Rail-to-Rail Output Wideband Fully Differential Amplifier


Product details


Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.25 BW @ Acl (MHz) 620 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 570 Vn at flatband (Typ) (nV/rtHz) 2 Iq per channel (Typ) (mA) 14.2 Rail-to-rail Out Vos (offset voltage @ 25 C) (Max) (mV) 2.5 Operating temperature range (C) -40 to 85 Output current (Typ) (mA) 105 2nd harmonic (dBc) 115 3rd harmonic (dBc) 123 GBW (Typ) (MHz) 1200 Input bias current (Max) (pA) 10000000 @ MHz 0.1 CMRR (Typ) (dB) 84 open-in-new Find other Fully differential amplifiers

Package | Pins | Size

VQFN (RGT) 16 9 mm² 3 x 3 open-in-new Find other Fully differential amplifiers


  • Fully Differential Architecture With Rail-to-Rail Outputs
  • Centered Input Common-mode Range
  • Minimum Gain of 1 V/V (0 dB)
  • Bandwidth: 620 MHz
  • Slew Rate: 570 V/µs
  • 0.1% Settling Time: 7 ns
  • HD2: –115 dBc at 100 kHz, VOD = 8 VPP
  • HD3: –123 dBc at 100 kHz, VOD = 8 VPP
  • Input Voltage Noise: 2 nV/Hz (f >10 kHz)
  • Output Common-Mode Control
  • Power Supply:
    • Voltage: 3.3 V (±1.65 V) to 5 V (±2.5 V)
    • Current: 14.2 mA
  • Power-Down Capability: 15 µA
    • 5-V and 3.3-V Data Acquisition Systems
    • High Linearity ADC Amplifier
    • Wireless Communication
    • Test and Measurement
    • Voice Processing Systems

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The THS4520 is a wideband, fully differential operational amplifier designed for 5-V data acquisition systems. It has very low noise at 2 nV/ load. The slew rate is 570 V/µs, and with a settling time of 7 ns to 0.1% (2-V step), it is ideal for data acquisition applications. It is designed for unity gain stability.

To allow for dc coupling to ADCs, its unique output common-mode control circuit maintains the output common-mode voltage within 0.25 mV offset (typical) from the set voltage. The common-mode set point defaults to mid-supply by internal circuitry, which may be over-driven from an external source.

The input and output are optimized for best performance with their common-mode voltages set to mid-supply. Along with high performance at low power supply voltage, this makes for extremely high performance single supply 5-V and 3.3-V data acquisition systems.

The THS4520 is offered in a Quad 16-pin leadless QFN package (RGT), and is characterized for operation over the full industrial temperature range from –40°C to 85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet Wideband, Low Noise, Low Distortion, Fully Differential Amplifier datasheet (Rev. B) Mar. 15, 2007
Application note Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Application note Q4 2009 Issue Analog Applications Journal Sep. 24, 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
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
Technical articles How to use a fully differential amplifier as a level shifter Jul. 13, 2016
Technical articles What you need to know about internal ESD protection on integrated circuits Dec. 02, 2015
Application note Using fully differential op amps as attenuators, Part 3 Oct. 04, 2009
Application note Using fully differential op amps as attenuators, Part 2 Jul. 14, 2009
Application note Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

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Hardware development


THS4520EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4520EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 0 dB and 50 Ω (...)

  • Configured with 50 Ω input/output impedance
  • 1:1 Transformer on output
  • Power Supply: 3 V (±1.5 V) to 5 V (±2.5 V)
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points
  • Input and Output signals are via SMA connectors
  • Power connectors are via banana jack

Design tools & simulation

SBOC225B.ZIP (29 KB) - PSpice Model
SLOM156B.ZIP (5 KB) - TINA-TI Spice Model
SLOM157B.TSC (55 KB) - TINA-TI Reference Design
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  • 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
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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 (...)
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CAD/CAE symbols

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Ordering & quality

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