THS4551

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Low Noise, Precision, 150MHz, Fully Differential Amplifier

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Product details

Parameters

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.4 BW @ Acl (MHz) 150 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 220 Vn at flatband (Typ) (nV/rtHz) 3.3 Iq per channel (Typ) (mA) 1.35 Rail-to-rail In to V-, Out Vos (offset voltage @ 25 C) (Max) (mV) 0.175 Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 45 2nd harmonic (dBc) 128 3rd harmonic (dBc) 139 GBW (Typ) (MHz) 135 Input bias current (Max) (pA) 1500000 @ MHz 0.1 CMRR (Typ) (dB) 110 open-in-new Find other Fully differential amplifiers

Package | Pins | Size

VQFN (RGT) 16 9 mm² 3 x 3 VSSOP (DGK) 8 15 mm² 3 x 4.9 WQFN (RUN) 10 4 mm² 2 x 2 open-in-new Find other Fully differential amplifiers

Features

  • Bandwidth: 150 MHz (G = 1 V/V)
  • Differential Output Slew Rate: 220 V/µs
  • Gain Bandwidth Product: 135 MHz
  • Negative Rail Input (NRI),
    Rail-to-Rail Output (RRO)
  • Wide Output Common-Mode Control Range
  • Single-Supply Operating Range: 2.7 V to 5.4 V
  • Trimmed-Supply Current: 1.37 mA at 5 V
  • 25°C Input Offset: ±175 µV (max)
  • Input Offset Voltage Drift: ±1.8 µV/°C (max)
  • Differential Input Voltage Noise: 3.3 nV/√Hz
  • HD2: –128 dBc at 2 VPP, 100 kHz
  • HD3: –139 dBc at 2 VPP, 100 kHz
  • < 50-ns Settling Time: 4-V Step to 0.01%
  • 18-Bit Settling Time: 4-V Step, < 500 ns

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Description

The THS4551 fully differential amplifier offers an easy interface from single-ended sources to the differential output required by high-precision analog-to-digital converters (ADCs). Designed for exceptional dc accuracy, low noise, and robust capacitive load driving, this device is well suited for data acquisition systems where high precision is required along with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.

The THS4551 features the negative rail input required when interfacing a dc-coupled, ground-centered, source signal to a single-supply differential input ADC. Very low dc error and drift terms support the emerging 16- to 20-bit successive-approximation register (SAR) input requirements. A wide-range output common-mode control supports the ADC running from 1.8-V to 5-V supplies with ADC common-mode input requirements from 0.7 V to greater than 3.0 V.

The THS4551 device is characterized for operation over the wide temperature range of –40°C to +125°C, and is available in 8-pin VSSOP, 16-pin VQFN, and 10-pin WQFN packages.



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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet THS4551 Low-Noise, Precision, 150-MHz, Fully Differential Amplifier datasheet (Rev. C) Jul. 24, 2017
Application notes Setting a Constant Common-Mode Voltage for Fully-Differential SAR ADC Inputs Sep. 06, 2019
Application notes High-input impedance, true differential, AFE attenuator circuit for SAR ADCs (Rev. A) Mar. 08, 2019
Application notes True differential, 4 × 2 MUX, analog front end, simultaneous-sampling ADC circui (Rev. A) Nov. 15, 2018
Application notes Maximizing System Total Harmonic Distortion Using High Speed Amplifiers Jun. 20, 2018
Application notes Attenuator Amplifier Design to Maximize the Input Voltage of Differential ADCs Jun. 14, 2018
Application notes High-current battery monitor circuit: 0–10A, 0-10kHz, 18 bit Dec. 22, 2017
Application notes Precision Sum Circuit Support Hi Output Current Multiple AFEs in Ultasound App Nov. 20, 2017
Technical articles Powering up the performance of sensitive test and measurement systems Oct. 17, 2017
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical articles What you need to know about input bias current – and why Dec. 08, 2016
Technical articles How to minimize filter loss when you drive an ADC Oct. 20, 2016
Technical articles Go differential to differentiate your precision design Aug. 11, 2016
Application notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS127L01EVM is an evaluation platform for the ADS127L01. The ADS127L01 is a 24-bit, delta-sigma analog-to-digital converter (ADC) with data rates up to 512 kSPS. It offers a unique combination of excellent dc accuracy and outstanding ac perforamnce. The high-order, chopper-stabilized modulator (...)

