OPA392
SBOS926A – JANUARY 2021 – REVISED AUGUST 2021
OPAx392 Precision, Low-Offset-Voltage, Low-Noise, Low-Input-Bias-Current,
Rail-to-Rail I/O, e-trim™ Operational Amplifiers
1 Features
3 Description
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Low offset voltage: ±10 µV (maximum)
Low-drift: ±0.18 µV/°C
Low input bias current: 10 fA
Low noise: 4.4 nV/√Hz at 10 kHz
Low 1/f noise: 2 µVPP (0.1 Hz to 10 Hz)
Low supply voltage operation: 1.7 V to 5.5 V
Low quiescent current: 1.22 mA
Fast settling: 0.75 µs (1 V to 0.1%)
Fast slew rate: 4.5 V/µs
High output current: +65/–55-mA short circuit
Gain bandwidth: 13 MHz
Rail-to-rail input and output
Specified temperature range: –40°C to +125°C
EMI and RFI filtered inputs
The OPAx392 family of operational amplifiers
(OPA392, OPA2392, and OPA4392) features ultra-low
offset, offset drift, and input bias current with rail-to-rail
input and output operation. In addition to precision
dc accuracy, the ac performance is optimized for
low noise and fast-settling transient response. These
features make the OPAx392 an excellent choice
for driving high-precision analog-to-digital converters
(ADCs) or buffering the output of high-resolution,
digital-to-analog converters (DACs).
The OPAx392 feature TI's e-trim™ operational
amplifier technology to achieve ultra-low offset
voltage and offset voltage drift without any input
chopping or auto-zero techniques. This technique
enables ultra-low input bias current for sensor inputs
or photodiode current-to-voltage measurements,
creating high-performance transimpedance stages for
optical modules or medical instrumentation.
2 Applications
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Multiparameter patient monitor
Electrocardiogram (ECG)
Chemistry/gas analyzer
Optical module
Analog input module
Process analytics (pH, gas, concentration, force
and humidity)
Gas detector
Analog security camera
Merchant DC/DC
Pulse oximeter
Inter-DC interconnect (long-haul, submarine)
Data acquisition (DAQ)
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
1.00 mm x 0.8 mm
2.00 mm x 1.25 mm
2.90 mm x 1.60 mm
1.20 mm x 1.20 mm
3.00 mm x 3.00 mm
4.90 mm x 3.90 mm
5.00 mm x 4.40 mm
3.00 mm x 3.00 mm
DSBGA (6)(3)
OPA392
SC-70 (5) (3)
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SOT-23 (5)
DSBGA (9)(3)
VSSOP (8)(3)
SOIC (8)(3)
OPA2392(2)
OPA4392(2)
TSSOP (14)(3)
QFN (16)(3)
Precision Current
+3.3 V
Shunt Monitor
(1) For all available packages, see the package option
addendum at the end of the data sheet.
(2) Device is preview.
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VIN
OPA392
ADC
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(3) Package is preview.
+3.3 V
Precision Current
Source
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OPA392
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DAC
Optical Power
Monitor
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OPA392
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ADC
OPAx392 Input Offset Voltage Distribution
OPAx392 Applications in Optical Modules
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.