ADS8509-HT

www.ti.com

SLAS737A – DECEMBER 2012 – REVISED DECEMBER 2013

16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER

Check for Samples: ADS8509-HT

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FEATURES

•

250-kHz Sampling Rate

SUPPORTS EXTREME TEMPERATURE

APPLICATIONS

•

4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input

Ranges

•

Controlled Baseline

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±4.5 LSB Max INL (at 175°C)

•

One Assembly and Test Site

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±2.2 LSB Max DNL (at 175°C), 16-Bit No

•

One Fabrication Site

Missing Codes

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Available in Extreme (–40°C to 175°C)

•

SPI Compatible Serial Output with Daisy-Chain

(TAG) Feature

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This Device is Qualified for 1000 Hours of

•

Single 5-V Supply

Continuous Operation at Maximum Rated

Temperature

•

Pin-Compatible with ADS7809 (Low Speed)

and 12-Bit ADS8508/7808

•

Extended Product Life Cycle

•

Uses Internal or External Reference

•

Extended Product-Change Notification

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87-mW Typ Power Dissipation at 250 KSPS to

•

Product Traceability

5 V, While the Innovative Design Allows

•

Texas Instruments high temperature products

Operation

utilize highly optimized silicon (die) solutions

•

28-Pin SSOP Package

with design and process enhancements to

maximize performance over extended

•

Simple DSP Interface

temperatures.

APPLICATIONS

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Down-hole Drilling

•

High Temperature Environments

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Custom temperature ranges available

DESCRIPTION

The ADS8509 is a complete 16-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS

structures. It contains a complete 16-bit, capacitor-based, successive approximation register (SAR) A/D converter

with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or

can be synchronized to an external data clock. The ADS8509 also provides an output synchronization pulse for

ease of use with standard DSP processors.

The ADS8509 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide

various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single 5-

V supply with power dissipation under 110 mW.

The ADS8509 is available in a 28-pin SSOP package and is fully specified for operation from -40°C to 175°C.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.