a
FEATURES
Low Offset Voltage: 60 V Max
Very Low Offset Voltage Drift: 0.7 V/ C Max
Low Input Bias Current: 2 nA Max
Low Noise: 8 nV/
√
Hz
CMRR, PSRR, and A
VO
> 120 dB Min
Low Supply Current: 400 A/Amp
Dual Supply Operation: 2.5 V to 15 V
Unity Gain Stable
No Phase Reversal
Inputs Internally Protected Beyond Supply Voltage
APPLICATIONS
Wireless Base Station Control Circuits
Optical Network Control Circuits
Instrumentation
Sensors and Controls
Thermocouples
RTDs
Strain Bridges
Shunt Current Measurements
Precision Filters
GENERAL DESCRIPTION
Precision Low Noise, Low Input
Bias Current Operational Amplifiers
OP1177/OP2177/OP4177
FUNCTIONAL BLOCK DIAGRAM
8-Lead MSOP
(RM-Suffix)
NC
IN
IN
V
1
8
NC
V+
OUT
NC
8-Lead SOIC
(R-Suffix)
OP1177
4
5
NC = NO CONNECT
NC 1
IN 2
+IN 3
V
4
8 NC
OP1177
7 V+
6 OUT
5 NC
NC = NO CONNECT
8-Lead MSOP
(RM-Suffix)
OUT A
IN A
IN A
V
1
8
V+
OUT B
–IN B
+IN B
8-Lead SOIC
(R-Suffix)
OP2177
4
5
OUT A
1
8 V+
IN A 2
+IN A 3
V
4
OP2177
7 OUT B
6
IN B
5 +IN B
The OPx177 family consists of very high-precision, single, dual,
and quad amplifiers featuring extremely low offset voltage and
drift, low input bias current, low noise, and low power con-
sumption. Outputs are stable with capacitive loads of over
1,000 pF with no external compensation. Supply current is less
than 500
µA
per amplifier at 30 V. Internal 500
Ω
series resis-
tors protect the inputs, allowing input signal levels several volts
beyond either supply without phase reversal.
Unlike previous high-voltage amplifiers with very low offset voltages, the
OP1177 and OP2177 are available in the tiny MSOP 8-lead sur-
face-mount package, while the OP4177 is available in TSSOP14.
Moreover, specified performance in the MSOP/TSSOP package is
identical to performance in the SOIC package.
OPx177 family offers the widest specified temperature range of
any high-precision amplifier in surface-mount packaging. All
versions are fully specified for operation from –40°C to +125°C for
the most demanding operating environments.
Applications for these amplifiers include precision diode power
measurement, voltage and current level setting, and level detec-
tion in optical and wireless transmission systems. Additional
applications include line powered and portable instrumentation
14-Lead SOIC
(R-Suffix)
OUT A 1
IN A 2
+IN A 3
V+ 4
+IN B 5
IN B 6
OUT B 7
14 OUT D
13
IN D
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
14-Lead TSSOP
(RU-Suffix)
1
14
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OP4177
7
8
OP4177
OP4177
12 +IN D
11 V
10 +IN C
9
8
IN C
OUT C
and controls—thermocouple, RTD, strain-bridge, and other
sensor signal conditioning—and precision filters.
The OP1177 (single) and the OP2177 (dual) amplifiers are
available in the 8-lead MSOP and 8-lead SOIC packages. The
OP4177 (quad) is available in 14-lead narrow SOIC and 14-lead
TSSOP packages. MSOP and TSSOP packages are available in
tape and reel only.
REV. B
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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
© Analog Devices, Inc., 2002
OP1177/OP2177/OP4177–SPECIFICATIONS
Parameter
INPUT CHARACTERISTICS
Offset Voltage
OP1177
OP2177/4177
OP1177/2177
OP4177
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
OP1177/OP2177
OP4177
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Current
POWER SUPPLY
Power Supply Rejection Ratio
OP1177
OP2177/OP4177
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
MULTIPLE AMPLIFIERS
CHANNEL SEPARATION
Symbol
Conditions
V
OS
V
OS
V
OS
V
OS
I
B
I
OS
CMRR
A
VO
∆V
OS
/∆T
∆V
OS
/∆T
V
OH
V
OL
I
OUT
(@ V
S
= 5.0 V, V
CM
= 0 V, T
A
= 25 C, unless
otherwise noted.)
