature 12 0 105 06741-007 14 85 TEMPERATURE (C) INPUT OFFSET VOLTAGE (V) 10 60 110 TEMPERATURE (C) Figure 7. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 8 of 24 Figure 10. AD8538 Supply Current vs. Temperature AD8538/AD8539 70 50 OPEN-LOOP GAIN (dB) VSY - VOH 100 VOL 10 SOURCE 1 30 0.01 0.001 45 20 M 10 0 0 SINK 0.1 90 40 -10 0.01 0.1 1 -20 1k 10 VSY = 2.5V AND 1.35V RL = 100k CL = 20pF 10k 120 30 VSY = 5V AND 2.7V TA = 25C 100 VSY - VOH 25 CMRR (dB) 80 20 VOL 15 60 40 10 -25 -10 5 20 35 50 65 80 95 110 0 100 125 06741-013 20 5 06741-010 OUTPUT SATURATION VOLTAGE (mV) Figure 14. AD8538 Open-Loop Gain and Phase vs. Frequency VSY = 5V RL = 10k 0 -40 1k Figure 12. AD8538 Output Saturation Voltage vs. Temperature 60 1M VSY = 2.5V AND 1.35V TA = 25C 80 AV = 100 +PSRR AV = 10 60 -PSRR 40 AV = 1 20 -20 1k 10k 100k 0 100 1M 06741-014 0 100 VSY = 5V AND 2.7V CL = 20pF RL = 2k PSRR (dB) 20 100k Figure 15. AD8538 CMRR vs. Frequency 06741-011 40 10k FREQUENCY (Hz) TEMPERATURE (C) CLOSED-LOOP GAIN (dB) -45 1M 100k FREQUENCY (Hz) LOAD CURRENT (mA) Figure 11. AD8538 Output Saturation Voltage vs. Load Current 35 OPEN-LOOP PHASE SHIFT (Degrees) 135 60 1000 06741-012 VSY = 5V TA = 25C 06741-009 OUTPUT SATURATION VOLTAGE (mV) 10000 1k 10k 100k FREQUENCY (Hz) FREQUENCY (Hz) Figure 16. AD8538 PSRR vs. Frequency Figure 13. AD8538 Closed-Loop Gain vs. Frequency Rev. A | Page 9 of 24 1M AD8538/AD8539 1000 VOLTAGE (1V/DIV) AV = 100 100 OUTPUT IMPEDANCE () VSY = 5V AV = 1 CL = 300pF RL = 10k VSY = 5V AND 2.7V AV = 10 10 AV = 1 1 06741-022 0.01 100 06741-017 0.1 1k 10k 100k 1M TIME (4s/DIV) FREQUENCY (Hz) Figure 20. AD8538 Large Signal Transient Response Figure 17. AD8538 Closed-Loop Output Impedance vs. Frequency VSY = 5V TA = 25C RL = 2k VSY = 5V AV = -50 VIN (mV) 50 100 40 0 30 OS+ 0 1 10 100 06741-018 OS- 10 0 VOUT (V) 20 06741-015 SMALL SIGNAL OVERSHOOT (%) 60 -2.5 1000 TIME (10s/DIV) LOAD CAPACITANCE (pF) Figure 21. AD8538 Positive Overload Recovery Figure 18. AD8538 Small Signal Overshoot vs. Load Capacitance VSY = 5V AND 2.7V AV = 1 CL = 300pF RL = 2k VSY = 5V AV = -50 VOLTAGE (50mV/DIV) VIN (mV) 0 -100 VOUT (V) 2.5 06741-019 06741-016 0 TIME (10s/DIV) TIME (4s/DIV) Figure 22. AD8538 Negative Overload Recovery Figure 19. AD8538 Small Signal Transient Response Rev. A | Page 10 of 24 AD8538/AD8539 VSY = 5V TA = 25C 100 10 10 100 1k 10k VOUT VSY = 5V AV = 1 VIN = 6V p-p RL = 10k 06741-023 VOLTAGE (1V/DIV) VIN 06741-021 VOLTAGE NOISE DENSITY (nV/Hz) 1000 TIME (200s/DIV) FREQUENCY (Hz) Figure 25. AD8538 No Phase Reversal Figure 23. AD8538 Voltage Noise Density 06741-020 VOLTAGE (500nV/DIV) VSY = 5V AND 2.7V TIME (1s/DIV) Figure 24. AD8538 0.1 Hz to 10 Hz Input Voltage Noise Rev. A | Page 11 of 24 AD8538/AD8539 VSY = 2.7 V or 1.35 V, AD8538 only, unless otherwise noted. 