130 μV Maximum Offset Voltage
Op Amp in TSOT
AD8677
OUT
Medical and industrial instrumentation
Sensors and controls
Thermocouple
RTDs
Strain bridges
Shunt current measurements
Precision filters
5
V+
4
–IN
AD8677
V– 2
TOP VIEW
(Not to Scale)
+IN 3
Figure 1. 5-Lead TSOT (UJ-5)
NULL
APPLICATIONS
1
05578-001
Low offset voltage: 130 μV max
Input offset drift: 1.5 μV/°C max
Low noise: 0.25 μV 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
8
NULL
–IN 2
AD8677
7
V+
+IN 3
TOP VIEW
(Not to Scale)
6
OUT
5
NC
1
V– 4
NC = NO CONNECT
05578-002
FEATURES
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’ iPolar™ 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 −40°C to +125°C. The AD8677 amplifier is
available in the tiny, 5-lead TSOT and the popular 8-lead,
narrow SOIC lead-free packages.
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 © 2005-2011 Analog Devices, Inc. All rights reserved.
AD8677
TABLE OF CONTENTS
Features .............................................................................................. 1 Absolute Maximum Ratings ............................................................5 Applications....................................................................................... 1 Thermal Resistance .......................................................................5 General Description ......................................................................... 1 ESD Caution...................................................................................5 Pin Configurations ........................................................................... 1 Typical Performance Characteristics ..............................................6 Revision History ............................................................................... 2 Outline Dimensions ....................................................................... 13 Specifications..................................................................................... 3 Ordering Guide .......................................................................... 13 REVISION HISTORY
6/11—Rev. 0 to Rev. A
Change to Figure 43 ....................................................................... 12
Updated Outline Dimensions ....................................................... 13
11/05—Revision 0: Initial Version
Rev. A | Page 2 of 16
AD8677
SPECIFICATIONS
VS = ±5.0 V, TA = +25°C, unless otherwise specified.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Test Conditions/Comments
Min
VOS
Typ
Max
Unit
40
130
350
1
μV
μV
nA
1
1
1
+3.5
nA
nA
nA
V
dB
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
Input Offset Current
IOS
0.2
−40°C ≤ TA ≤ +125°C
0.1
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Open-Loop Gain
AVO
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage Swing
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
VOUT
ISC
IO
PSRR
ISY
VCM = ±3 V
−3.5
120
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground, VO = ±3 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
120
1000
1000
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
±3.95
±3.95
±3.9
±3.9
10000
0.5
1.4
±4.1
115
110
±4
130
1.1
dB
V/mV
V/mV
μV/°C
V
V
V
V
mA
mA
27
15
VO = 3.5 V
VS = ±4.0 V to ±18.0 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
−40°C ≤ TA ≤ +125°C
127
1.25
1.7
dB
dB
mA
mA
SR
GBP
RL = 10 kΩ
0.2
0.6
80
V/μs
MHz
Degrees
en p-p
en
in
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
0.28
10
0.074
μV p-p
nV/√Hz
pA/√Hz
Rev. A | Page 3 of 16
AD8677
VS = ±15 V, TA = +25°C, unless otherwise specified.
Table 2.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Symbol
Test Conditions/Comments
Min
VOS
Typ
Max
Unit
45
130
350
1
μV
μV
nA
1
1
1
+13.5
nA
nA
nA
V
dB
dB
V/mV
V/mV
μV/°C
−40°C ≤ TA ≤ +125°C
Input Bias Current
IB
Input Offset Current
IOS
0.2
−40°C ≤ TA ≤ +125°C
0.2
−40°C ≤ TA ≤ +125°C
Input Voltage Range
Common-Mode Rejection Ratio
CMRR
Open Loop Gain
AVO
Offset Voltage Drift
ΔVOS/ΔT
OUTPUT CHARACTERISTICS
Output Voltage Swing
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
VOUT
ISC
IO
PSRR
ISY
VCM = ±13.0 V
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground, VO = ±11 V
−40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
RL = 10 kΩ to ground
−40°C ≤ TA ≤ +125°C
RL = 2 kΩ to ground
−40°C ≤ TA ≤ +125°C
−13.5
120
120
1000
1000
10000
0.5
±13.95
±13.9
±13.75
±13.7
1.5
14
V
V
V
V
mA
mA
13.8
30
15
VO = 13.5 V
VS = ±4.0 V to ±18.0 V
−40°C ≤ TA ≤ +125°C
VO = 0 V
−40°C ≤ TA ≤ +125°C
140
115
110
130
1.1
1.3
1.8
dB
dB
mA
mA
SR
GBP
RL = 10 kΩ
0.2
0.6
80
V/μs
MHz
Degrees
en p-p
en
in
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
0.25
10
0.074
μV p-p
nV/√Hz
pA/√Hz
Rev. A | Page 4 of 16
AD8677
ABSOLUTE MAXIMUM RATINGS
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.
