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LMH5401IRMST

8GHz fully differential amplifier, 17500V/µs SR, 1.25nV/√Hz, SE-DE conversion, UQFN-14

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Manufacturer Part：

LMH5401IRMST

Package：

UQFN-14 (3.0 x 3.0 x 0.9 mm)

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Description

Product Overview

The LMH5401IRMST from Texas Instruments is an 8-GHz ultra-wideband fully differential amplifier optimized for RF, IF, and high-speed time-domain applications. With 17,500 V/µs slew rate and 1.25 nV/√Hz input noise, it delivers exceptional linearity from DC to 2 GHz in a compact UQFN-14 package, consuming only 275 mW at 5V supply.

Key Specifications

Gain Bandwidth Product 8 GHz
Slew Rate 17,500 V/µs
Input Voltage Noise 1.25 nV/√Hz
HD2 (100MHz, 1VPP) -104 dBc
HD3 (100MHz, 1VPP) -96 dBc
Supply Current 55 mA
Supply Voltage 3.3V to 5V
Operating Temperature -40°C to +85°C
Package UQFN-14 (3.0 x 3.0 mm)

Features

  • 8 GHz gain bandwidth product
  • 17,500 V/µs slew rate
  • Very low HD2/HD3 distortion to 2 GHz
  • 1.25 nV/√Hz input voltage noise
  • Single-ended to differential (SE-DE) conversion
  • Common-mode reference input for ADC alignment
  • Power-down feature for power savings
  • Only 275 mW power consumption at 5V

Applications

  • GSPS ADC driver
  • High-speed data acquisition
  • Broadband communications
  • IF/RF gain blocks and SAW filter buffers
  • Test and measurement equipment
  • 1GbE over microwave ADC driver

The LMH5401IRMST is a very high-performance fully differential amplifier from Texas Instruments, optimized for RF, IF, and high-speed DC-coupled time-domain applications. With an 8 GHz gain bandwidth product and 17,500 V/µs slew rate, it provides unprecedented usable bandwidth from DC to 2 GHz. It is ideal for single-ended-to-differential (SE-DE) conversion when driving high-speed ADCs, generating extremely low second- and third-order distortion. The device consumes only 275 mW at 5V and includes a power-down feature.

The LMH5401 operates through four key subsystems: (1) Differential Input Stage: A high-impedance differential input pair with 1.25 nV/√Hz noise density accepts single-ended or differential signals. The VOCM pin sets the output common-mode voltage to match ADC requirements. (2) Gain Stage: A voltage-feedback architecture provides 8 GHz GBP with programmable gain via external resistors. The device supports both SE-DE and DE-DE modes. (3) Output Stage: A low-distortion differential output driver achieves HD2 of -104 dBc and HD3 of -96 dBc at 100 MHz, capable of driving 200Ω loads directly. (4) Power Management: A PD (power-down) pin reduces supply current when the amplifier is not needed, and the device operates from single 3.3V to 5V or dual supplies.

Pin Name Type Description
1 VOCM Input Output common-mode voltage reference
2 VIN- Input Inverting input
3 VIN+ Input Non-inverting input
4 VSS Power Negative supply / ground
5 PD Input Power-down control (active high)
6 FB- Input Negative feedback node
7 VOUT- Output Negative differential output
8 VDD Power Positive supply (3.3V to 5V)
9 VOUT+ Output Positive differential output
10 FB+ Input Positive feedback node
11-14 NC/GND – No connect / ground pads
  • Driving GSPS ADCs in test and measurement equipment with SE-DE conversion
  • IF/RF gain block and SAW filter buffer in broadband communications
  • High-speed data acquisition front-end with DC to 2GHz bandwidth 1GbE microwave backhaul ADC driver Medical imaging and radar signal chain
Model Manufacturer GBP SR Notes
THS4541IRMST TI 2GHz 1500V/µs Lower speed alternative
ADA4932-1 ADI 1GHz 2800V/µs Lower cost option
LMH5401IRMSR TI 8GHz 17500V/µs Larger reel option
THS4551IRMST TI 150MHz 400V/µs Precision low-noise FDA
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Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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