10000 120 100 80 60 40 20 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 06741-024 NUMBER OF AMPLIFIERS 140 VSY = 2.7V TA = 25C 1000 100 10 SOURCE SINK 1 06741-027 160 OUTPUT SATURATION VOLTAGE (mV) VSY = 2.7V 0V < VCM < 2.7V TA = 25C 0.1 0.001 0.01 Figure 29. AD8538 Output Saturation Voltage vs. Load Current 35 30 NUMBER OF AMPLIFIERS OUTPUT SATURATION VOLTAGE (mV) VSY = 2.7V -40C < TA < +125C 25 20 15 10 0 06741-025 5 0 VSY = 2.7V RL = 10k 25 VSY = VOH 20 15 VOL 10 5 0 -40 0.012 0.024 0.036 0.048 0.060 0.072 0.084 0.096 06741-028 Figure 26. AD8538 Input Offset Voltage Distribution 30 -25 -10 TCVOS (V/C) 35 50 65 80 95 110 125 80 SMALL SIGNAL OVERSHOOT (%) VSY = 2.7V 8 TA = 25C 6 4 2 0 -2 -4 -6 -8 0.5 1.0 1.5 2.0 VSY = 2.7V TA = 25C 70 RL = 2k 60 50 40 30 20 OS+ 10 06741-026 INPUT OFFSET VOLTAGE (V) 20 Figure 30. AD8538 Output Saturation Voltage vs. Temperature 10 0 5 TEMPERATURE (C) Figure 27. AD8538 Input Offset Voltage Drift Distribution -10 1 0.1 LOAD CURRENT (mA) INPUT OFFSET VOLTAGE (V) 0 2.5 06741-029 180 OS- 1 10 100 1000 LOAD CAPACITANCE (pF) INPUT COMMON-MODE VOLTAGE (V) Figure 28. AD8538 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 12 of 24 Figure 31. AD8538 Small Signal Overshoot vs. Load Capacitance AD8538/AD8539 1000 VSY = 2.7V TA = 25C 100 10 10 TIME (4s/DIV) 06741-032 06741-030 VOLTAGE (500mV/DIV) VOLTAGE NOISE DENSITY (nV/Hz) VSY = 2.7V AV = 1 CL = 100pF RL = 10k 100 1k 10k FREQUENCY (Hz) Figure 32. AD8538 Large Signal Transient Response Figure 33. AD8538 Voltage Noise Density Rev. A | Page 13 of 24 100k AD8538/AD8539 AD8539 CHARACTERISTICS AD8539 only, VS = 5 V or 2.5 V, unless otherwise noted. 800 600 AD8539 VSY = 5V 100.0 INPUT BIAS CURRENT (pA) 700 NUMBER OF AMPLIFIERS 1000.0 AD8539 VSY = 5V 0 < VCM < 5V TA = 25C 500 400 300 200 10.0 1.0 0.1 0.01 06741-035 0 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 VOS (V) Figure 34. AD8539 Input Offset Voltage Distribution 25 45 65 85 TEMPERATURE (C) 105 125 Figure 37. AD8539 Input Bias Current vs. Temperature 60 400 AD8539 VSY = 2.5V -40C < VCM < 125C 50 AD8539 VSY = 0V TO 5V -40C < TA < +125C 350 +125C 300 40 +85C +25C 250 ISY (A) 30 -40C 200 150 20 100 10 50 0 0.016 0.032 0.048 0.064 TCVOS (V) 0.080 0 06741-036 0 0.096 Figure 35. AD8539 Input Offset Voltage Drift Distribution 0.5 1.0 1.5 2.0 2.5 VSY (V) 3.0 3.5 4.0 4.5 5.0 Figure 38. AD8539 Supply Current vs. Supply Voltage 20 400 AD8539 VSY = 5V 0V < VCM < 5V TA = 25C 10 0 06741-039 NUMBER OF AMPLIFIERS 5 06741-038 100 AD8539 375 350 ISY (A) VOS (V) 325 0 VSY = 2.5V 300 275 -10 VSY = 1.35V 250 0 1 2 3 VCM (V) 4 5 200 -40 06741-037 -20 Figure 36. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 14 of 24 -25 -10 5 20 35 50 65 TEMPERATURE (C) 80 95 110 Figure 39. AD8539 Supply Current vs. Temperature 125 06741-040 225 SOURCE, VS = 2.5V 1000 100 GAIN (Degrees) SINK, VS = 1.35V SOURCE, VS = 1.35V SINK, VS = 2.5V 10 120 120 100 100 80 80 60 60 40 40 20 20 0 0 -20 -20 -40 -40 -60 1 -100 0.1 0.001 0.01 0.1 1 ILOAD (mA) 10 100 -120 1k Figure 40. AD8539 Output Saturation Voltage vs. Load Current 30 -100 10k 100k FREQUENCY (Hz) -120 10M 1M 140 AD8539 VS = 5V AD8539 VSY = 2.5V CHANNEL B 120 VDD - VOH, IL = 250A, RL = 10k 100 25 CMRR (dB) CHANNEL A 20 VOL, IL = 250A, RL = 10k 15 10 80 60 40 VDD - VOH, IL = 25A, RL = 100k 5 -25 -10 5 20 35 50 65 TEMPERATURE (C) 80 95 110 125 0 100 1k 10k 100k FREQUENCY (Hz) 60 120 AD8539 VSY = 2.5V RL = 2k CL = 20pF 40 10M Figure 44. AD8539 CMRR vs. Frequency Figure 41. AD8539 Output Saturation Voltage vs. Temperature AV = 100 1M 06741-045 20 VOL, IL = 25A, RL = 100k 0 -40 AD8539 VSY = 2.5V 100 PSRR- 80 AV = 10 PSRR (dB) 20 AV = 1 0 PSRR+ 60 40 20 -20 -40 100 1k 10k 100k FREQUENCY (Hz) 1M 10M -20 100 1k 10k 100k FREQUENCY (Hz) 1M Figure 45. AD8539 PSRR vs. Frequency Figure 42. AD8539 Closed-Loop Gain vs. Frequency Rev. A | Page 15 of 24 10M 06741-046 0 06741-043 CLOSED-LOOP GAIN (dB) -80 Figure 43. AD8539 Open-Loop Gain and Phase vs. Frequency 06741-042 OUTPUT SATURATION VOLTAGE (mV) 35 -60 AD8539 VSY = 2.5V RL = 2k CL = 20pF -80 06741-044 AD8539 06741-041 OUTPUT SATURATION VOLTAGE (mV) 10000 PHASE (Degrees) AD8538/AD8539 AD8538/AD8539 1000 AD8539 VSY = 5V AV = 1 CL = 300pF RL = 10k AD8539 VSY = 2.5V 900 800 VOLTAGE (1V/DIV) 700 ZOUT () 600 500 400 300 AV = 10 AV = 1 10k 100k FREQUENCY (Hz) 1M 10M TIME (4s/DIV) Figure 46. AD8539 Closed-Loop Output Impedance vs. Frequency Figure 49. AD8539 Large Signal Transient Response 60 INPUT VOLTAGE (50mV/DIV) 30 OS+ 20 OS- 0.05 4 3 INPUT VOLTAGE 0 2 -0.05 1 -0.10 0 -1 -0.15 OUTPUT VOLTAGE -2 -0.20 10 100 CAPACITANCE (pF) 1k -0.25 06741-048 1 -3 TIME (20s/DIV) Figure 50. AD8539 Positive Overload Recovery Figure 47. AD8539 Small Signal Overshoot vs. Load Capacitance INPUT VOLTAGE (50mV/DIV) AD8539 VSY = 5V AV = 1 CL = 300pF RL = 2k 06741-051 10 0.05 7.5 0 6.5 -0.05 INPUT VOLTAGE AD8539 VSY = 2.5V AV = -50 -0.10 5.5 4.5 -0.15 3.5 -0.20 2.5 -0.25 1.5 OUTPUT VOLTAGE (5V/DIV) OUTPUT VOLTAGE TIME (2s/DIV) 06741-049 -0.30 -0.35 Figure 48. AD8539 Small Signal Transient Response 0.5 TIME (20s/DIV) Figure 51. AD8539 Negative Overload Recovery Rev. A | Page 16 of 24 -0.5 06741-052 OVERSHOOT (%) AD8539 VSY = 2.5V AV = -50 0.10 40 VOLTAGE (50mV/DIV) 5 0.15 AD8539 VSY = 2.5V RL = 2k 50 0 06741-050 1k 06741-047 100 0.01 100 OUTPUT VOLTAGE (1V/DIV) AV = 100 200 AD8538/AD8539 VOLTAGE (2V/DIV) INPUT VOLTAGE 1k 10k FREQUENCY (Hz) 100k OUTPUT VOLTAGE TIME (200s/DIV) Figure 52. AD8539 Voltage Noise Density 06741-055 100 10 100 Figure 54. AD8539 No Phase Reversal 0.8 0 AD8539 VSY = 5V AV = 1M AD8539 VSY = 2.5V -20 CHANNEL SEPARATION (dB) 0.6 0.4 0.2 0 -0.2 -0.4 -40 -60 -80 -100 -120 -0.8 -5 -4 -3 -2 -1 0 1 TIME (1s/DIV) 2 3 4 5 -160 100 1k 10k FREQUENCY (Hz) Figure 55. AD8539 Channel Separation vs. Frequency Figure 53. AD8539 0.1 Hz to 10 Hz Input Voltage Noise Rev. A | Page 17 of 24 100k 06741-056 -140 -0.6 06741-054 VOLTAGE (200mV/DIV) AD8539 VSY = 2.5V AV = 1 RL = 10k AD8539 VSY = 2.5V 06741-053 VOLTAGE NOISE DENSITY (nV Hz) 1k AD8538/AD8539 VS = 2.7 V or 1.35 V, TA = 