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THS4541

ACTIVE

High-Speed Differential I/O Amplifier

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Data sheet

THS4541

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.4 BW at Acl (MHz) 620 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1500 Architecture Bipolar, Fully Differential ADC Driver Vn at flatband (typ) (nV√Hz) 2.2 Iq per channel (typ) (mA) 10.1 Rail-to-rail In to V-, Out Vos (offset voltage at 25°C) (max) (mV) 0.45 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 100 2nd harmonic (dBc) 140 3rd harmonic (dBc) 140 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (typ) (MHz) 850 Input bias current (max) (pA) 13000000 Features Decompensated, Shutdown CMRR (typ) (dB) 100 Rating Catalog
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.4 BW at Acl (MHz) 620 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1500 Architecture Bipolar, Fully Differential ADC Driver Vn at flatband (typ) (nV√Hz) 2.2 Iq per channel (typ) (mA) 10.1 Rail-to-rail In to V-, Out Vos (offset voltage at 25°C) (max) (mV) 0.45 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 100 2nd harmonic (dBc) 140 3rd harmonic (dBc) 140 Frequency of harmonic distortion measurement (MHz) 0.1 GBW (typ) (MHz) 850 Input bias current (max) (pA) 13000000 Features Decompensated, Shutdown CMRR (typ) (dB) 100 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3 WQFN (RUN) 10 4 mm² 2 x 2
  • Fully differential amplifier (FDA) architecture
  • Bandwidth: 500MHz (G = 2V/V)
  • Gain bandwidth product: 850MHz
  • Slew rate: 1500V/µs
  • HD2: –95dBc at 10MHz (2VPP, RL = 500Ω)
  • HD3: –90dBc at 10MHz (2VPP, RL = 500Ω)
  • Input voltage noise: 2.2nV/√Hz (f > 100kHz)
  • Low offset drift: ±0.5µV/°C (typical)
  • Negative rail input (NRI)
  • Rail-to-rail output (RRO)
  • Robust operation for Rload ≥ 50Ω
  • Output common-mode control
  • Power supply:
    • Single-supply voltage range: 2.7V to 5.4V
    • Split-supply voltage range: ±1.35V to ±2.7V
    • Quiescent current: 10.1mA (5V supply)
  • Power-down capability: 2µA (typical)
  • Fully differential amplifier (FDA) architecture
  • Bandwidth: 500MHz (G = 2V/V)
  • Gain bandwidth product: 850MHz
  • Slew rate: 1500V/µs
  • HD2: –95dBc at 10MHz (2VPP, RL = 500Ω)
  • HD3: –90dBc at 10MHz (2VPP, RL = 500Ω)
  • Input voltage noise: 2.2nV/√Hz (f > 100kHz)
  • Low offset drift: ±0.5µV/°C (typical)
  • Negative rail input (NRI)
  • Rail-to-rail output (RRO)
  • Robust operation for Rload ≥ 50Ω
  • Output common-mode control
  • Power supply:
    • Single-supply voltage range: 2.7V to 5.4V
    • Split-supply voltage range: ±1.35V to ±2.7V
    • Quiescent current: 10.1mA (5V supply)
  • Power-down capability: 2µA (typical)

The THS4541 is a low-power, voltage-feedback, fully differential amplifier (FDA) with an input common-mode range below the negative rail, and rail-to-rail output. The THS4541 is designed for low-power data acquisition systems where high density is critical in a high-performance analog-to-digital converter (ADC) or digital-to-analog converter (DAC) interface design.

The THS4541 features the negative-rail input required when interfacing a dc-coupled, ground-centered, source signal. This negative-rail input, with rail-to-rail output, allows for easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single 2.7V to 5.4V power supply.

The THS4541 is characterized for operation over the wide temperature range of –40°C to +125°C and is available in 16-pin VQFN and 10-pin WQFN packages.

The THS4541 is a low-power, voltage-feedback, fully differential amplifier (FDA) with an input common-mode range below the negative rail, and rail-to-rail output. The THS4541 is designed for low-power data acquisition systems where high density is critical in a high-performance analog-to-digital converter (ADC) or digital-to-analog converter (DAC) interface design.

The THS4541 features the negative-rail input required when interfacing a dc-coupled, ground-centered, source signal. This negative-rail input, with rail-to-rail output, allows for easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single 2.7V to 5.4V power supply.

The THS4541 is characterized for operation over the wide temperature range of –40°C to +125°C and is available in 16-pin VQFN and 10-pin WQFN packages.
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THS4541-DIE ACTIVE Bare die 850-MHz precision fully differential amplifier The THS4541-DIE is a bare die version of the device that is designed small systems or for use in multi-chip modules (MCMs).

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* Data sheet THS4541 Negative Rail Input, Rail-to-Rail Output, Precision, 850MHz Fully Differential Amplifier datasheet (Rev. B) PDF | HTML 22 Feb 2024
Application note Sampling the DC Bin: Designing DC-Coupled Amplifier Frontends for High-Speed ADCs PDF | HTML 29 Jan 2026
Application brief Why Use an FDA to Drive an ADC? PDF | HTML 08 Jan 2026
Application brief Active Filter Design for Differential ADCs (Rev. A) PDF | HTML 08 Oct 2025
Product overview High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End PDF | HTML 10 Apr 2025
Product overview Pairing ADC Drivers With Fully-Differential Input ADCs for Wide Bandwidth Data Acquisition 01 Apr 2024
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 29 Apr 2022
Application note High Speed ADCs and Amplifiers for Flow Cytometry Applications 12 Oct 2020
Application brief Maximizing System Total Harmonic Distortion Using High Speed Amplifiers 20 Jun 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Design for a Wideband Differential Transimpedance DAC Output (Rev. A) 17 Oct 2016
Design guide Optical Front-End System Design Guide 26 Oct 2015
Analog Design Journal Using single-supply fully diff. amps with neg. input voltages to drive ADCs 15 Nov 2010
Analog Design Journal Input impedance matching with fully differential amplifiers 22 Oct 2008
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

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