Min
Typ*
Max
Unit
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
V
CM
= –3.5 V to +3.5 V
–40°C < T
A
< +125°C
R
L
= 2 kΩ , V
O
= –3.5 V to +3.5 V
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
I
L
= 1 mA, –40°C < T
A
< +125°C
I
L
= 1 mA, –40°C < T
A
< +125°C
V
DROPOUT
< 1.2 V
–2
–1
–3.5
120
118
1,000
15
15
25
25
+0.5
+0.2
126
125
2,000
0.2
0.3
60
75
100
120
+2
+1
+3.5
µV
µV
µV
µV
nA
nA
V
dB
dB
V/mV
µV/°C
µV/°C
V
V
mA
0.7
0.9
+4
+4.1
–4.1
±
10
–4
PSRR
PSRR
I
SY
V
S
=
±
2.5 V to
±
15 V,
–40°C < T
A
< +125°C
V
S
=
±
2.5 V to
±
15 V,
–40°C < T
A
< +125°C
V
O
= 0 V
–40°C < T
A
< +125°C
R
L
= 2 kΩ
120
115
118
114
130
125
121
120
400
500
0.7
1.3
0.4
7.9
0.2
0.01
–120
500
600
dB
dB
dB
dB
µA
µA
V/µs
MHz
µV
p-p
nV/√Hz
pA/√Hz
µV/V
dB
SR
GBP
e
n
p-p
e
n
i
n
C
S
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
DC
f = 100 kHz
8.5
*Typical
values cover all parts within one standard deviation of the average value. Average values, given in many competitors ’ data sheets as “typical,” give unrealistically
low estimates for parameters that can have both positive and negative values.
Specifications subject to change without notice.
–2–
REV. B
OP1177/OP2177/OP4177
ELECTRICAL CHARACTERISTICS
Parameter
INPUT CHARACTERISTICS
Offset Voltage
OP1177
OP2177/OP4177
OP1177/OP2177
OP4177
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large Signal Voltage Gain
Offset Voltage Drift
OP1177/OP2177
OP4177
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Current
Short Circuit Current
POWER SUPPLY
Power Supply Rejection Ratio
OP1177
OP2177/OP4177
Supply Current/Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
Voltage Noise Density
Current Noise Density
MULTIPLE AMPLIFIERS
CHANNEL SEPARATION
Symbol
(@ V
S
=
15 V, V
CM
= 0 V, T
A
= 25 C, unless otherwise noted.)
Conditions
Min
Typ*
Max
Unit
V
OS
V
OS
V
OS
V
OS
I
B
I
OS
CMRR
A
VO
∆V
OS
/∆T
∆V
OS
/∆T
V
OH
V
OL
I
OUT
I
SC
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
V
CM
= –13.5 V to +13.5 V
–40°C < T
A
< +125°C
R
L
= 2 kΩ , V
O
= –13.5 V to +13.5 V
–40°C < T
A
< +125°C
–40°C < T
A
< +125°C
I
L
= 1 mA, –40°C < T
A
< +125°C
I
L
= 1 mA, –40°C < T
A
< +125°C
V
DROPOUT
< 1.2 V
–2
–1
–13.5
120
1,000
15
15
25
25
+0.5
+0.2
60
75
100
120
+2
+1
+13.5
µV
µV
µV
µV
nA
nA
V
dB
V/mV
125
3,000
0.2
0.3
0.7
0.9
µV/°C
µV/°C
V
V
mA
mA
+14
+14.1
–14.1
±
10
±
35
–14
PSRR
PSRR
I
SY
V
S
=
±
2.5 V to
±
15 V,
–40°C < T
A
< +125°C
V
S
=
±
2.5 V to
±
15 V,
–40°C < T
A
< +125°C
V
O
= 0 V
–40°C < T
A
< +125°C
R
L
= 2 kΩ
120
115
118
114
130
125
121
120
400
500
0.7
1.3
0.4
7.9
0.2
0.01
–120
500
600
dB
dB
dB
dB
µA
µA
V/µs
MHz
µV
p-p
nV/√Hz
pA/√Hz
µV/V
dB
SR
GBP
e
n
p-p
e
n
i
n
C
S
0.1 Hz to 10 Hz
f = 1 kHz
f = 1 kHz
DC
f = 100 kHz
8.5
*Typical
values cover all parts within one standard deviation of the average value. Average values, given in many competitors ’ data sheets as “typical,” give unrealistically
low estimates for parameters that can have both positive and negative values.
