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Product details

Parameters

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.4 GBW (Typ) (MHz) 300 BW @ Acl (MHz) 90 Acl, min spec gain (V/V) 6 Slew rate (Typ) (V/us) 350 Vn at flatband (Typ) (nV/rtHz) 1.8 Vn at 1 kHz (Typ) (nV/rtHz) 1.8 Iq per channel (Typ) (mA) 0.96 Vos (offset voltage @ 25 C) (Max) (mV) 0.125 Rail-to-rail In to V-, Out Features Shutdown, Decompensated Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 105 Input bias current (Max) (pA) 4400000 Offset drift (Typ) (uV/C) 0.4 Output current (Typ) (mA) 20 2nd harmonic (dBc) -110 3rd harmonic (dBc) -120 @ MHz 1 open-in-new Find other High-speed op amps (GBW>=50MHz)

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • Gain Bandwidth Product: 300 MHz
  • Very-Low (Trimmed) Supply Current: 950 µA
  • Bandwidth: 90 MHz (AV = 6 V/V)
  • High Full-Power Bandwidth: 45 MHz, 4 VPP
  • Negative Rail Input, Rail-to-Rail Output
  • Single-Supply Operating Range: 2.7 V to 5.4 V
  • 25°C Input Offset: ±125 µV (Maximum)
  • Input Offset Voltage Drift: < ±1.6 µV/°C (Maximum)
  • Input Voltage Noise: 1.8 nV/√Hz (> 200 Hz)
  • Input Current Noise: 1 pA/√Hz (> 2000 Hz)
  • < 1-µA Shutdown Current for Power Savings

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open-in-new Find other High-speed op amps (GBW>=50MHz)

Description

The OPA838 decompensated voltage feedback operational amplifier provides a high 300-MHz gain bandwidth product with 1.8-nV/√Hz input noise voltage, requiring only a trimmed 0.95-mA supply current. These features combine to provide an extremely power-efficient solution for photodiode transimpedance designs and high-voltage gain stages, which require the lowest input voltage noise in signal receiver applications.

Operating at the minimum recommended noninverting gain of 6 V/V results in a 90-MHz, –3-dB bandwidth. Extremely low input noise and offset voltage make the OPA838 particularly suitable for high gains. Even at a DC-coupled gain of 1000 V/V, a 300-kHz signal bandwidth is available with a maximum output offset voltage of ±125 mV.

The single-channel OPA838 is available in 6-pin SOT-23 and SC70 packages with a power shutdown feature and a 5-pin SC70 package.

open-in-new Find other High-speed op amps (GBW>=50MHz)
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet OPA838 1-mA, 300-MHz Gain Bandwidth, Voltage-Feedback Op Amp datasheet (Rev. B) Oct. 10, 2018
Application note Higher accuracy using an external amplifier in ultrasonic flow measurement Feb. 05, 2019
Technical articles How to reduce distortion in high-voltage, high-frequency signal generation for AWGs Oct. 30, 2018
Technical articles What are the advantages of using JFET-input amplifiers in high-speed applications? Jun. 18, 2018
Technical articles Unique active mux capability combines buffer and switch into one solution Oct. 10, 2017
Technical articles How to minimize filter loss when you drive an ADC Oct. 20, 2016
Application note Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

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

Hardware development

EVALUATION BOARD Download
99
Description
The OPA838DBVEVM is an evaluation module for the single OPA838 amplifier in the DBV (SOT23-6) package. This evaluation module is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal source, and test instruments (...)
Features
  • Configured for split-supply operation and easily modified for single supply 
  • Default gain of 1 V/V configuration can be easily reconfigured for other gains
  • Designed for easy connection to standard 50-Ω input and output impedance test equipment
  • Inputs and outputs include SMA connectors
EVALUATION BOARD Download
99
Description
The OPA838DCKEVM is an evaluation module for the single OPA838 amplifier in the DCK (SC70-5) package. This evaluation module is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal source, and test instruments (...)
Features
  • Configured for split-supply operation and easily modified for single supply 
  • Default gain of 1 V/V configuration can be easily reconfigured for other gains 
  • Designed for easy connection to standard 50-Ω input and output impedance test equipment 
  • Inputs and outputs include SMA connectors

Design tools & simulation

SIMULATION MODEL Download
SBOMAE6A.ZIP (14 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOMAE7A.TSC (51 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI 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 Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
CALCULATION TOOL Download
Voltage Divider Determines A Set of Resistors for a Voltage Divider
VOLT-DIVIDER-CALC VOLT-DIVIDER-CALC quickly determines a set of resistors for a voltage divider. This KnowledgeBase Javascript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. This calculator can also be used to design non-inverting attentuation circuits.

(...)

Reference designs

REFERENCE DESIGNS Download
Ultrasonic sensing subsystem reference design for gas flow measurement
TIDM-02003 — This reference design helps designers develop an ultrasonic gas-metering subsystem using an integrated, ultrasonic sensing solution (USS) module, which provides superior metrology performance with low-power consumption and maximum integration. The design is based on the 64KB MSP430FR6043 (...)
document-generic Schematic
REFERENCE DESIGNS Download
Optimized ultrasonic sensing metrology reference design for water flow measurement
TIDM-02005 This reference design helps designers develop a cost optimized ultrasonic water-metering subsystem using an integrated, ultrasonic sensing solution (USS) module, which provides superior metrology performance with low-power consumption and maximum integration. The design is based on the 64KB (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 5 View options
SC70 (DCK) 6 View options
SOT-23 (DBV) 6 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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