Top

Product details

Parameters

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 5 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 250 BW @ Acl (MHz) 450 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 1100 Vn at flatband (Typ) (nV/rtHz) 5.6 Vn at 1 kHz (Typ) (nV/rtHz) 11 Iq per channel (Typ) (mA) 15.5 Vos (offset voltage @ 25 C) (Max) (mV) 6 Rail-to-rail No Features Integrated Clamps Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 61 Input bias current (Max) (pA) 10000000 Offset drift (Typ) (uV/C) 15 Output current (Typ) (mA) 120 2nd harmonic (dBc) 74 3rd harmonic (dBc) 87 @ MHz 5 open-in-new Find other High-speed op amps (GBW>=50MHz)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • HIGH LINEARITY NEAR LIMITING
  • FAST RECOVERY FROM OVERDRIVE: 1ns
  • LIMITING VOLTAGE ACCURACY: ±10mV
  • –3dB BANDWIDTH (G = +1): 450MHz
  • GAIN BANDWIDTH PRODUCT: 250MHz
  • SLEW RATE: 1100V/µs
  • ±5V AND +5V SUPPLY OPERATION
  • HIGH-GAIN VERSION AVAILABLE: OPA699
  • APPLICATIONS
    • FAST LIMITING ANALOG-TO-DIGITAL CONVERTER (ADC) INPUT BUFFERS
    • CCD PIXEL CLOCK STRIPPING
    • VIDEO SYNC STRIPPING
    • HF MIXERS
    • IF LIMITING AMPLIFIERS
    • AM SIGNAL GENERATION
    • NONLINEAR ANALOG SIGNAL PROCESSING
    • OPA688 UPGRADE

All trademarks are the property of their respective owners.

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

Description

The OPA698 is a wideband, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±10mV. The op amp operates linearly to within 20mV of the output limit voltages.

The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting ensures that overdrive signals will be transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op amp applications.

Nonlinear analog signal processing will benefit from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.

The OPA698 is available in an industry standard pinout SO-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA699.

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

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 12
Type Title Date
* Datasheet Unity Gain Stable, Wideband Voltage Limiting Amplifier datasheet (Rev. D) Dec. 30, 2008
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 RLC Filter Design for ADC Interface Applications (Rev. A) May 13, 2015
Application notes ADC Input Protection Sep. 04, 2013
Application notes Video Designs Using High-Speed Amplifiers (Rev. A) Feb. 03, 2005
Application notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005
Application notes ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers Apr. 22, 2004
Application notes Measuring Board Parasitics in High-Speed Analog Design Jul. 07, 2003

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
5
Description

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

Design tools & simulation

SIMULATION MODELS Download
SBOC045.ZIP (1 KB) - PSpice Model
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.

(...)

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos