OPAx392 Precision, Low-Offset-Voltage, Low-Noise, Low-Input-Bias-Current,

Rail-to-Rail I/O, e-trim™ Operational Amplifiers

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)

+

±

OPA392

+

±

OPA392

3.3 V

VIN

+

±

OPA392

+

±

OPA392

Optical Power

Monitor

Precision Current

Shunt Monitor

+

±

OPA392

+

±

OPA392

Precision Current

Source

3.3 V

ADC

ADC

DAC

DAC

ADC

ADC

OPAx392 Applications in Optical Modules

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.

Device Information

PART NUMBER

CHANNELS

PACKAGE(1)

OPA392

Single

DBV (SOT-23, 5)

Single

DCK (SC70, 5)(2)

Single

YBJ (DSBGA, 6)(2)

OPA2392

Dual

D (SOIC, 8)(2)

Dual

DGK (VSSOP, 8)(2)

Dual

DSG (WSON, 8)(2)

Dual

YBJ (DSBGA, 9)

OPA4392(2)

Quad

PW (TSSOP, 14)(2)

Quad

RTE (WQFN, 16)(2)

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

(2)

Preview information (not Production Data).

OPAx392 Input Offset Voltage Distribution

OPA392, OPA2392

SBOS926E – JANUARY 2021 – REVISED SEPTEMBER 2023

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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.