16-bit converter targets precision apps

Dallas — This 16-bit, 10 Msamples/second delta-sigma analog-to-digital converter from Texas Instruments Inc. features 86 dB signal-to-noise ratio and 95 dB spurious-free dynamic range over a 5-MHz bandwidth.

The ADS1610 provides 4x the speed of the nearest delta-sigma competitor and 2x the speed of TI's previous delta-sigma solutions, said Gregg Lowe, senior vice president of TI's high-performance analog business. The ADS1610 is intended for demanding measurements in communications, scientific instrumentation and test and measurement applications. The 16-bit resolution with 86 dB SNR, 95 dB SFDR and -94 dB total harmonic distortion (THD) is suited for high-speed applications requiring higher accuracy signal measurement.

A 4.4-MHz passband with less than 0.0002 dB of ripple provides wideband signal processing, while an on-chip digital filter simplifies anti-alias requirements compared to successive-approximation register (SAR) and pipeline converters. The device operates from a +5 V analog supply and a +3 V digital supply.

The ADS1610 is pin compatible with TI's previously introduced ADS1605 (16-bit, 5 Msamples/s A/D converter) and ADS1625 (18-bit, 1.25 Msamples/s A/D converter).

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The ADS1610 is sampling now, with volume production scheduled for the third quarter. The device comes in a TQFP-64 package and is priced at $29.95 in 1,000-piece quantities (suggested resale pricing). Click here for the ADS1610 data sheet.

Texas Instruments , 1-800-477-8924,

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