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Precision op amps (Vos<1mV)

OPA388

ACTIVE

Single, 10-MHz, CMOS, zero-drift, zero-crossover, true RRIO precision operational amplifier

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Data sheet

OPA388

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Vos (offset voltage at 25°C) (max) (mV) 0.005 Offset drift (typ) (µV/°C) 0.005 Input bias current (max) (pA) 350 GBW (typ) (MHz) 10 Features EMI Hardened, High Cload Drive, Zero Crossover, Zero Drift Slew rate (typ) (V/µs) 5 Rail-to-rail In, Out Iq per channel (typ) (mA) 1.7 Vn at 1 kHz (typ) (nV√Hz) 7 CMRR (typ) (dB) 138 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.06 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.005 THD + N at 1 kHz (typ) (%) 0.0005
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Vos (offset voltage at 25°C) (max) (mV) 0.005 Offset drift (typ) (µV/°C) 0.005 Input bias current (max) (pA) 350 GBW (typ) (MHz) 10 Features EMI Hardened, High Cload Drive, Zero Crossover, Zero Drift Slew rate (typ) (V/µs) 5 Rail-to-rail In, Out Iq per channel (typ) (mA) 1.7 Vn at 1 kHz (typ) (nV√Hz) 7 CMRR (typ) (dB) 138 Rating Catalog Operating temperature range (°C) -40 to 125 Iout (typ) (A) 0.06 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.005 THD + N at 1 kHz (typ) (%) 0.0005
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Ultra-low offset voltage: ±0.25 µV
  • Zero drift: ±0.005 µV/°C
  • Zero crossover: 140-dB CMRR true RRIO
  • Low noise: 7.0 nV√Hz at 1 kHz
  • No 1/f noise: 140 nVPP (0.1 Hz to 10 Hz)
  • Fast settling: 2 µs (1 V to 0.01%)
  • Gain bandwidth: 10 MHz
  • Single supply: 2.5 V to 5.5 V
  • Dual supply: ±1.25 V to ±2.75 V
  • True rail-to-rail input and output
  • EMI/RFI filtered inputs
  • Industry-standard packages:
    • Single in SOIC-8, SOT-23-5, and VSSOP-8
    • Dual in SOIC-8 and VSSOP-8
    • Quad in SOIC-14 and TSSOP-14
  • Ultra-low offset voltage: ±0.25 µV
  • Zero drift: ±0.005 µV/°C
  • Zero crossover: 140-dB CMRR true RRIO
  • Low noise: 7.0 nV√Hz at 1 kHz
  • No 1/f noise: 140 nVPP (0.1 Hz to 10 Hz)
  • Fast settling: 2 µs (1 V to 0.01%)
  • Gain bandwidth: 10 MHz
  • Single supply: 2.5 V to 5.5 V
  • Dual supply: ±1.25 V to ±2.75 V
  • True rail-to-rail input and output
  • EMI/RFI filtered inputs
  • Industry-standard packages:
    • Single in SOIC-8, SOT-23-5, and VSSOP-8
    • Dual in SOIC-8 and VSSOP-8
    • Quad in SOIC-14 and TSSOP-14

The OPAx388 (OPA388, OPA2388, and OPA4388) series of precision operational amplifiers are ultra-low noise, fast-settling, zero-drift, zero-crossover devices that provide rail-to-rail input and output operation. These features and excellent ac performance, combined with only 0.25 µV of offset and 0.005 µV/°C of drift over temperature, makes the OPAx388 a great choice for driving high-precision, analog-to-digital converters (ADCs) or buffering the output of high-resolution, digital-to-analog converters (DACs). This design results in excellent performance when driving analog-to-digital converters (ADCs) without degradation of linearity. The OPA388 (single version) is available in the VSSOP-8, SOT23-5, and SOIC-8 packages. The OPA2388 (dual version) is offered in the VSSOP-8 and SO-8 packages. The OPA4388 (quad version) is offered in the TSSOP-14 and SO-14 packages. All versions are specified over the industrial temperature range of –40°C to +125°C.

