Product details


2nd harmonic (dBc) 99 3rd harmonic (dBc) 94 @ MHz 100 Acl, min spec gain (V/V) 2 Approx. price (US$) 6.20 | 1ku Architecture Fully Differential ADC Driver BW @ Acl (MHz) 6200 Device type RF FDA Features Shutdown GBW (Typ) (MHz) 8000 Number of channels (#) 1 Operating temperature range (C) -40 to 85 Slew rate (Typ) (V/us) 17500 Total supply voltage (Min) (+5V=5, +/-5V=10) 3.15 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.25 Vn at flatband (Typ) (nV/rtHz) 1.25 Vn at 1 kHz (Typ) (nV/rtHz) 3.8 Vos (offset voltage @ 25 C) (Max) (mV) 1.2 open-in-new Find other RF FDAs

Package | Pins | Size

UQFN (RMS) 14 6 mm² 2.5 x 2.5 open-in-new Find other RF FDAs


  • Gain Bandwidth Product (GBP): 8 GHz
  • Excellent Linearity Performance:
    DC to 2 GHz, G = 12 dB
  • Slew Rate: 17,500 V/µs
  • Low HD2, HD3 Distortion
    (1 VPP, 200 Ω, DE-DE, G = 12 dB):
    • 100 MHz: HD2 at –104 dBc, HD3 at –96 dBc
    • 200 MHz: HD2 at –95 dBc, HD3 at –92 dBc
    • 500 MHz: HD2 at –80 dBc, HD3 at –77 dBc
    • 1 GHz: HD2 at –64 dBc, HD3 at –58 dBc
  • Low IMD2, IMD3 Distortion
    (2 VPP, 200 Ω, DE-DE, G = 12 dB):
    • 200 MHz: IMD2 at –96 dBc, IMD3 at –95 dBc
    • 500 MHz: IMD2 at –80 dBc, IMD3 at –83 dBc
    • 1 GHz: IMD2 at –70 dBc, IMD3 at –63 dBc
  • Input Voltage Noise: 1.25 nV/√Hz
  • Input Current Noise: 3.5 pA/√Hz
  • Supports Single- and Dual-Supply Operation
  • Power Consumption: 55 mA
  • Power-Down Feature

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The LMH5401 device is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, dc-coupled, time-domain applications. The device is ideal for dc- or ac-coupled applications that may require a single-ended-to-differential (SE-DE) conversion when driving an analog-to-digital converter (ADC). The LMH5401 generates very low levels of second- and third-order distortion when operating in SE-DE or differential-to-differential (DE-DE) mode.

The amplifier is optimized for use in both SE-DE and DE-DE systems. The device has unprecedented usable bandwidth from DC to 2 GHz. The LMH5401 can be used for SE-DE conversions in the signal chain without external baluns in a wide range of applications such as test and measurement, broadband communications, and high-speed data acquisition.

A common-mode reference input pin aligns the amplifier output common-mode with the ADC input requirements. Power supplies between 3.3 V and 5 V can be selected and dual-supply operation is supported when required by the application. A power-down feature is also available for power savings.

This level of performance is achieved at a very low power level of 275 mW when a 5-V supply is used. The device is fabricated in Texas Instruments’ advanced complementary BiCMOS process and is available in a space-saving, UQFN-14 package for higher performance.

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Technical documentation

= Featured
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet LMH5401 8-GHz, Low-Noise, Low-Power, Fully-Differential Amplifier datasheet (Rev. D) Feb. 23, 2018
More literature The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Application notes ADC32RF45: Amplifier to ADC Interface (Rev. A) Sep. 07, 2016
Technical articles How to use a fully differential amplifier as a level shifter Jul. 13, 2016
Technical articles Disentangling RF amplifier specs: amplifier spot noise vs. noise figure Feb. 05, 2016
User guides TSW12J54EVM User's Guide Oct. 21, 2015
User guides TSW54J60 Evaluation Module User's Guide (Rev. A) Sep. 21, 2015
Technical articles How to optimize differential amplifier noise Jul. 07, 2015
User guides LMH5401EVM Evaluation Module (EVM) (Rev. A) Mar. 27, 2015
Technical articles Differential to single ended: What happens when you use only one differential amplifier output Mar. 04, 2015

Design & development

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

Hardware development

document-generic User guide

The LMH5401EVM is an evaluation module for the single LMH5401 amplifier in a 14-lead high performance RF 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 (...)

  • Configured for split-supply operation and easily modified for single supply
  • Single ended or differential input signals
  • Fully differential output
  • Designed for easy connection to standard 50-Ω input/output impedance test equipment
  • Inputs and outputs include SMA connectors
document-generic User guide

RF Sampling 4GSPS ADC with 8GHz DC-Coupled Fully differential Amplifier. Provides a wide bandwidth high performance AC- or DC-coupled capture platform with up to 2 GHz of continous capture bandwidth. Built-in DDC functions enable tuning, down-conversion and bandwidth reduction of captured signals (...)


