1 Features
• 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

2 Applications
• Multiparameter patient monitor
• Electrocardiogram (ECG)
• Chemistry and 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)

3 Description
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.