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130 V Maximum Offset Voltage Op Amp in TSOT AD8677
FEATURES
Low offset voltage: 130 V max Input offset drift: 1.5 V/C max Low noise: 0.25 V p-p High gain, CMRR and PSRR: 115 dB min Low supply current: 1.1 mA Wide supply voltage range: 4 V to 18 V operation
PIN CONFIGURATIONS
OUT
1 5
V+
V- 2 +IN 3
AD8677
4
-IN
Figure 1. 5-Lead TSOT (UJ-5)
NULL
1
8
NULL V+ OUT
05578-002
APPLICATIONS
Medical and industrial instrumentation Sensors and controls Thermocouple RTDs Strain bridges Shunt current measurements Precision filters
-IN 2 +IN 3 V- 4
AD8677
TOP VIEW (Not to Scale)
7 6 5
NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC_N (R-8)
GENERAL DESCRIPTION
The AD8677 is the next generation of precision, ultralow offset amplifiers. It builds on the high performance of the OP07 and integrates lower power (1.1 mA typical), lower input bias current (1 nA maximum), and higher CMRR/PSRR (130 dB) in the small TSOT package. Operation is fully specified from 5 V to 15 V supply. The AD8677 provides higher accuracy than industry-standard OP07-type amplifiers due to Analog Devices' iPolarTM process, which supports enhanced performance in a smaller footprint. These performance enhancements include wider output swing, lower power, and higher CMRR (common-mode rejection ratio) and PSRR (power supply rejection ratio). The AD8677 maintains stability of offsets and gain virtually regardless of variations in time or temperature. Excellent linearity and gain accuracy can be maintained at high closed-loop gains. The AD8677 is fully specified over the extended industrial temperature range of -40C to +125C. The AD8677 amplifier is available in the tiny, 5-lead TSOT and the popular 8-lead, narrow SOIC lead-free packages.
Rev. 0
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 Analog Devices, Inc. All rights reserved.
05578-001
TOP VIEW (Not to Scale)
AD8677 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings ............................................................5 Thermal Resistance .......................................................................5 ESD Caution...................................................................................5 Typical Performance Characteristics ..............................................6 Outline Dimensions ....................................................................... 13 Ordering Guide .......................................................................... 13
REVISION HISTORY
11/05--Revision 0: Initial Version
Rev. 0 | Page 2 of 16
AD8677 SPECIFICATIONS
VS = 5.0 V, TA = +25C, unless otherwise specified. Table 1.
Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Open-Loop Gain Symbol VOS -40C TA +125C IB -40C TA +125C IOS -40C TA +125C CMRR AVO VOS/T OUTPUT CHARACTERISTICS Output Voltage Swing VOUT VCM = 3 V -40C TA +125C RL = 2 k to ground, VO = 3 V -40C TA +125C -40C TA +125C RL = 10 k to ground -40C TA +125C RL = 2 k to ground -40C TA +125C VO = 3.5 V VS = 4.0 V to 18.0 V -40C TA +125C VO = 0 V -40C TA +125C RL = 10 k 115 110 -3.5 120 120 1000 1000 127 10000 0.5 3.95 3.95 3.9 3.9 4.1 4 27 15 130 1.1 1.25 1.7 1.4 0.1 0.2 Test Conditions/Comments Min Typ 40 Max 130 350 1 1 1 1 +3.5 Unit V V nA nA nA nA V dB dB V/mV V/mV V/C V V V V mA mA dB dB mA mA V/s MHz Degrees V p-p nV/Hz pA/Hz
Short-Circuit Limit Output Current POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density
ISC IO PSRR ISY
SR GBP
0.2 0.6 80 0.28 10 0.074
en p-p en in
0.1 Hz to 10 Hz f = 1 kHz f = 1 kHz
Rev. 0 | Page 3 of 16
AD8677
VS = 15 V, TA = +25C, unless otherwise specified. Table 2.
Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Open Loop Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage Swing Symbol VOS -40C TA +125C IB -40C TA +125C IOS -40C TA +125C CMRR AVO VOS/T VOUT VCM = 13.0 V -40C TA +125C RL = 2 k to ground, VO = 11 V -40C TA +125C -40C TA +125C RL = 10 k to ground -40C TA +125C RL = 2 k to ground -40C TA +125C VO = 13.5 V VS = 4.0 V to 18.0 V -40C TA +125C VO = 0 V -40C TA +125C RL = 10 k 115 110 -13.5 120 120 1000 1000 140 10000 0.5 13.95 13.9 13.75 13.7 14 13.8 30 15 130 1.1 1.3 1.8 1.5 0.2 0.2 Test Conditions/Comments Min Typ 45 Max 130 350 1 1 1 1 +13.5 Unit V V nA nA nA nA V dB dB V/mV V/mV V/C V V V V mA mA dB dB mA mA V/s MHz Degrees V p-p nV/Hz pA/Hz
Short Circuit Limit Output Current POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density
ISC IO PSRR ISY
SR GBP
0.2 0.6 80 0.25 10 0.074
en p-p en in
0.1 Hz to 10 Hz f = 1 kHz f = 1 kHz
Rev. 0 | Page 4 of 16
AD8677 ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range UJ-5, R Package Operating Temperature Range Junction Temperature Range RM, R Package Lead Temperature (Soldering, 10 sec) Value 18 V V Supply 0.7 V Indefinite -65C to +150C -40C to +125C -65C to +150C +300C
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.
THERMAL RESISTANCE
JA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 4.
Package Type 5-Lead TSOT (UJ-5) 8-Lead SOIC (R-8) JA 207 158 JC 61 43 Unit C/W C/W
ESD CAUTION
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 this product 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. 0 | Page 5 of 16
AD8677 TYPICAL PERFORMANCE CHARACTERISTICS
50 45 40
NUMBER OF AMPLIFIERS
45 VS = 15V 40 35 30 25 20 15 10
VS = 15V
35 30 25 20 15 10
05578-003
NUMBER OF AMPLIFIERS
5 0 -100 -80 -60 -40 -20 0 20 40 60 80 100
0
0
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
VOS (V)
TCVOS (V/C)
Figure 3. Input Offset Voltage Distribution
40 VS = 5V 35
Figure 6. TCVOS vs. Number of Amplifiers
200 VS = 15V 150 100 50
VOS (V)
NUMBER OF AMPLIFIERS
30 25 20 15 10
05578-004
0 -50 -100
05578-005
5 0
-150 -200 -50
-100 -80
-60
-40
-20
0 VOS (V)
20
40
60
80
100
0
50 TEMPERATURE (C)
100
150
Figure 4. Input Offset Voltage Distribution
50 VS = 5V 40
NUMBER OF AMPLIFIERS
Figure 7. Offset Voltage vs. Temperature
200 VS = 5V 150 100
30
VOS (V)
50 0 -50 -100
05578-047
05578-006
20
10
-150 -200 -50
0
0
0.15
0.30
0.45
0.60
0.75
0.90
1.05
0
50 TEMPERATURE (C)
100
150
TCVOS (V/C)
Figure 5. TCVOS vs. Number of Amplifiers
Figure 8. Offset Voltage vs. Temperature
Rev. 0 | Page 6 of 16
05578-048
5
AD8677
1.6 -13.92 -13.94 1.4 VS = 15V 1.2
ISY (mA)
VS = 15V RL = 10k
-13.96 -13.98
VOL (V)
05578-007
1.0
VS = 5V
-14.00 -14.02 -14.04 -14.06
0.8
0.6
05578-011
-14.08 -14.10 -50
0.4 -50
0
50 TEMPERATURE (C)
100
150
0
50 TEMPERATURE (C)
100
150
Figure 9. Supply Current vs. Temperature
14.40 VS = 15V RL = 10k 14.35 -4.02 14.30
VOH (V)
Figure 12. -VOUT vs. Temperature
-3.98 -4.00 VS = 5V RL = 10k
-4.04
VOL (V)
05578-009
-4.06 -4.08 -4.10 -4.12
14.25
14.20
14.15
05578-012
-4.14 -4.16 -50
14.10 -50
0
50 TEMPERATURE (C)
100
150
0
50 TEMPERATURE (C)
100
150
Figure 10. +VOUT vs. Temperature