25C, AD8539 only, unless otherwise noted. OUTPUT SATURATION VOLTAGE (mV) 300 250 200 150 100 50 25 VDD - VOH, RL = 10k 20 VOL, RL = 10k 15 10 VDD - VOH, RL = 100k 5 VOL, RL = 100k 0 -40 Figure 56. AD8539 Input Offset Voltage Distribution -25 -10 5 20 35 50 65 80 TEMPERATURE (C) 110 125 80 AD8539 VSY = 1.35V -40C < TA < +125C 40 AD8539 VSY = 1.35V RL = 2k 70 35 60 OVERSHOOT (%) 30 25 20 15 50 40 OS+ 30 20 10 OS- 10 5 0 0.016 0.032 0.048 0.064 TCVOS (V) 0.080 0 06741-058 0 0.096 Figure 57. AD8539 Input Offset Voltage Drift Distribution 1 10 100 CAPACITANCE (pF) 10 AD8539 VSY = 1.35V AV = 1 CL = 300pF RL = 10k VOLTAGE (500mV/DIV) AD8539 VSY = 2.7V 0V < VCM < 2.7V TA = 25C 15 1k Figure 60. AD8539 Small Signal Overshoot vs. Load Capacitance 20 5 VOS (V) 95 Figure 59. AD8539 Output Saturation Voltage vs. Temperature 45 NUMBER OF AMPLIFIERS 30 06741-057 0 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 VOS AD8539 VSY = 2.7V 0 -5 -10 0.3 0.6 0.9 1.2 1.5 VCM (V) 1.8 2.1 2.4 2.7 TIME (4s/DIV) Figure 58. AD8539 Input Offset Voltage vs. Input Common-Mode Voltage Rev. A | Page 18 of 24 Figure 61. AD8539 Large Signal Transient Response 06741-062 0 06741-059 -15 -20 06741-061 NUMBER OF AMPLIFIERS 35 AD8539 VSY = 2.7V 0V < VCM < 2.7V TA = 25C 06741-060 350 AD8538/AD8539 0 AD8539 VSY = 1.35V AD8539 VSY = 1.35V CHANNEL SEPARATION (dB) -20 100 -40 -60 -80 -100 -120 10 100 1k 10k FREQUENCY (Hz) 100k -160 100 Figure 62. AD8539 Voltage Noise Density 1k 10k FREQUENCY (Hz) Figure 63. AD8539 Channel Separation vs. Frequency Rev. A | Page 19 of 24 100k 06741-064 -140 06741-063 VOLTAGE NOISE DENSITY (nV/ Hz) 1k AD8538/AD8539 OUTLINE DIMENSIONS 2.90 BSC 5 4 2.80 BSC 1.60 BSC 1 2 3 PIN 1 0.95 BSC 1.90 BSC *0.90 0.87 0.84 *1.00 MAX 0.10 MAX 0.50 0.30 0.20 0.08 8 4 0 SEATING PLANE 0.60 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) 8 1 5 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-012-A A 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 4.00 (0.1574) 3.80 (0.1497) AD8538/AD8539 3.20 3.00 2.80 8 3.20 3.00 2.80 1 5 5.15 4.90 4.65 4 PIN 1 0.65 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.38 0.22 COPLANARITY 0.10 0.23 0.08 8 0 0.80 0.60 0.40 SEATING 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 AD8538AUJZ-R2 1 AD8538AUJZ-REEL1 AD8538AUJZ-REEL71 AD8538ARZ1 AD8538ARZ-REEL1 AD8538ARZ-REEL71 AD8539ARMZ-R21 AD8539ARMZ-REEL1 AD8539ARZ1 AD8539ARZ-REEL1 AD8539ARZ-REEL71 1 Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Package Description 5-Lead TSOT-23 5-Lead TSOT-23 5-Lead TSOT-23 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead MSOP 8-Lead MSOP 8-Lead SOIC_N 8-Lead SOIC_N 8-Lead SOIC_N Z = RoHS Compliant Part. Rev. A | Page 21 of 24 Package Option UJ-5 UJ-5 UJ-5 R-8 R-8 R-8 RM-8 RM-8 R-8 R-8 R-8 Branding A0C A0C A0C A1S A1S AD8538/AD8539 NOTES Rev. A | Page 22 of 24 AD8538/AD8539 NOTES Rev. A | Page 23 of 24 AD8538/AD8539 NOTES (c)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