Product details

Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Rail-to-rail In, Out GBW (Typ) (MHz) 20 Slew rate (Typ) (V/us) 10 Vos (offset voltage @ 25 C) (Max) (mV) 2 Iq per channel (Typ) (mA) 1.4 Vn at 1 kHz (Typ) (nV/rtHz) 8.5 Rating Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 1.8 Features EMI Hardened, Zero Crossover Input bias current (Max) (pA) 10 CMRR (Typ) (dB) 100 Output current (Typ) (mA) 65 Architecture CMOS
Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Rail-to-rail In, Out GBW (Typ) (MHz) 20 Slew rate (Typ) (V/us) 10 Vos (offset voltage @ 25 C) (Max) (mV) 2 Iq per channel (Typ) (mA) 1.4 Vn at 1 kHz (Typ) (nV/rtHz) 8.5 Rating Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 1.8 Features EMI Hardened, Zero Crossover Input bias current (Max) (pA) 10 CMRR (Typ) (dB) 100 Output current (Typ) (mA) 65 Architecture CMOS
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H3A
    • Device CDM ESD Classification Level C5
  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (Maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current:
    • Single-Supply Current: 1.6 mA/ch
    • Dual-Supply Current: 1.5 mA/ch
    • Quad-Supply Current: 1.4 mA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, VSSOP, TSSOP
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H3A
    • Device CDM ESD Classification Level C5
  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (Maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current:
    • Single-Supply Current: 1.6 mA/ch
    • Dual-Supply Current: 1.5 mA/ch
    • Quad-Supply Current: 1.4 mA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, VSSOP, TSSOP

The OPAx322-Q1 series consists of single-, dual-, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range from 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very-low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322-Q1 family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322-Q1 family is also excellent for consumer audio applications, particularly for single-supply systems.

The OPA322-Q1 (single version) is available in 5-pin SOT-23 package, while the OPA2322-Q1 (dual version) is offered in a 8-pin VSSOP package. The OPA4322-Q1 (quad version) is available in a 14-pin TSSOP package. All versions are specified for operation from –40°C to +125°C.

The OPAx322-Q1 series consists of single-, dual-, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range from 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very-low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322-Q1 family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322-Q1 family is also excellent for consumer audio applications, particularly for single-supply systems.

The OPA322-Q1 (single version) is available in 5-pin SOT-23 package, while the OPA2322-Q1 (dual version) is offered in a 8-pin VSSOP package. The OPA4322-Q1 (quad version) is available in a 14-pin TSSOP package. All versions are specified for operation from –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet OPAx322-Q1 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier datasheet (Rev. B) 03 May 2017
Technical article What is an op amp? 21 Jan 2020
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) 30 Nov 2018
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

OPAx322 PSpice Model (Rev. E)

SBOM888E.ZIP (32 KB) - PSpice Model
Simulation model

OPAx322-Q1 PSpice Model

SBOMBW5.ZIP (28 KB) - PSpice Model
Simulation model

OPAx322-Q1 TINA-TI Reference Design

SBOMBW6.TSC (315 KB) - TINA-TI Reference Design
Simulation model

OPAx322-Q1 TINA-TI Spice Model

SBOMBW7.ZIP (10 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
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TSSOP (PW) 14 View options

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