4.45 VS = 5V RL = 10k 4.40
-0.1 0
Figure 13. -VOUT vs. Temperature
VS = 15V
4.35
-0.2
VOH (V)
4.30
IB (nA)
-0.3 -0.4
05578-010
4.25
4.20
4.15 -50
0
50 TEMPERATURE (C)
100
150
-0.5 -50
0
50 TEMPERATURE (C)
100
150
Figure 11. +VOUT vs. Temperature
Figure 14. Input Bias Current vs. Temperature
Rev. 0 | Page 7 of 16
05578-013
AD8677
0 VS = 5V -0.05 -0.10 -0.15 -0.20 -0.25 -0.30
05578-014 05578-019
150 VS = 4V TO 18V
140
PSRR (dB)
130 0 50 TEMPERATURE (C) 100 150 120 -50
IB (nA)
-0.35 -0.40 -50
0
50 TEMPERATURE (C)
100
150
Figure 15. Input Bias Current vs. Temperature
146 144 142 140 138 30 VS = 15V 40
Figure 18. PSRR vs. Temperature
VS = 15V
CMRR (dB)
134 134 132 130 128 126 124 -50 0 VS = 5V
ISC (mA)
VS = 5V 20
05578-015
50 TEMPERATURE (C)
100
150
10 -50
0
50 TEMPERATURE (C)
100
150
Figure 16. CMRR vs. Temperature
16000 RL = 2k 14000 VS = 15V 1.2 1.4
Figure 19. Short Circuit Current vs. Temperature
10000 8000 VS = 5V 6000 4000 2000 -50
SUPPLY CURRENT (mA)
12000
1.0 0.8 0.6 0.4 0.2 0
AVO (V/mV)
05578-017
0
50 TEMPERATURE (C)
100
150
0
10
20 SUPPLY VOLTAGE (V)
30
40
Figure 17. Open-Loop Gain vs. Temperature
Figure 20. Supply Current vs. Total Supply Voltages
Rev. 0 | Page 8 of 16
05578-022
05578-020
AD8677
10
50
VS = 15V VOH = +VOUT
40 G = +100
VS = 15V VIN = 28mV RL = CL = 20pF
CLOSED-LOOP GAIN (dB)
30 G = +10
VSY - VOUT (V)
1
VOL = -VOUT
20
10 G = +1
05578-026
0
05578-023
0.1 0.01
0.1
1 ILOAD (mA)
10
100
-10 100
1k
10k FREQUENCY (Hz)
100k
1M
Figure 21. Output Voltage Swing vs. Load Current
10 VS = 5V
50
Figure 24. Closed-Loop Gain vs. Frequency
VS = 5V VIN = 28mV RL = CL = 20pF
40
G = +100
CLOSED-LOOP GAIN (dB)
30 G = +10
VSY - VOUT (V)
VOL = -VOUT 1 VOH = +VOUT
20
10 G = +1
05578-027
0
05578-024
0.1 0.01
0.1
1 ILOAD (mA)
10
100
-10 100
1k
10k FREQUENCY (Hz)
100k
1M
Figure 22. Output Voltage Swing vs. Load Current
100 80 PHASE 60 40
GAIN
Figure 25. Closed-Loop Gain vs. Frequency
100
30 VS = 15V VIN = 50mV G = +1 -OS +OS
80
PHASE MARGIN (Degrees)
25
60
OVERSHOOT (%)
20
15
20 GAIN 0 -20 VS = 15V RL = CL = 20pF m = 80 Degrees 1k 10k 100k 1M FREQUENCY (Hz)
40
10
20
05578-025
5
05578-028
-40 100
0 10M
0
0
2
4
6 CLOAD (nF)
8
10
12
Figure 23. Open-Loop Gain and Phase vs. Frequency
Figure 26. Overshoot vs. Capacitive Load
Rev. 0 | Page 9 of 16
AD8677
30 VS = 5V VIN = 50mV G = +1 100 -OS +OS VS = 15V VIN = 28mV RL = CL = 20pF
25
10
G = +100
OVERSHOOT (%)
20
ROUT ()
15
1
G = +10 G = +1
10 0.1 5
05578-029 05578-032
0
0
2
4
6 CLOAD (nF)
8
10
12
0.01 10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 27. Overshoot vs. Capacitive Load
112 110 108 106 10 100 VS = 15V
Figure 30. Output Impedance vs. Frequency
VS = 5V VIN = 28mV RL = CL = 20pF
G = +100
CMRR (dB)
ROUT ()
104 102 100
05578-030
1
G = +10 G = +1
0.1
05578-033
98 96 100
1k
10k FREQUENCY (Hz)
100k
1M
0.01 10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 28. CMRR vs. Frequency
100 -PSRR 80 100
Figure 31. Output Impedance vs. Frequency
VS = 15V
PSRR (dB)
60
VOLTAGE NOISE DENSITY (nV/ Hz)
05578-031
10
40 +PSRR 20
0 10
100
1k
10k
100k
1M
1 0.1
1
10 FREQUENCY (Hz)
100
1k
FREQUENCY (Hz)
Figure 29. PSRR vs. Frequency
