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Product details

Parameters

Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3.3 Total supply voltage (Max) (+5V=5, +/-5V=10) 6 BW @ Acl (MHz) 70 Acl, min spec gain (V/V) 10 Slew rate (Typ) (V/us) 500 Architecture Fully Differential ADC Driver, High Input Impedance Vn at flatband (Typ) (nV/rtHz) 4.2 Iq per channel (Typ) (mA) 2 Rail-to-rail Out Vos (offset voltage @ 25 C) (Max) (mV) 10 Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 20 2nd harmonic (dBc) -115 3rd harmonic (dBc) -118 @ MHz 0.1 GBW (Typ) (MHz) 220 Input bias current (Max) (pA) 750 Features Shutdown Gain (Max) (dB) 20 CMRR (Typ) (dB) 80 open-in-new Find other Fully differential amplifiers

Package | Pins | Size

WQFN (RUN) 10 4 mm² 2 x 2 open-in-new Find other Fully differential amplifiers

Features

  • Gain Bandwidth Product (GBWP): 220 MHz
  • Slew Rate: 500 V/µs
  • Bandwidth: 42 MHz (G = 10 V/V)
  • Voltage Noise: 4.2 nV/√ Hz
  • Supply Current (IQ): 2 mA
  • IQ : 28 µA (Shutdown)
  • Rail-to-Rail Output (RRO)
  • High Impedance CMOS Inputs
  • Independent Input and Output Common-Mode Control
  • Disable Input Common-Mode Loop to Use as a Standard Fully Differential Amplifier (FDA)
  • Single-Supply Range: 3.3 V to 5.5 V
  • Split-Supply Range: ±1.65 V to ±2.75 V
  • Operating Temperature Range: -40°C to 125°C
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Description

The THS4567 device is a novel fully-differential amplifier (FDA) that includes independent input common-mode (VICM) and output-common mode (VOCM) control. Standard FDAs only possess output common-mode control. The THS4567 is a decompensated amplifier with a minimum stable gain of 10 V/V.

The THS4567 operates as a fully differential transimpedance amplifier (TIA) and analog-to-digital converter (ADC) driver in a single integrated stage.

The VICM loop decouples the reverse bias across the photodiode(PD) from the amplifiers input and output swing compliance ranges thereby allowing the designer to maximize the PD reverse bias and minimize the PD capacitance. The VICM loop can be disabled which then allows the THS4567 to operate as a standard FDA.

The VOCM loop sets the differential output common-mode voltage and is typically set at the subsequent ADC stage common-mode reference voltage.

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Technical documentation

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Type Title Date
* Data sheet THS4567 220 MHz, High Input Impedance, Fully Differential Amplifier with Independent Input and Output Common-Mode Control datasheet Oct. 29, 2020
User guide RUN_FDA_4567 EVM User's Guide Nov. 23, 2020
Technical article How to minimize filter loss when you drive an ADC Oct. 20, 2016
Technical article Go differential to differentiate your precision design Aug. 11, 2016
Technical article How to use a fully differential amplifier as a level shifter Jul. 13, 2016
Technical article What you need to know about internal ESD protection on integrated circuits Dec. 02, 2015
Application note Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
25
Description
The RUN-FDA-4567-EVM is an unassembled evaluation module (EVM) for fully differential amplifiers with input common mode control, such as, the THS4567 in the RUN (VQFN-16) package. This EVM is designed to quickly and easily demonstrate the functionality and versatility of the amplifier. The EVM is (...)
Features
  • Configured for split supply operation and modified for single supply
  • Configurable for input common mode control with optional diode input footprint
  • Includes connections for termination resistors to match to standard 50-Ω input/output impedance test equipment
  • Inputs and outputs use standard SMA (...)

Design tools & simulation

SIMULATION MODEL Download
SBOMBJ5.TSC (1388 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOMBK5.ZIP (50 KB) - PSpice Model
SIMULATION TOOL 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 TOOL 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
QFN (RUN) 10 View options

Ordering & quality

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