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Product details

Parameters

Resolution (Bits) 18 Number of input channels 1 Sample rate (Max) (kSPS) 580 Interface type Parallel Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Rating Catalog Reference mode Ext Input range (Max) (V) 4.2 Input range (Min) (V) 0 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 115 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 88 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 4 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TQFP (PFB) 48 81 mm² 9 x 9 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 580-kHz Sample Rate
  • 18-Bit NMC Ensured Over Temperature
  • Zero Latency
  • Low Power: 115 mW at 580 kHz
  • Unipolar Input Range
  • Onboard Reference Buffer and Conversion Clock
  • Wide Digital Supply
  • Flexible 8-/16-/18-Bit Parallel Interface
  • Pin Compatible With ADS8383
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Medical Instruments
    • Optical Networking
    • Transducer Interface
    • High Accuracy Data Acquisition Systems
    • Magnetometers

open-in-new Find other Precision ADCs (<=10MSPS)

Description

The ADS8381 is an 18-bit, 580 kHz A/D converter. The device includes a 18-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8381 offers a full 18-bit interface, a 16-bit option where data is read using two read cycles, or an 8-bit bus using three read cycles.

The ADS8381 is available in a 48-lead TQFP package and is characterized over the industrial –40°C to 85°C temperature range.

open-in-new Find other Precision ADCs (<=10MSPS)
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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 6
Type Title Date
* Datasheet 18-Bit, 580kHz, Unipolar Input, Micro Power Sampling Analog-to-Digital Converter datasheet (Rev. D) Feb. 09, 2005
White papers Voltage-reference impact on total harmonic distortion Aug. 01, 2016
White papers Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) Nov. 10, 2010
User guides ADS8381EVM User's Guide (Rev. A) Sep. 27, 2004

Design & development

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

Software development

IDES, CONFIGURATION, COMPILERS & DEBUGGERS Download
DCPFREETOOL Software Plug-In to Code Composer Studio
DCPFREETOOL The data converter support plug-in is a free tool, which allows the user of Code Composer Studio™ to create initialization data and configuration software for Texas Instruments data converters based on inputs on a graphical user interface.

IMPORTANT: Please read the following before downloading the (...)

Features

The data converter support plug-in (DCP) is a component of TI's Code Composer Studio™ and offers easy-to-use windows for the "point-and-click" configuration of TI's data converters from within the integrated development environment (IDE), preventing illegal combinations of settings. The DCP (...)

Design tools & simulation

SIMULATION MODELS Download
SLAM123.ZIP (51 KB) - IBIS 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
CALCULATION TOOLS Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
CALCULATION TOOLS 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
TQFP (PFB) 48 View options

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