OP1177 Datasheet, PDF (1/20 Pages) Analog Devices – Precision Low Noise, Low Input Bias Current Operational Amplifiers

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Precision Low Noise, Low Input
Bias Current Operational Amplifiers
OP1177/OP2177/OP4177
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
FUNCTIONAL BLOCK DIAGRAM
8-Lead MSOP
(RM-Suffix)
8-Lead SOIC
(R-Suffix)
NC
1
8
NC
؊IN
؉IN
OP1177
V+
OUT
V؊
4
5
NC
NC = NO CONNECT
NC 1
؊IN 2
+IN 3
V؊ 4
OP1177
8 NC
7 V+
6 OUT
5 NC
NC = NO CONNECT
8-Lead MSOP
(RM-Suffix)
OUT A
؊IN A
؉IN A
V؊
1
8
OP2177
4
5
V+
OUT B
–IN B
+IN B
8-Lead SOIC
(R-Suffix)
OUT A 1
؊IN A 2
+IN A 3
V؊ 4
OP2177
8 V+
7 OUT B
6 ؊IN B
5 +IN B
GENERAL DESCRIPTION
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)
14-Lead TSSOP
(RU-Suffix)
OUT A 1
؊IN A 2
+IN A 3
V+ 4
+IN B 5
؊IN B 6
OUT B 7
OP4177
OP4177
14 OUT D
13 ؊IN D
12 +IN D
11 V؊
10 +IN C
9 ؊IN C
8 OUT C
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
14
OP4177
7
8
OUT D
–IN D
+IN D
V–
+IN C
–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
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may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 2002