ADS1675

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4MSPS, 24-Bit Analog-to-Digital Converter

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Product details

Parameters

Resolution (Bits) 24 Number of input channels 1 Sample rate (Max) (kSPS) 4000 Interface type Serial Architecture Delta-Sigma Input type Differential Multi-channel configuration Rating Catalog Reference mode Ext Input range (Max) (V) 3.5 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 575 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 107 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 251.7 Digital supply (Min) (V) 2.85 Digital supply (Max) (V) 3.15 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TQFP (PAG) 64 144 mm² 12 x 12 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • AC Performance:
    103dB of Dynamic Range at 4MSPS
    111dB of Dynamic Range at 125kSPS
    –107dB THD
  • DC Accuracy:
    3ppm INL
    4µV/°C Offset Drift
    4ppm/°C Gain Drift
  • Programmable Digital Filter with User-Selectable Path:
    • Low-Latency: Completely settles in 2.65µs
    • Wide-Bandwidth: 1.7MHz BW with flat passband
  • Flexible Read-Only Serial Interface:
    • Standard CMOS
    • Serialized LVDS
  • Easy Conversion Control with START Pin
  • Out-of-Range Detection
  • Supply: Analog +5V, Digital +3V
  • Power: 575mW
  • APPLICATIONS
    • Automated Test Equipment
    • Medical Imaging
    • Scientific Instrumentation
    • Test and Measurement

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Description

The ADS1675 is a high-speed, high-precision analog-to-digital converter (ADC). Using an advanced delta-sigma () architecture, it operates at speeds up to 4MSPS with outstanding ac performance and dc accuracy.

The ADS1675 ADC is comprised of a low-drift modulator with out-of-range detection and a dual-path programmable digital filter. The dual filter path allows the user to select between two post-processing filters: Low-Latency or Wide-Bandwidth. The Low-Latency filter settles quickly (as fast as 2.65µs) for applications with large instantaneous changes, such as a multiplexer. The Wide-Bandwidth path provides an optimized frequency response for ac measurements with a passband ripple of less than ±0.00002dB, stop band attenuation of 86dB, and a bandwidth of 1.7MHz.

The device offers two speed modes with distinct interface, resolution, and feature set. In the high-speed mode the device can be set to operate at either 4MSPS or 2MSPS. In the low-speed mode, it can be set to operate at either 1MSPS, 500KSPS, 250KSPS or 125KSPS.

The ADS1675 is controlled through I/O pins—there are no registers to program. A dedicated START pin allows for direct control of conversions: toggle the START pin to begin a conversion, and then retrieve the output data. The flexible serial interface supports data readback with either standard CMOS and LVDS logic levels, allowing the ADS1675 to directly connect to a wide range of microcontrollers, digital signal processors (DSPs), or field-programmable grid arrays (FPGAs).

The ADS1675 operates from an analog supply of 5V and digital supply of 3V, and dissipates 575mW of power. When not in use, the PDWN pin can be used to power down all device circuitry. The device is fully specified over the industrial temperature range and is offered in a TQFP-64 package.

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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 4MSPS, 24-Bit Analog-to-Digital Converter datasheet (Rev. D) Aug. 11, 2010
E-book Fundamentals of Precision ADC Noise Analysis Jun. 19, 2020
Application note Digital Filter Types in Delta-Sigma ADCs Jun. 27, 2017
White paper Voltage-reference impact on total harmonic distortion Aug. 01, 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs Mar. 19, 2015
User guide ADS1675REF User's Guide (Rev. A) Sep. 13, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
Description

ADCPro™ is a modular software system for evaluating analog-to-digital converters (ADCs) without the need for expensive logic analyzers and complex analysis routines. Used alone it is suitable for performing analysis on data sets captured from ADC testing; when paired with a Texas Instruments (...)

Features

ADCPro software from Texas Instruments will simplify the tasks of collecting and analyzing ADC data, and ease evaluation. With it, you can easily set up an evaluation system that may not exactly replicate the manufacturer's system, but still arrive at meaningful results that can be compared to (...)

EVALUATION BOARD Download
document-generic User guide
Description

The ADS1675 is a high-speed, high-precision analog-to-digital converter (ADC). Using an advanced delta-sigma architecture, it operates up to 4MSPS with outstanding ac performance and dc accuracy. The ADS1675 Reference Design is a complete PC based solution for the evaluation of the ADS1675 using the (...)

Features
  • Full-featured evaluation board for the ADS1675 24-bit Analog to Digital Converter
  • Easy-to-use evaluation software for Microsoft™ Windows XP and Windows 7
  • Built in analysis tools including scope, FFT and Histogram displays
  • Onboard or off board oscillator options

Design tools & simulation

SIMULATION MODEL Download
SBAM152.ZIP (50 KB) - IBIS 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
CALCULATION TOOL 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 TOOL 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
  • (...)

CAD/CAE symbols

Package Pins Download
TQFP (PAG) 64 View options

Ordering & quality

Information included:
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  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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