Features
  • Includes all require support circuitry for the ADS127L01
  • Enhanced evaluation software enables quicker configuration and analysis
  • Configurable inputs, references, supplies and clock sources
  • Easily accessible signals via testpoints and headers
EVALUATION BOARDS Download
document-generic User guide
149
Description

The ADS9224R evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9224R successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 16-bit, 3-MSPS device. ADS9224REVM-PDK (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS9224R ADC
  • USB powered; no external power supply required
  • PHI controller provides a convenient communication interface to ADS9224R ADC over USB 2.0 (or higher) for power (...)
EVALUATION BOARDS Download
document-generic User guide
99
Description
The THS4551DGKEVM is an evaluation module for the single THS4551 amplifier in the DGK (VSSOP-8) 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 instruments (...)
Features
  • Configured for split-supply operation and easily modified for single supply
  • Default gain of 1 configuration is easily reconfigured for other gains
  • Designed for easy connection to standard 50-Ω input/output impedance test equipment
  • Inputs and outputs include SMA connectors
EVALUATION BOARDS Download
document-generic User guide
99
Description
The THS4551RGTEVM is an evaluation module for the single THS4551 amplifier in the RGT (WQFN-10) 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 instruments (...)
Features
  • Configured for split-supply operation, and easily modified for single supply
  • Default gain of 1 configuration is easily reconfigured for other gains
  • Designed for easy connection to standard 50-Ω input/output impedance test equipment
  • Inputs and outputs include SMA connectors
EVALUATION BOARDS Download
document-generic User guide
99
Description
The THS4551RUNEVM is an evaluation module for the single THS4551 amplifier in the RUN (WQFN-10) 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 instruments (...)
Features
  • Configured for split-supply operation and easily modified for single supply
  • Default gain of 1 configuration is easily reconfigured for other gains
  • Designed for easy connection to standard 50-Ω input/output impedance test equipment
  • Inputs and outputs include SMA connectors

Software development

SUPPORT SOFTWARE Download
SBOC461.ZIP (66 KB)
SUPPORT SOFTWARE Download
SBOC462.ZIP (67 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOC459.ZIP (80 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOC460.ZIP (147 KB) - TINA-TI Spice Model
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SBOC463.ZIP (198 KB) - TINA-TI Spice Model
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SBOC464.ZIP (199 KB) - TINA-TI Spice Model
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SBOC465.ZIP (201 KB) - TINA-TI Spice Model
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SBOC466.ZIP (228 KB) - TINA-TI Spice Model
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SBOC467.ZIP (118 KB) - TINA-TI Spice Model
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SBOC468.ZIP (87 KB) - TINA-TI Spice Model
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SBOC469.ZIP (118 KB) - TINA-TI Spice Model
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SBOC470.ZIP (10 KB) - TINA-TI Spice Model
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SBOC471.ZIP (171 KB) - TINA-TI Spice Model
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SBOC472.ZIP (89 KB) - TINA-TI Spice Model
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SBOC473.ZIP (218 KB) - TINA-TI Spice Model
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SBOC474.ZIP (101 KB) - TINA-TI Spice Model
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SBOC475.ZIP (117 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOC476.ZIP (68 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOC477.ZIP (119 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMA28B.TSM (17 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMA29B.TSC (79 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOMB92.ZIP (20 KB) - PSpice Model
SIMULATION MODELS Download
SLOC341.ZIP (107 KB) - TINA-TI Spice Model
SIMULATION TOOLS 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 TOOLS 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

Reference designs

Many TI reference designs include the THS4551 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
QFN (RUN) 10 View options
VQFN (RGT) 16 View options
VSSOP (DGK) 8 View options

Ordering & quality

Support & training

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