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TI Introduces Industry's Fastest 16-Bit SAR ADC at 4MSPS

Data Converter Offers 33 Percent Faster Speed without Compromising Precision

Jun 26, 2006

DALLAS (June 26, 2006) - Texas Instruments Incorporated (TI) (NYSE: TXN) today announced the industry's fastest 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) which is 33 percent faster than the nearest competitive device. The ADS8422 achieves 4MSPS without sacrificing AC or DC performance, making it ideal for a wide range of demanding applications such as medical imaging, test and measurement, industrial automation and scientific instrumentation. (See www.ti.com/sc06119.)

"The ADS8422 combines best-in-class speed with superior precision specifications, enabling customers to push the boundaries in their advanced applications," said Art George, senior vice president of TI's high-performance analog business. "Texas Instruments continues to develop breakthrough data converter solutions with leading-edge resolution, speed and performance."
The ADS8422 features excellent AC and DC specifications, such as 92dB signal-to-noise ratio (SNR), -102dB total harmonic distortion (THD), 2LSB integral nonlinearity (INL), +1.5/-1LSB differential nonlinearity (DNL), +/-0.5mV offset voltage over temperature, less than 0.2ppm/C offset drift, +/-0.1% gain error and 2ppm/C gain drift.
The device has a fully differential input with pseudo bipolar input range (-4V to +4V) and includes either a full 16-bit interface or two 8-bit option modes so data can be read in cycles, if necessary. Other features includes an internal 4.096V reference and reference buffer, single-supply operation and guaranteed operation over the industrial temperature range of -40C to +85C.
TI provides customers with an advanced signal chain solution for high-speed, high-precision applications including an extensive portfolio of wideband amplifiers to drive the analog inputs of the ADS8422, such as the THS4031, THS4131 and OPA2613. The ADS8422 includes a separate I/O supply to simplify the digital interface, making it well suited to work with TI's high-performance TMS320TM DSP platform. 
The ADS8422 successfully complements several recently released best-in-class ADCs, such as the industry's fastest 16-bit delta-sigma ADC (ADS1610, 10MSPS) and the industry's fastest 14-bit pipeline converter (ADS5546, 190MSPS).

Availability and Packaging

The ADS8422 is sampling now, with volume production scheduled for 3Q 2006. The device is available in a 48-pin TQFP package and is priced at $31.95 in 1,000-piece quantities (suggested resale pricing). Evaluation modules (EVMs) are also available.


TI offers analog engineers a wide-ranging support infrastructure that includes training and seminars, design tools and utilities, technical documentation, evaluation modules, an online KnowledgeBase, a product information hotline and a comprehensive offering of samples that ship within 24 hours of request. For more information on TI's complete analog design support, and to download the latest Amplifier & Data Converter Selection Guide, visit 

www.ti.com/analog