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Product details

Parameters

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Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • HIGH BANDWIDTH: 400MHz (G = +10)
  • LOW INPUT VOLTAGE NOISE: 1.2nV/√Hz
  • VERY LOW DISTORTION: –100dBc (5MHz)
  • HIGH SLEW RATE: 625V/µs
  • HIGH DC ACCURACY: VIO ±150µV
  • LOW SUPPLY CURRENT: 12.6mA
  • HIGH GAIN BANDWIDTH PRODUCT: 1750MHz
  • STABLE FOR GAINS ≥ 7
  • APPLICATIONS
    • HIGH DYNAMIC RANGE ADC PREAMPS
    • LOW–NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
    • WIDEBAND, HIGH GAIN AMPLIFIERS
    • LOW–NOISE DIFFERENTIAL RECEIVERS
    • VDSL LINE RECEIVERS
    • ULTRASOUND CHANNEL AMPLIFIERS
    • SECURITY SENSOR FRONT ENDS
    • UPGRADE FOR THE OPA686, CLC425, AND LMH6624

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

Description

The OPA846 combines very high gain bandwidth and large signal performance with very low input voltage noise, while dissipating a low 12.6mA supply current. The classical differential input stage, along with two stages of forward gain and a high power output stage, combine to make the OPA846 an exceptionally low distortion amplifier with excellent DC accuracy and output drive. The voltage-feedback architecture allows all standard op amp applications to be implemented with very high performance.

The combination of low input voltage and current noise, along with a 1.75GHz gain bandwidth product, make the OPA846 an ideal amplifier for wideband transimpedance stages. As a voltage gain stage, the OPA846 is optimized for a flat response at a gain of +10 and is stable down to a gain of +7.

A new external compensation technique can be used to give a very flat frequency response below the minimum stable gain for the OPA846, further improving its already exceptional distortion performance. Using this compensation makes the OPA846 one of the premier 12– to 16–bit Analog–to–Digital (A/D) converter input drivers. The supply current for the OPA846 is precisely trimmed to 12.6mA at +25°C. This, along with carefully defined supply current tempco in the input and output stages, combine to provide exceptional performance over the full specified temperature range.

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

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Type Title Date
* Data sheet Wideband, Low Noise, Voltage-Feedback Operational Amplifier datasheet (Rev. E) Dec. 30, 2008
Technical article How to reduce distortion in high-voltage, high-frequency signal generation for AWGs Oct. 30, 2018
Technical article What are the advantages of using JFET-input amplifiers in high-speed applications? Jun. 19, 2018
Technical article Unique active mux capability combines buffer and switch into one solution Oct. 10, 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical article How to minimize filter loss when you drive an ADC Oct. 20, 2016
User guide DEM-OPA-SO-1A User's Guide (Rev. B) Apr. 12, 2012
User guide DEM-OPA-SO-1B User's Guide (Rev. D) Apr. 12, 2012
User guide DEM-OPA-SOT-1A User's Guide (Rev. B) Apr. 12, 2012
User guide DEM-OPA-SO-1B User's Guide (Rev. C) Apr. 22, 2011
Application note Transimpedance Considerations for High-Speed Operational Amplifiers Nov. 22, 2009
User guide DEM-OPA-SOT-1B User's Guide (Rev. B) Apr. 12, 2006
User guide DEM-OPA-SOT-1A User's Guide (Rev. A) Mar. 22, 2006
User guide DEM-OPA-SO-1A User's Guide (Rev. A) Mar. 16, 2006
Application note Using a decompensated op amp for improved performance Mar. 11, 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers Apr. 22, 2004
Application note 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 BOARD Download
document-generic User guide
5
Description

The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

EVALUATION BOARD Download
document-generic User guide
5
Description

The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.

Design tools & simulation

SIMULATION MODEL Download
SBOC005C.ZIP (40 KB) - PSpice Model
SIMULATION MODEL Download
SBOC097B.TSC (98 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOM179A.ZIP (4 KB) - TINA-TI Spice Model
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 (...)
document-generic User guide
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.

(...)

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options

Ordering & quality

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

Support & training

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