ADS1259-Q1

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Automotive, 24-bit, 14.4kSPS, 1-ch delta-sigma ADC w/ low-drift Vref for high-dynamic range systems

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Product details

Parameters

Resolution (Bits) 24 Number of input channels 1 Sample rate (Max) (kSPS) 14.4 Interface SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Rating Automotive Reference mode Ext, Int Input range (Max) (V) 2.75, 5.35 Input range (Min) (V) -2.7, 0 Features 50/60 Hz Rejection, Oscillator Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 13 Analog voltage AVDD (Min) (V) 4.75 Analog voltage AVDD (Max) (V) 5.25 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25 Approx. price (US$) 5.82 | 1ku open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to 125°C
    • HBM ESD Classification 2
    • CDM ESD Classification C4B
  • Programmable Data Rates: 10 SPS to 14.4 kSPS
  • Single-Cycle Settling Digital Filter
  • High Performance:
    • 21.3 ENOB at 1.2 kSPS
    • INL: 3 ppm
    • Offset Drift: 0.05 µV/°C
    • Gain Drift: 0.5 ppm/°C
  • Internal Reference: 2.5 V, 10 ppm/°C Drift
  • Internal 2% Accurate Oscillator
  • Input Signal Out-of-Range Detection
  • Optional Checksum and Redundant Data-Read Capability
    to Augment Data Integrity
  • SPI-Compatible Interface, Mode 1
  • Analog Supply: 5 V or ±2.5 V
  • Digital Supply: 2.7 V to 5 V
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Description

The ADS1259-Q1 is a precision, low-drift, 24-bit, analog-to-digital converter (ADC). The device can perform conversions at data rates up to 14.4 kSPS with high resolution and is therefore ideally suited to measure rapidly changing signals that have a wide dynamic range. An integrated low-noise, low-drift 2.5-V reference eliminates the need for an external voltage reference, thus reducing system cost and component count.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise performance and linearity. The device can use the integrated oscillator, an external crystal, or an external clock as the ADC clock source.

A fast-responding input overrange detector flags the conversion data if an input overrange event occurs. To augment data integrity in noisy automotive environments the ADS1259-Q1 offers an optional checksum byte and a redundant conversion data-read capability.

The ADS1259-Q1 consumes 13 mW during operation and less than 25 µW when powered down. TI offers the ADS1259-Q1 device in a TSSOP-20 package with full specification from –40°C to 125°C.

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Technical documentation

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No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet Automotive, 14.4-kSPS, 24-Bit ADC with Integrated Low-Drift Reference datasheet Mar. 19, 2014
Application notes Communication Methods for Data Integrity Using Delta-Sigma Data Converters Jun. 01, 2020
Application notes Digital Filter Types in Delta-Sigma ADCs Jun. 27, 2017
More literature Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs Mar. 19, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
Description

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 (...)

Design tools & simulation

SIMULATION MODELS Download
SBAM018.ZIP (112 KB) - IBIS Model
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 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Automotive, mA-to-kA Range, Current Shunt Sensor Reference Design
TIDA-03050 — This reference design shows how to detect current from the mA-to-KA range using a busbar-type shunt resistor. The increasing demand of high-capacity batteries in electric vehicles (EVs) and hybrid electric vehicles (HEVs) drives the requirement for larger current spans and highly-accurate current (...)
document-generic Schematic document-generic User guide

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Package Pins Download
TSSOP (PW) 20 View options

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