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Product details

Parameters

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.5 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 GBW (Typ) (MHz) 30 BW @ Acl (MHz) 56 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 160 Vn at flatband (Typ) (nV/rtHz) 9.3 Vn at 1 kHz (Typ) (nV/rtHz) 9.3 Iq per channel (Typ) (mA) 0.25 Vos (offset voltage @ 25 C) (Max) (mV) 0.5 Rail-to-rail In to V-, Out Features Shutdown Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 113 Input bias current (Max) (pA) 400000 Offset drift (Typ) (uV/C) 2.25 Output current (Typ) (mA) 40 2nd harmonic (dBc) 70 3rd harmonic (dBc) 73 @ 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 WQFN (RUN) 10 4 mm² 2 x 2 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • Ultra-Low Power
    • Supply Voltage: 2.5 V to 5.5 V
    • Quiescent Current: 250 µA/ch (Typical)
    • Power Down Mode: 0.5 µA (Typical)
  • Bandwidth: 56 MHz (AV = 1 V/V)
  • Slew Rate: 160 V/µs
  • Rise Time: 10 ns (2 VSTEP)
  • Settling Time (0.1%): 55 ns (2 VSTEP)
  • Overdrive Recovery Time: 200 ns
  • SNR: 0.00015% (–116.4 dBc) at 1 kHz (1 VRMS)
  • THD: 0.00003% (–130 dBc) at 1 kHz (1 VRMS)
  • HD2/HD3: –70 dBc/–73 dBc at 1 MHz (2 VPP)
  • Input Voltage Noise: 9.3 nV/√Hz (f = 100 kHz)
  • Input Offset Voltage: 100 µV (±500-µV Maximum)
  • CMRR: 113 dB
  • Output Current Drive: 40 mA
  • RRO: Rail-to-Rail Output
  • Input Voltage Range: –0.2 V to 3.9 V
    (5-V Supply)
  • Operating Temperature Range:
    –40°C to +125°C
open-in-new Find other High-speed op amps (GBW>=50MHz)

Description

The OPA835 and OPA2835 devices (OPAx835) are single and dual ultra-low-power, rail-to-rail output, negative-rail input, voltage-feedback (VFB) operational amplifiers designed to operate over a power supply range of 2.5-V to 5.5-V with a single supply, or ±1.25-V to ±2.75-V with a dual supply. Consuming only 250 µA per channel and with a unity gain bandwidth of 56 MHz, these amplifiers set an industry-leading performance-to-power ratio for rail-to-rail amplifiers.

For battery-powered, portable applications where power is of key importance, the low power consumption and high-frequency performance of the OPA835 and OPA2835 devices offers performance versus power that is not attainable in other devices. Coupled with a power-savings mode to reduce current to < 1.5 µA, these devices offer an attractive solution for high-frequency amplifiers in battery-powered applications.

The OPA835 RUN package option includes integrated gain-setting resistors for the smallest possible footprint on a printed-circuit-board (approximately 2.00 mm × 2.00 mm). By adding circuit traces on the PCB, gains of +1, –1, –1.33, +2, +2.33, –3, +4, –4, +5, –5.33, +6.33, –7, +8 and inverting attenuations of –0.1429, –0.1875, –0.25, –0.33, –0.75 can be achieved.

The OPA835 and OPA2835 devices are characterized for operation over the extended industrial temperature range of –40°C to +125°C.

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 14
Type Title Date
* Datasheet OPAx835 Ultra-Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp datasheet (Rev. I) Aug. 30, 2016
White papers Ein Techniker-Leitfaden für Industrieroboter-Designs Mar. 25, 2020
White papers E-book: An engineer’s guide to industrial robot designs Feb. 12, 2020
Application notes 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
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical articles How to minimize filter loss when you drive an ADC Oct. 20, 2016
Application notes OPA835 Op Amp Applications (Rev. B) Oct. 19, 2016
User guides OPA835DBV and OPA836DBV EVM User's Guide Mar. 08, 2011
Application notes Designing for low distortion with high-speed op amps Mar. 02, 2005
Application notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005
Application notes Voltage Feedback vs. Current Feedback Op Amps Nov. 30, 1998

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS794xEVM-PDK is designed to evaluate the ADS7945 and ADS7946 analog-to-digital converters. These converters are 14-bit dual-channel differential SAR converters with a maximum throughput rate of 2MSPS. The ADS7945 offers fully-differential input voltages while the ADS7946’s pseudo (...)

Features
  • 5V, 3.3V, or 1.8V logic compatible with 16-bit 40Mhz SPI Interface
  • Simple channel selection with a single 16-bit word command
  • Serial interface header for easy connection to TI DSP based communication systems
  • Compatible with the TI Modular EVM System
  • Voltage reference options: on-board REF5040 (4.096V (...)
EVALUATION BOARDS Download
document-generic User guide
99
Description

The OPA835IDBVEVM is an evaluation module for the single, OPA835 in the DBV (6-lead SOT-23) package.

The OPA835IDBVEVM and OPA836IDBVEVM are designed to quickly demonstrate the functionality and versatility of the amplifier(s). The EVM is ready to connect to power, signal source, and test instruments (...)

Features
  • Configured for split supply operation and modified for single supply
  • Default non-inverting gain of 2 configuration can be reconfigured for other gains
  • Designed for connection to standard 50-Ω input/output impedance test equipment
  • Inputs and Outputs include SMA connectors
  • Design tools & simulation

    SIMULATION MODELS Download
    SLOM221B.ZIP (7 KB) - PSpice Model
    SIMULATION MODELS Download
    SLOM222C.ZIP (13 KB) - TINA-TI Spice Model
    SIMULATION MODELS Download
    SLOM223C.TSC (6639 KB) - TINA-TI Reference Design
    SIMULATION TOOLS 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 TOOLS 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 (...)
    document-generic User guide
    CALCULATION TOOLS 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 TOOLS 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
    Current Sensing with <1-us Settling for 1-, 2- & 3-Shunt FOC in 3-Phase Inverter Reference Design
    TIDA-00778 — The TIDA-00778 reference design demonstrates fast and accurate current sensing for a three-phase motor driven with sensorless field-oriented control (FOC). Drives with lower audible noise require faster andaccurate current sensing. The most common low-cost current-sensing methods use a single shunt (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    Spectrum Analyzer Signal Conditioning and Processing for Capturing Arc Signatures Reference Design
    TIDA-00929 — The TIDA-00929 TI design demonstrates bandwidth optimized analog front end (AFE) and real-time FIR implementation using low power to capture broadband frequency spectrum in any waveform. Operational amplifier in each signal path is chosen based on the gain, signal bandwidth, low noise, close to the (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    Three 12-Bit Data Acquisition Reference Designs Optimized for Low Power and Ultra-Small Form Factor
    TIPD168 This Verified Precision Design details the design procedure, simulated results, and showcases the actual performance of a 12-bit discrete data acquisition block using the ADS7042, optimized for extremely low power, small form factor applications for the following three different optimizations: 

    (...)

    document-generic Schematic document-generic User guide

    CAD/CAE symbols

    Package Pins Download
    QFN (RUN) 10 View options
    SOT-23 (DBV) 6 View options

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