OPA182, OPA2182, OPA4182
SBOS936D – DECEMBER 2019 – REVISED DECEMBER 2021
OPAx182 36-V, 5-MHz, Low-Noise, Zero-Drift, MUX-Friendly, Precision Op Amps
1 Features
3 Description
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Ultra-high precision:
The OPA182, OPA2182, and OPA4182 (OPAx182)
are high-precision operational amplifiers in an
ultra-low noise, fast-settling, zero-drift device that
provides rail-to-rail output operation and features
a unique MUX-friendly architecture and controlled
start-up system. These features and excellent ac
performance, combined with only 0.45 µV of offset
voltage and 0.003 µV/°C of drift over temperature,
– Zero-drift: 0.003 μV/°C
– Ultra-low offset voltage: 4 μV (maximum)
Excellent dc precision:
– CMRR: 168 dB
– Open-loop gain: 170 dB
Low noise:
– en at 1 kHz: 5.7 nV/√Hz
– 0.1-Hz to 10-Hz noise: 0.12 µVPP
Excellent dynamic performance:
– Gain bandwidth: 5 MHz
– Slew rate: 10 V/µs
make the OPAx182
a
great choice for data
acquisition, battery test, analog input modules, weigh
scales, and any other systems requiring high dc
precision and low noise.
– Fast settling: 10-V step, 0.01% in 1.7 µs
Robust design:
– MUX-friendly inputs
– RFI/EMI filtered inputs
Wide supply: : ±2.25 V to ±18 V, 4.5 V to 36 V
Quiescent current: 0.85 mA
Rail-to-rail output
The MUX-friendly input architecture prevents inrush
current when applying large input differential voltages
that improves settling performance in multichannel
systems. Moreover, the controlled start-up system
rejects any inrush current upon ramping up the supply
rails, all while providing robust ESD protection during
shipment, handling, and assembly.
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Input includes negative rail
The device is specified from –40°C to +125°C.
2 Applications
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
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Battery test
DC power supply, ac source, electronic load
Data acquisition (DAQ)
Semiconductor test
Weigh scale
Analog input module
Flow transmitter
SOIC (8)
4.90 mm x 3.90 mm
OPA182
SOT-23 (5) - Preview 2.90 mm x 1.60 mm
SOIC (8)
4.90 mm x 3.90 mm
3.00 mm x 3.00 mm
OPA2182
OPA4182
VSSOP (8)
TSSOP (14) - Preview 5.00 mm x 4.40 mm
SOIC (14) 8.65 mm x 3.91 mm
(1) For all available packages, see the package option
addendum at the end of the data sheet.
36
32
28
24
3.4 Mꢀ
18 V
18 V
10 kꢀ
10 kꢀ
Vexc
5 V
œ
OPA2182
Vout
œ
OPA2182
20
Strain Gauge
+
16
12
8
+
œ18 V
œ18 V
4
0
-0.02
-0.0125
-0.005
0.0025
0.01
0.0175
Input Offset Voltage Drift (mV/èC)
OPA2182 Bridge Sensor Application
OPAx182 Offset Drift
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.