The OPAx388 (OPA388, OPA2388, and OPA4388) series of precision operational amplifiers are ultra-low noise, fast-settling, zero-drift, zero-crossover devices that provide rail-to-rail input and output operation. These features and excellent ac performance, combined with only 0.25 µV of offset and 0.005 µV/°C of drift over temperature, makes the OPAx388 a great choice for driving high-precision, analog-to-digital converters (ADCs) or buffering the output of high-resolution, digital-to-analog converters (DACs). This design results in excellent performance when driving analog-to-digital converters (ADCs) without degradation of linearity. The OPA388 (single version) is available in the VSSOP-8, SOT23-5, and SOIC-8 packages. The OPA2388 (dual version) is offered in the VSSOP-8 and SO-8 packages. The OPA4388 (quad version) is offered in the TSSOP-14 and SO-14 packages. All versions are specified over the industrial temperature range of –40°C to +125°C.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet OPAx388 Precision, Zero-Drift, Zero-Crossover, True Rail-to-Rail, Input/Output Operational Amplifiers datasheet (Rev. D) PDF | HTML Jul 14, 2020
White paper Optimizing Chopper Amplifier Accuracy (Rev. A) PDF | HTML May 15, 2025
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) PDF | HTML Dec 5, 2024
Circuit design High-speed overcurrent detection circuit (Rev. B) PDF | HTML Oct 2, 2024
Application brief Zero-crossover Amplifiers: Features and Benefits (Rev. B) PDF | HTML Nov 8, 2023
Application brief How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) PDF | HTML Feb 14, 2023
E-book An Engineer’s Guide to Designing with Precision Amplifiers Apr 29, 2021
Application brief Zero-Drift Amplifiers: Features and Benefits (Rev. C) Jan 28, 2021
Application brief Minimize Errors in Weigh-Scales With Zero-Drift, EMI-Hardened, Precision Amps (Rev. A) PDF | HTML Dec 8, 2020
Application brief Low-Power, Small-Size, High-Side Current Monitoring Jun 3, 2020
Technical article How to design an infrared thermometer quickly PDF | HTML Apr 7, 2020
Application brief EMI-Hardened Op Amps Reduce Errors in EKGs (Rev. A) Aug 21, 2019
Application brief EMI-Hardened Op Amps Reduce Errors in Infusion Pumps (Rev. A) Aug 21, 2019
Circuit design Non-inverting op amp with non-inverting positive reference voltage circuit (Rev. A) Feb 1, 2019
Application brief Green-Williams-Lis: Improved Op Amp Spice Model Jan 28, 2019
Application brief Multichannel Analog Input Modules for PLC Equipment Jan 4, 2019
Application brief How to Properly Configure Unused Operational Amplifiers (Rev. A) Sep 21, 2018
Application brief Dual Bipolar Power-Supply Considerations for Amplifiers Aug 1, 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017

Design & development

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

Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
Supported products & hardware
Simulation model

OPAx388 PSpice Model (Rev. D)

SBOMAB3D.ZIP (29 KB) - PSpice model
Supported products & hardware
Simulation model

OPAx388 TINA-TI Reference Design (Rev. C)

SBOMAB1C (342 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

OPAx388 TINA-TI Spice Model (Rev. C)

SBOMAB2C.ZIP (10 KB) - TINA-TI Spice model
Supported products & hardware
Calculation tool

ANALOG-ENGINEER-CALC — PC software 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 operational-amplifier (...)

Supported products & hardware
Calculation tool

OPAMP-NOISECALC — Noise Calculator

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:

  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
Supported products & hardware
Design tool

CIRCUIT060064 — Non-inverting op amp with non-inverting positive reference voltage circuit

This design uses a non-inverting amplifier with a non-inverting positive reference to translate an input signal of –1 V to 3 V to an output voltage of 0.05 V to 4.95 V. This circuit can be used to translate a sensor output voltage with a positive slope and negative offset to a usable ADC input (...)
Supported products & hardware
Design tool

CIRCUIT060075 — High-speed overcurrent detection circuit

This high-speed, low-side overcurrent detection solution is implemented with a single zero-drift fast-settling amplifier (OPA388) and one high-speed comparator (TLV3201). This circuit is designed for applications that monitor fast current signals and overcurrent events, such as current detection in (...)
Supported products & hardware
Design tool

SBOC513 — Simulation for Non-Inverting Op Amp With Non-Inverting Positive Reference

Supported products & hardware
Reference design

TIDA-01402 — High-Precision Reference Design for Buffering a DAC Signal

This reference design features the industry's first zero-crossover and zero-drift amplifier (OPA388) to buffer the analog output of a digital-to-analog converter (DAC). It demonstrates the importance of the zero-crossover and zero-drift feature and how they can minimize the integral non-linearity (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBV) 5 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
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