ADS5421

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14-Bit, 40-MSPS Analog-to-Digital Converter (ADC)

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Product details

Parameters

Sample rate (Max) (MSPS) 40 Resolution (Bits) 14 Number of input channels 1 Interface type Parallel LVDS Analog input BW (MHz) 300 Features High Performance Rating Catalog Input range (Vp-p) 2, 4 Power consumption (Typ) (mW) 900 Architecture Pipeline SNR (dB) 76 ENOB (Bits) 12.1 SFDR (dB) 83 Operating temperature range (C) -40 to 85 Input buffer No open-in-new Find other High-speed ADCs (>10MSPS)

Package | Pins | Size

LQFP (PM) 64 100 mm² 10 x 10 open-in-new Find other High-speed ADCs (>10MSPS)

Features

  • HIGH DYNAMIC RANGE:
       High SFDR: 83dB at 10MHz fIN
       High SNR: 75dB at 10MHz fIN
  • ON-BOARD TRACK-AND-HOLD:
       Differential Inputs
       Selectable Full-Scale Input Range
  • LOW POWER: 850mW
  • FLEXIBLE CLOCKING:
       Differential or Single-Ended
       Accepts Sine or Square Wave Clocking Down to 0.5VPP
       Variable Threshold Level
  • APPLICATIONS
    • COMMUNICATIONS RECEIVERS
    • TEST INSTRUMENTATION
    • PROFESSIONAL CCD IMAGING

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open-in-new Find other High-speed ADCs (>10MSPS)

Description

The ADS5421 is a high-dynamic range 14-bit, 40MHz, pipelined Analog-to-Digital Converter (ADC). It includes a high-bandwidth linear track-and-hold amplifier that gives excellent spurious performance up to and beyond the Nyquist rate. The clock input can accept a low-level differential sine wave or square wave signal down to 0.5VPP, further improving the Signal-to-Noise Ratio (SNR) performance.

The ADS5421 has a 4VPP differential input range (2VPP • 2 inputs) for optimum Spurious-Free Dynamic Range (SFDR). The differential operation gives the lowest even-order harmonic components. A lower input voltage can also be selected using the internal references, further optimizing SFDR.

The ADS5421 is available in a small LQFP-64 package.

open-in-new Find other High-speed ADCs (>10MSPS)
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Technical documentation

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Type Title Date
* Data sheet 14-Bit, 40MHz Sampling Analog-to-Digital Converter datasheet (Rev. E) Jun. 22, 2005
Technical article Keys to quick success using high-speed data converters Oct. 13, 2020
Technical article How to achieve fast frequency hopping Mar. 03, 2019
Technical article RF sampling: Learning more about latency Feb. 09, 2017
Technical article Why phase noise matters in RF sampling converters Nov. 28, 2016
Application note Design Considerations for Avoiding Timing Errors during High-Speed ADC, LVDS Dat (Rev. A) May 22, 2015
Application note Why Use Oversampling when Undersampling Can Do the Job? (Rev. A) Jul. 19, 2013
Application note High-Speed, Analog-to-Digital Converter Basics Jan. 11, 2012
Application note Driving High-Speed ADCs: Circuit Topologies and System-Level Parameters (Rev. A) Sep. 10, 2010
Application note Smart Selection of ADC/DAC Enables Better Design of Software-Defined Radio Apr. 28, 2009
Application note CDCE72010 as a Clocking Solution for High-Speed Analog-to-Digital Converters Jun. 08, 2008
Application note Phase Noise Performance and Jitter Cleaning Ability of CDCE72010 Jun. 02, 2008
User guide ADS5421/22EVM Jan. 30, 2003

Design & development

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

Design tools & simulation

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
  • (...)
CALCULATION TOOL Download
Analog-to-digital converter (ADC) harmonic calculator
ADC-HARMONIC-CALC

    The ADC Harmonic Calculation tool is an excel based calculator for determining the location in frequency space of high order harmonics following Nyquist aliasing in an analog to digital converter.

    Given an ADC sample rate and the span of a signal of interest the calcultor will determine if the 2nd (...)

CALCULATION TOOL Download
Jitter and SNR Calculator for ADCs
JITTER-SNR-CALC JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.

CAD/CAE symbols

Package Pins Download
LQFP (PM) 64 View options

Ordering & quality

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