Figure 32. Voltage Noise Density vs. Frequency
Rev. 0 | Page 10 of 16
05578-034
AD8677
10 VS = 15V
1
OUTPUT VOLTAGE (1V/DIV)
VS = 5V CL = 1nF G = +1 VIN = 4V p-p
in (pA/ Hz)
2
0.1
05578-035
0.01 0.1
1
10 FREQUENCY (Hz)
100
1k
TIME (100s/DIV)
Figure 33. Current Noise Density vs. Frequency
400mV 200mV
Figure 36. Large Signal Transient
OUTPUT VOLTAGE (100mV/DIV)
VS = 5V AND 15V CL = 1nF G = +1 VIN = 100mV p-p
VIN 0V -200mV
VS = 15V VIN = 200mV G = -100 RECOVERY = 1s
2
0V -5V -10V
05578-036
VOUT
TIME (100s/DIV)
-20V TIME (10s/DIV)
Figure 34. Small Signal Transient
VS = 15V CL = 1nF G = +1 VIN = 4V p-p 400mV 200mV
Figure 37. Positive Overload Recovery
VS = 15V VIN = 200mV G = -100 RECOVERY = 5s
OUTPUT VOLTAGE (1V/DIV)
VIN 0V -200mV
2
15V 10V 5V
05578-038 05578-041
VOUT
0V -5V TIME (10s/DIV)
TIME (100s/DIV)
Figure 35. Large Signal Transient
Figure 38. Negative Overload Recovery
Rev. 0 | Page 11 of 16
05578-040
-15V
05578-039
AD8677
1200mV 600mV VIN 0V -600mV 0V -2V -4V
05578-042
VOLTAGE NOISE (0.2V/DIV)
VS = 5V VIN = 600mV G = -10 RECOVERY = 2.4s
VS = 15V VN p-p = 0.24V
1
VOUT
-8V TIME (4s/DIV)
TIME (1s/DIV)
Figure 39. Positive Overload Recovery
1200mV 600mV 0V -600mV 4V 2V 0V
05578-043
Figure 42. Voltage Noise (0.1 Hz to 10 Hz)
20k V+
VIN
VS = 5V VIN = 600mV G = -10 RECOVERY = 5.6s
1
- INPUT +
2
-
8 7 5
AD8677
3
OUTPUT
+
4
VOS TRIM RANGE IS TYPICALLY 3.5mV
05578-049
V-
VOUT
Figure 43. Optional Offset Nulling Circuit
-2V -4V TIME (4s/DIV)
Figure 40. Negative Overload Recovery
VS = 5V VIN = 5.7V VIN
VOUT
2
TIME (400s/DIV)
Figure 41. No Phase Reversal
05578-044
Rev. 0 | Page 12 of 16
05578-045
-6V
AD8677 OUTLINE DIMENSIONS
2.90 BSC
5 4
1.60 BSC
1 2 3
2.80 BSC
5.00 (0.1968) 4.80 (0.1890)
8 5
PIN 1 0.95 BSC *0.90 0.87 0.84 1.90 BSC
4.00 (0.1574) 3.80 (0.1497) 1
6.20 (0.2440)
4 5.80 (0.2284)
1.27 (0.0500) BSC *1.00 MAX 0.25 (0.0098) 0.10 (0.0040) 8 4 0
1.75 (0.0688) 1.35 (0.0532)
0.50 (0.0196) x 45 0.25 (0.0099)
0.20 0.08 0.60 0.45 0.30
0.10 MAX
0.50 0.30
SEATING PLANE
0.51 (0.0201) COPLANARITY SEATING 0.31 (0.0122) 0.10 PLANE
8 0.25 (0.0098) 0 1.27 (0.0500) 0.40 (0.0157) 0.17 (0.0067)
*COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS.
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 44. 5-Lead Thin Small Outline Transistor Package [TSOT] (UJ-5) Dimensions shown in millimeters
Figure 45. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model AD8677ARZ 1 AD8677ARZ-REEL1 AD8677ARZ-REEL71 AD8677AUJZ-R21 AD8677AUJZ-REEL1 AD8677AUJZ-REEL71
1
Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C
Package Description 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Standard Small Outline Package [SOIC_N] 5-Lead Thin Small Outline Transistor Package [TSOT] 5-Lead Thin Small Outline Transistor Package [TSOT] 5-Lead Thin Small Outline Transistor Package [TSOT]
Package Option R-8 R-8 R-8 UJ-5 UJ-5 UJ-5
Branding
A0E A0E A0E
Z = Pb-free part.
Rev. 0 | Page 13 of 16
AD8677 NOTES
Rev. 0 | Page 14 of 16
AD8677 NOTES
Rev. 0 | Page 15 of 16
AD8677 NOTES
(c) 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05578-0-11/05(0)
Rev. 0 | Page 16 of 16

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