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High-speed op amps (GBW ≥ 50 MHz)

LMH6704

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650 MHz Selectable Gain Buffer with Disable

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Data sheet

LMH6704

ACTIVE
Data sheet Order now

Product details

Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 650 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3000 Vn at flatband (typ) (nV√Hz) 9.3 Iq per channel (typ) (mA) 11.5 Vos (offset voltage at 25°C) (max) (mV) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Input bias current (max) (pA) 15000000 Offset drift (typ) (µV/°C) 35 Iout (typ) (mA) 90 2nd harmonic (dBc) 62 3rd harmonic (dBc) 78 Frequency of harmonic distortion measurement (MHz) 10
Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 650 BW at Acl (MHz) 650 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3000 Vn at flatband (typ) (nV√Hz) 9.3 Iq per channel (typ) (mA) 11.5 Vos (offset voltage at 25°C) (max) (mV) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Input bias current (max) (pA) 15000000 Offset drift (typ) (µV/°C) 35 Iout (typ) (mA) 90 2nd harmonic (dBc) 62 3rd harmonic (dBc) 78 Frequency of harmonic distortion measurement (MHz) 10
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Wideband operation
    • AV = +1, VO = 0.5 VPP 650 MHz
    • AV = +2, VO = 0.5 VPP 450 MHz
    • AV = +2, VO = 2 VPP 400 MHz
  • High output current ±90 mA
  • Very low distortion
    • 2nd/3rd harmonics (10 MHz, RL = 100Ω): −62/−78dBc
    • Differential gain/Differential phase: 0.02%/0.02°
  • Low noise 2.3nV/√Hz
  • High slew rate 3000 V/μs
  • Supply current 11.5 mA

All trademarks are the property of their respective owners.

  • Wideband operation
    • AV = +1, VO = 0.5 VPP 650 MHz
    • AV = +2, VO = 0.5 VPP 450 MHz
    • AV = +2, VO = 2 VPP 400 MHz
  • High output current ±90 mA
  • Very low distortion
    • 2nd/3rd harmonics (10 MHz, RL = 100Ω): −62/−78dBc
    • Differential gain/Differential phase: 0.02%/0.02°
  • Low noise 2.3nV/√Hz
  • High slew rate 3000 V/μs
  • Supply current 11.5 mA

All trademarks are the property of their respective owners.

The LMH6704 is a very wideband, DC coupled selectable gain buffer designed specifically for wide dynamic range systems requiring exceptional signal fidelity. The LMH6704 includes on chip feedback and gain set resistors, simplifying PCB layout while providing user selectable gains of +1, +2 and −1 V/V. The LMH6704 provides a disable pin, which places the amplifier in a high output impedance, low power mode. The Disable pin may be allowed to float high.

With a 650 MHz Small Signal Bandwidth (AV = +1), full power gain flatness to 200 MHz, and excellent Differential Gain and Phase, the LMH6704 is optimized for video applications. High resolution video systems will benefit from the LMH6704 ability to drive multiple video loads at low levels of differential gain or differential phase distortion.

The LMH6704 is constructed with proprietary high speed complementary bipolar process using proven current feedback circuit architectures. It is available in 8 Pin SOIC and 6 Pin SOT-23 packages.

The LMH6704 is a very wideband, DC coupled selectable gain buffer designed specifically for wide dynamic range systems requiring exceptional signal fidelity. The LMH6704 includes on chip feedback and gain set resistors, simplifying PCB layout while providing user selectable gains of +1, +2 and −1 V/V. The LMH6704 provides a disable pin, which places the amplifier in a high output impedance, low power mode. The Disable pin may be allowed to float high.

With a 650 MHz Small Signal Bandwidth (AV = +1), full power gain flatness to 200 MHz, and excellent Differential Gain and Phase, the LMH6704 is optimized for video applications. High resolution video systems will benefit from the LMH6704 ability to drive multiple video loads at low levels of differential gain or differential phase distortion.

The LMH6704 is constructed with proprietary high speed complementary bipolar process using proven current feedback circuit architectures. It is available in 8 Pin SOIC and 6 Pin SOT-23 packages.
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Technical documentation

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Type Title Date
* Data sheet LMH6704 650 MHz Selectable Gain Buffer with Disable datasheet (Rev. C) 18 Mar 2013
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
User guide AN-2095 LMH730316 SOT23-5 / SOT23-6 Hi Performance Amplifier Eval Board (Rev. B) 01 May 2013
Application note Generating Precision Clocks for Time- Interleaved ADCs 02 Aug 2007

Design & development

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Evaluation board

LMH730227 — Evaluation Board for High-Speed Single Op Amp in the 8-Pin SOIC Package

Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amp that are offered in the 8-Pin SOIC package. Resistors, capacitors, or any other surface-mount components can be easily mounted on this board in the desired circuit configuration. The (...)

User guide: PDF
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Evaluation board

LMH730316 — LMH730316 Evaluation Board for High-Speed Single Op Amp in the 5-/6-Pin SOT-23 Package

Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amp that are offered in the 5-/6-Pin SOT-23 package. This 4 layer board is designed to improve speed and reduce harmonic distortion by careful placement and routing of components and (...)

User guide: PDF
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Simulation model

LMH6704 PSpice Model

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Simulation model

LMH6704 TINA-TI Reference Design

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Calculation tool

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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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TINA-TI — SPICE-based analog simulation program

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 (...)
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SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 6 Ultra Librarian
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