  • 12-bit 4GSPS ADC - ADC12J4000
  • 8GHz Fully Differential Amplifier - LMH5401
  • 4.8 GHz Low Phase Noise PLL/VCO TRF3765
  • Clock Jitter Cleaner LMK04828
  • Complete TI Power Solution
  • 2GHz Butterworth Low Pass Filter Design

Design tools & simulation

SBOJ019.ZIP (87 KB) - Spice Model
SBOM919B.TSC (365 KB) - TINA-TI Reference Design
SBOM920B.ZIP (10 KB) - TINA-TI Spice Model

Reference designs

Scalable 20.8 GSPS reference design for 12 bit digitizers
TIDA-010128 — This reference design describes a 20.8 GSPS sampling system using RF sampling analog-to-digital converters (ADCs) in time interleaved configuration. Time interleaving method is a proven and traditional way of increasing sample rate, however, matching individual ADCs offset, gain and sampling time (...)
document-generic Schematic document-generic User guide
Reference design synchronizing data converter DDC and NCO features for multi-channel RF systems
TIDA-010122 — This reference design provides the solution for synchronization design challenges associated with emerging 5G adapted applications like massive multiple input multiple output (mMIMO), phase array RADAR and communication payload. The typical RF front end contains antenna, low noise amplifier (LNA (...)
document-generic Schematic document-generic User guide
12.8-GSPS analog front end reference design for high-speed oscilloscope and wide-band digitizer
TIDA-01028 — This reference design provides a practical example of interleaved RF-sampling analog-to-digital converters (ADCs) to achieve a 12.8-GSPS sampling rate. This is achieved by time-terleaving two RF-sampling ADCs. Interleaving requires a phase shift between the ADCs, which this reference design achieves (...)
document-generic Schematic document-generic User guide
160-MHz Bandwidth Wireless Signal Tester Reference Design
TIDA-00988 — This reference design implements an IF subsystem for a standard wireless signal tester with an active balun-amplifier (LMH5401), LC bandpass filter, 16-bit ADC (ADC31JB68) and clock cleaner and generator PLL (LMK04828). Measurements using modulated signals demonstrate reception of the signal with (...)
document-generic Schematic document-generic User guide
Low noise power-supply reference design maximizing performance in 12.8 GSPS data acquisition systems
TIDA-01027 — This reference design demonstrates an efficient, low noise 5-rail power-supply design for very high-speed DAQ systems capable of > 12.8 GSPS. The power supply DC/DC converters are frequency synchronized and phase-shifted in order to minimize input current ripple and control frequency content (...)
document-generic Schematic document-generic User guide
High Speed, Linear Transimpedance Reference Design
TIDA-01350 — The high-speed, linear transimpedance amplifier reference design is a high-speed, linear, two-stage transimpedance amplifier (TIA) application which uses the LMH5401 fully differential amplifier (FDA). Included in the reference design is a photo diode with integrated fiber pigtail. The provided (...)
document-generic Schematic document-generic User guide
Flexible 3.2-GSPS multi-channel AFE reference design for DSOs, radar and 5G wireless test systems
TIDA-01022 — This high speed multi-channel data capture reference design enables optimum system performance. System designers needs to consider critical design parameters like clock jitter and skew for high speed multi-channel clock generation, which affects overall system SNR, SFDR, channel to channel skew and (...)
document-generic Schematic document-generic User guide
RF Sampling 4-GSPS ADC Reference Design with 8-GHz DC-Coupled Differential Amplifier
TIDA-00431 Wideband radio frequency (RF) receivers allow greatly increased flexibility in radio designs. The wide instantaneous bandwidth allows flexible tuning without changing hardware and the ability to capture multiple channels at widely separated frequencies.

This reference design describes a wideband RF (...)

document-generic Schematic document-generic User guide
High-Bandwidth Arbitrary Waveform Generator Reference Design: DC or AC coupled, High-Voltage output
TIDA-00684 — In TIDA-00684 reference design a quad-channel TSW3080 evaluation module (EVM) is developed to shows how to use an active amplifier interface with the DAC38J84 to demonstrate an arbitrary-waveform-generator frontend. The DAC38J84 provides four DAC channels with 16 bits of resolution with a maximum (...)
document-generic Schematic document-generic User guide
50-Ohm 2-GHz Oscilloscope Front-end Reference Design
TIDA-00826 This reference design is part of an analog front-end for 50Ω-input oscilloscope application. System designers can readily use this evaluation platform to process input signals from DC to 2 GHz in both frequency-domain and time-domain applications.
document-generic Schematic document-generic User guide
Two Stage Cascaded 8GHz Amplifier Reference Design Board
TIDA-00659 This board cascades two LMH5401 or LMH3401 amplifiers for more gain or more DC common mode shift.
document-generic Schematic document-generic User guide
Cascaded LMH5401 and LMH6401 Reference Design
TIDA-00654 A wideband single-ended to differential conversion reference design in both DC- and AC- coupled applications is presented. The design evaluates the performance of the LMH5401 and LMH6401 cascade and offers insight into the design.
document-generic Schematic document-generic User guide
Low Gain Amplifier Reference Design
TIDA-00522 This board allows the LMH5401 to be used as a low gain amplifier or as an attenuator.
document-generic Schematic document-generic User guide

CAD/CAE symbols

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UQFN (RMS) 14 View options

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TI Precision Labs – Fully Differential Amplifiers – Noise Analysis, Advanced Compensation Techniques and Variable Gain FDAs

This video discusses the various noise sources of an FDA and the effects of using large resistors in the feedback network of high-speed FDAs.

Posted: 10-Jan-2017
Duration: 15:54

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