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
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
+300°C
THERMAL RESISTANCE
θJA 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)
θJA
207
158
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. A | Page 5 of 16
θJC
61
43
Unit
°C/W
°C/W
AD8677
TYPICAL PERFORMANCE CHARACTERISTICS
50
45
45
40
NUMBER OF AMPLIFIERS
35
30
25
20
15
10
–100 –80
–60
–40
–20
0
20
40
60
80
30
25
20
15
10
5
05578-003
5
35
0
100
05578-048
NUMBER OF AMPLIFIERS
40
0
VS = ±15V
VS = ±15V
0
0.15
0.30
VOS (µV)
100
25
50
20
0
15
–50
10
–100
5
–150
0
1.20
20
40
60
80
–200
–50
100
05578-005
VOS (µV)
30
05578-004
NUMBER OF AMPLIFIERS
150
–20
1.05
VS = ±15V
35
–40
0.90
200
VS = ±5V
–60
0.75
Figure 6. TCVOS vs. Number of Amplifiers
40
–100 –80
0.60
TCVOS (µV/°C)
Figure 3. Input Offset Voltage Distribution
0
0.45
0
VOS (µV)
50
100
150
TEMPERATURE (°C)
Figure 4. Input Offset Voltage Distribution
Figure 7. Offset Voltage vs. Temperature
50
200
VS = ±5V
VS = ±5V
150
100
50
VOS (µV)
30
20
–100
10
–150
0
0.15
0.30
0.45
0.60
0.75
0.90
–200
–50
1.05
TCVOS (µV/°C)
05578-006
0
0
–50
05578-047
NUMBER OF AMPLIFIERS
40
0
50
100
TEMPERATURE (°C)
Figure 8. Offset Voltage vs. Temperature
Figure 5. TCVOS vs. Number of Amplifiers
Rev. A | Page 6 of 16
150
AD8677
1.6
–13.92
VS = ±15V
RL = 10kΩ
–13.94
1.4
VS = ±15V
–13.96
–13.98
VS = ±5V
1.0
VOL (V)
ISY (mA)
1.2
0.8
–14.00
–14.02
–14.04
–14.06
05578-007
0.6
0
50
100
–14.10
–50
150
05578-011
0.4
–50
–14.08
0
TEMPERATURE (°C)
50
100
150
TEMPERATURE (°C)
Figure 9. Supply Current vs. Temperature
Figure 12. −VOUT vs. Temperature
14.40
–3.98
VS = ±15V
RL = 10kΩ
VS = ±5V
RL = 10kΩ
–4.00
14.35
–4.02
–4.04
VOL (V)
VOH (V)
14.30
14.25
14.20
–4.06
–4.08
–4.10
–4.12
05578-009
14.15
0
50
100
–4.16
–50
150
05578-012
14.10
–50
–4.14
0
TEMPERATURE (°C)
50
100
150
TEMPERATURE (°C)
Figure 10. +VOUT vs. Temperature
Figure 13. −VOUT vs. Temperature
4.45
0
VS = ±5V
RL = 10kΩ
VS = ±15V
4.40
–0.1
4.35
IB (nA)
4.30
–0.3
4.25
4.15
–50
0
50
100
–0.5
–50
150
TEMPERATURE (°C)
05578-013
–0.4
4.20
05578-010
VOH (V)
–0.2
0
50
100
TEMPERATURE (°C)
Figure 14. Input Bias Current vs. Temperature
Figure 11. +VOUT vs. Temperature
Rev. A | Page 7 of 16
150
AD8677
0
150
VS = ±5V
VS = ±4V TO ±18V
–0.05
–0.10
140
PSRR (dB)
IB (nA)
–0.15
–0.20
–0.25
130
–0.40
–50
05578-014
–0.35
0
50
100
120
–50
150
05578-019
–0.30
0
TEMPERATURE (°C)
50
100
150
100
150
TEMPERATURE (°C)
Figure 15. Input Bias Current vs. Temperature
Figure 18. PSRR vs. Temperature
40
146
144
VS = ±15V
142
VS = ±15V
140
30
ISC (mA)
CMRR (dB)
138
134
134
132
VS = ±5V
20
128
124
–50
0
50
05578-015
VS = ±5V
126
100
10
–50
150
05578-020