Specifications subject to change without notice.
REV. B
–3–
OP1177/OP2177/OP4177
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
S–
to V
S+
Differential Input Voltage . . . . . . . . . . . . . .
±
Supply Voltage
Storage Temperature Range
R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C
Operating Temperature Range
OP1177/OP2177/OP4177 . . . . . . . . . . . –40°C to +125°C
Junction Temperature Range
R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering, 10 sec) . . . . . . . 300°C
*Stresses
above those listed under Absolute Maximum Ratings may cause perma-
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 condi-
tions for extended periods may affect device reliability.
Package Type
8-Lead MSOP (RM)
2
8-Lead SOIC (R)
14-Lead SOIC (R)
14-Lead TSSOP (RU)
1
JA
JC
Unit
°C/W
°C/W
°C/W
°C/W
190
158
120
240
44
43
36
43
NOTES
1
θ
JA
is specified for worst-case conditions, i.e.,
θ
JA
is specified for device soldered
in circuit board for surface-mount packages.
2
MSOP is only available in tape and reel.
ORDERING GUIDE
Model
OP1177ARM
OP1177AR
OP2177ARM
OP2177AR
OP4177AR
OP4177ARU
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 MINI_SOIC
8-Lead SOIC
8-Lead MINI_SOIC
8-Lead SOIC
14-Lead SOIC
14-Lead TSSOP
Package
Option
RM-8
SO-8
RM-8
SO-8
R-14
RU-14
Branding
Information
AZA
B2A
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
the OP1177/OP2177/OP4177 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.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. B
Typical Performance Characteristics– OP1177/OP2177/OP4177
50
45
NUMBER OF AMPLIFIERS
V
SY
=
15V
90
V
SY
=
80
15V
140
V
SY
=
120
NUMBER OF AMPLIFIERS
15V
NUMBER OF AMPLIFIERS
40
35
30
25
20
15
10
5
0
40
10 20
30 20 10 0
INPUT OFFSET VOLTAGE –
30
V
40
70
60
50
40
30
20
10
0
0.05
0.15
0.25 0.35 0.45
TCV
OS
– V/ C
0.55
100
80
60
40
20
0
0
0.1 0.2 0.3 0.4 0.5 0.6
INPUT BIAS CURRENT – nA
0.7
TPC 1. Input Offset Voltage
Distribution
TPC 2. Input Offset Voltage
Drift Distribution
TPC 3. Input Bias Current
Distribution
1.8
1.6
OUTPUT VOLTAGE – V
3
V
SY
= 15V
T
A
= 25 C
60
0
V
SY
= 15V
C
L
= 0
R
L
=
45
PHASE SHIFT – Degrees
V
SY
=
INPUT BIAS CURRENT – nA
15V
50
2
OPEN-LOOP GAIN – dB
40
30
GAIN
20
10
0
10
20
1.4
1.2
1.0
0.8
0.6
1
0
90
PHASE
135
SOURCE
1
SINK
0.4
0.2
0
0.001
0.01
0.1
1
LOAD CURRENT – mA
10
2
3
50
0
50
100
TEMPERATURE – C
150
100k
1M
FREQUENCY – Hz
180
10M
TPC 4. Output Voltage to Supply
Rail vs. Load Current
TPC 5. Input Bias Current vs.
Temperature
TPC 6. Open-Loop Gain and
Phase Shift vs. Frequency
120
100
500
V
SY
= 15V
V
IN
= 4mV p-p
C
L
= 0
R
L
=
A
V
= 100
A
V
= 10
450
400
OUTPUT IMPEDANCE –
V
SY
= 15V
V
IN
= 50mV p-p
CLOSED-LOOP GAIN – dB
80
60
40
20
0
20
40
60
80
1k
10k
A
V
= 10
A
V
= 1
A
V
= 100
300
250
200
150
100
50
0
A
V
= 1
VOLTAGE – 1V/DIV
350
V
SY
= 15V
C
L
= 300pF
R
L
= 2k
V
IN
= 4V
A
V
= 1
GND
100k
1M
10M
FREQUENCY – Hz
100M
100
1k
100k
10k
FREQUENCY – Hz
1M
TIME – 100 s/DIV
TPC 7. Closed-Loop Gain vs.
Frequency
TPC 8. Output Impedance vs.
Frequency
TPC 9. Large Signal Transient
Response
REV. B
–5–
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