THS4121

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3.3 V, 100 MHz, 43 V/us, Fully Differential CMOS Amplifier

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Product details

Parameters

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Total supply voltage (Max) (+5V=5, +/-5V=10) 3.5 BW @ Acl (MHz) 100 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 55 Vn at flatband (Typ) (nV/rtHz) 5.4 Iq per channel (Typ) (mA) 11 Rail-to-rail In to V+, Out Vos (offset voltage @ 25 C) (Max) (mV) 8 Operating temperature range (C) -40 to 85, 0 to 70 Output current (Typ) (mA) 25 2nd harmonic (dBc) 79 3rd harmonic (dBc) 93 GBW (Typ) (MHz) 100 Input bias current (Max) (pA) 1.2 @ MHz 1 CMRR (Typ) (dB) 96 open-in-new Find other Fully differential amplifiers

Package | Pins | Size

HVSSOP (DGN) 8 15 mm² 3 x 4.9 SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Fully differential amplifiers

Features

  • High Performance
    • 100 MHz –3 dB Bandwidth
    • 50 V/µs Slew Rate
    • –75 dB Total Harmonic Distortion at 1 MHz (VO = 2 VPP)
    • 5.4 nV/Hz Input-Referred Noise (10 kHz)
  • Differential Input/Differential Output
    • Balanced Outputs Reject Common-Mode Noise
    • Differential Reduced Second Harmonic Distortion
  • Power Supply Range
    • VDD = 3.3 V
  • KEY APPLICATIONS
    • Simple Single-Ended To Differential Conversion
    • Differential ADC Driver/Differential Antialiasing
    • Differential Transmitter And Receiver
    • Output Level Shifter

PowerPAD is a trademark of Texas Instruments.

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Description

The THS412x is one in a family of fully differential-input, differential-output devices fabricated using Texas Instruments’ state-of-the-art submicron CMOS process.

The THS412x consists of a true fully-differential signal path from input to output. This results in excellent common-mode noise rejection and improved total harmonic distortion.

open-in-new Find other Fully differential amplifiers
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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet THS4120, THS4121: High-Speed Fully Differential-I/O Amplifier datasheet (Rev. D) Oct. 13, 2004
White papers 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
Application notes Fully-Differential Amplifiers (Rev. E) Sep. 19, 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 notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005
Application notes High-Voltage Signal Conditioning for Differential ADCs Jun. 14, 2004
User guides THS4121 EVM User's Guide Jul. 11, 2001

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
49
Description

The THS4140EVM is a good example of PCB design and layout for high-speed operational amplifier applications. It is a complete circuit for the high-speed operational amplifier. The EVM is made of the THS4140 high-speed operational amplifier, a number of passive components, and various features and (...)

Features

THS4140 high-speed operational amplifier EVM features include:

  • Voltage supply operation range: 5-V to +/- 15-V operation (see the device datasheet)
  • Single and differential input and output capability
  • Nominal 50 ohm input and output termination resistors. They can be configured according to the (...)

Design tools & simulation

SIMULATION MODELS Download
SLOJ158.ZIP (5 KB) - PSpice 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

CAD/CAE symbols

Package Pins Download
HVSSOP (DGN) 8 View options
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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