130
0
50
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 19. Short Circuit Current vs. Temperature
Figure 16. CMRR vs. Temperature
16000
1.4
RL = 2kΩ
14000
1.2
VS = ±15V
SUPPLY CURRENT (mA)
8000
VS = ±5V
6000
4000
2000
–50
0
50
100
1.0
0.8
0.6
0.4
0.2
0
150
TEMPERATURE (°C)
05578-022
10000
05578-017
AVO (V/mV)
12000
0
10
20
30
SUPPLY VOLTAGE (V)
Figure 17. Open-Loop Gain vs. Temperature
Figure 20. Supply Current vs. Total Supply Voltages
Rev. A | Page 8 of 16
40
AD8677
50
10
VS = ±15V
VIN = 28mV
RL = ∞
CL = 20pF
VS = ±15V
VOH = +VOUT
40
VOL = –VOUT
1
30
G = +10
20
10
G = +1
05578-023
0
0.1
0.01
0.1
1
10
05578-026
CLOSED-LOOP GAIN (dB)
VSY – VOUT (V)
G = +100
–10
100
100
1k
10k
Figure 21. Output Voltage Swing vs. Load Current
Figure 24. Closed-Loop Gain vs. Frequency
50
VS = ±5V
CLOSED-LOOP GAIN (dB)
VSY – VOUT (V)
VOL = –VOUT
VOH = +VOUT
30
G = +10
20
10
G = +1
05578-024
0
0.1
0.01
0.1
1
10
–10
100
100
VS = ±5V
VIN = 28mV
RL = ∞
CL = 20pF
G = +100
40
1
1k
10k
ILOAD (mA)
30
80
40
GAIN
0
20
VS = ±15V
RL = ∞
CL = 20pF
Φm = 80 Degrees
10k
100k
1M
0
10M
15
10
5
05578-025
GAIN
20
+OS
20
FREQUENCY (Hz)
0
05578-028
60
40
–OS
OVERSHOOT (%)
60
VS = ±15V
VIN = ±50mV
G = +1
25
80
PHASE MARGIN (Degrees)
PHASE
1k
1M
Figure 25. Closed-Loop Gain vs. Frequency
100
100
–40
100
100k
FREQUENCY (Hz)
Figure 22. Output Voltage Swing vs. Load Current
–20
1M
05578-027
10
100k
FREQUENCY (Hz)
ILOAD (mA)
0
2
4
6
8
CLOAD (nF)
Figure 26. Overshoot vs. Capacitive Load
Figure 23. Open-Loop Gain and Phase vs. Frequency
Rev. A | Page 9 of 16
10
12
AD8677
30
100
VS = ±5V
VIN = ±50mV
G = +1
25
–OS
10
G = +100
20
ROUT (Ω)
OVERSHOOT (%)
+OS
VS = ±15V
VIN = 28mV
RL = ∞
CL = 20pF
15
G = +10
1
G = +1
10
0.1
0
2
4
6
8
10
0.01
10
12
05578-032
0
05578-029
5
100
1k
CLOAD (nF)
100
VS = ±15V
110
VS = ±5V
VIN = 28mV
RL = ∞
CL = 20pF
10
108
1M
G = +100
106
ROUT (Ω)
104
G = +10
1
G = +1
102
0.1
100
05578-030
98
96
100
1k
10k
100k
05578-033
CMRR (dB)
100k
Figure 30. Output Impedance vs. Frequency
Figure 27. Overshoot vs. Capacitive Load
112
10k
FREQUENCY (Hz)
0.01
10
1M
100
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 28. CMRR vs. Frequency
Figure 31. Output Impedance vs. Frequency
100
100
VS = ±15V
60
40
+PSRR
20
0
10
05578-031
PSRR (dB)
80
100
1k
10k
100k
1M
FREQUENCY (Hz)
10
1
0.1
05578-034
VOLTAGE NOISE DENSITY (nV/ Hz)
–PSRR
1
10
100
FREQUENCY (Hz)
Figure 29. PSRR vs. Frequency
Figure 32. Voltage Noise Density vs. Frequency
Rev. A | Page 10 of 16
1k
AD8677
10
OUTPUT VOLTAGE (1V/DIV)
VS = ±15V
in (pA/ Hz)
1
2
0.01
0.1
1
10
100
05578-039
05578-035
0.1
VS = ±5V
CL = 1nF
G = +1
VIN = 4V p-p
1k
FREQUENCY (Hz)
TIME (100µs/DIV)
Figure 36. Large Signal Transient
400mV
VS = ±5V AND ±15V
CL = 1nF
G = +1
VIN = 100mV p-p
200mV
VIN
–200mV
2
0V
–5V
VOUT
–10V
05578-040
–15V
–20V
TIME (100µs/DIV)
TIME (10µs/DIV)
Figure 34. Small Signal Transient
Figure 37. Positive Overload Recovery
400mV
VS = ±15V
CL = 1nF
G = +1
VIN = 4V p-p
200mV
VIN
VS = ±15V
VIN = 200mV
G = –100
RECOVERY = 5µs
0V
–200mV
2
15V
10V
VOUT
5V
05578-038
0V
05578-041
OUTPUT VOLTAGE (1V/DIV)
VS = ±15V
VIN = 200mV
G = –100
RECOVERY = 1µs
0V
05578-036
OUTPUT VOLTAGE (100mV/DIV)
Figure 33. Current Noise Density vs. Frequency
–5V
TIME (100µs/DIV)
TIME (10µs/DIV)
Figure 35. Large Signal Transient
Figure 38. Negative Overload Recovery
Rev. A | Page 11 of 16
AD8677
1200mV
0V
–600mV
0V
VOUT
–2V
–4V
05578-042
–6V
1
05578-045
VIN
VS = ±15V
VN p-p = 0.24µV
VS = ±5V
VIN = 600mV
G = –10
RECOVERY = 2.4µs
VOLTAGE NOISE (0.2µV/DIV)
600mV
–8V
TIME (1s/DIV)
TIME (4µs/DIV)
Figure 39. Positive Overload Recovery
Figure 42. Voltage Noise (0.1 Hz to 10 Hz)
20kΩ
600mV
VIN
0V
VS = ±5V
VIN = 600mV
G = –10
RECOVERY = 5.6µs
V+
1
–
2
–600mV
4V
8
7
AD8677
INPUT
+
–
3
+
4
6
OUTPUT
VOS TRIM RANGE IS
TYPICALLY ±3.5mV
V–
VOUT
2V
Figure 43. Optional Offset Nulling Circuit
0V
05578-043
–2V
–4V
TIME (4µs/DIV)
Figure 40. Negative Overload Recovery
VS = ±5V
VIN = ±5.7V
VIN
VOUT
05578-044
2
TIME (400µs/DIV)
Figure 41. No Phase Reversal
Rev. A | Page 12 of 16
05578-049
1200mV
AD8677
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
5
4
4.00 (0.1574)
3.80 (0.1497)
2.80 BSC
1.60 BSC
1
2
3
0.95 BSC
0.50
0.30
4
6.20 (0.2441)
5.80 (0.2284)
0.25 (0.0098)
0.10 (0.0040)
*1.00 MAX
0.10 MAX
5
1.27 (0.0500)
BSC
1.90
BSC
COPLANARITY
0.10
SEATING
PLANE
0.20
0.08
SEATING
PLANE
8°
4°
0°
0.60
0.45
0.30
100708-A
*0.90 MAX
0.70 MIN
8
1
*COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH
THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS.
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-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.
012407-A
2.90 BSC
Figure 45. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
Figure 44. 5-Lead Thin Small Outline Transistor Package [TSOT]
(UJ-5)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
AD8677ARZ
AD8677ARZ-REEL
AD8677ARZ-REEL7
AD8677AUJZ-R2
AD8677AUJZ-REEL
AD8677AUJZ-REEL7
1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
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]
Z = RoHS Compliant Part.
Rev. A | Page 13 of 16
Package Option
R-8
R-8
R-8
UJ-5
UJ-5
UJ-5
Branding
A0E
A0E
A0E
AD8677
NOTES
Rev. A | Page 14 of 16
AD8677
NOTES
Rev. A | Page 15 of 16
AD8677
NOTES
© 2005-2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
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