Date: 01/08/2011

16-bit delta-sigma ADC packs PGA, reference, temp sensor and multiplexer

Texas Instruments (TI) has introduced ADS1118, a 16-bit delta-sigma analog-to-digital converter (ADC) with integrated programmable gain amplifier (PGA), reference, temperature sensor and 4-input multiplexer. TI claims the ADS1118 is more than 65-percent smaller than any other 16-bit ADC and also the lowest-power ADC with a built-in internal reference supporting data rates up to 860 samples per second.

Key features and benefits of the ADS1118:
Small size saves board space: Small QFN package option enables close proximity to sensors, lowering component count by simplifying cold junction compensation for thermocouples.
Low power extends battery life: Supports 2.0-V to 5.5-V power supplies while consuming only 150 uA (typical) to extend the battery life of portable, battery-powered industrial devices for temperature measurement, gas monitoring, industrial process control, instrumentation and more.
Provides a complete data acquisition solution when paired with an MSP430 microcontroller.

As per TI, the ADS1118 provides direct, linearized measurements with uncalibrated error guaranteed below 0.5 degrees Celsius from 0 degrees C to 65 degrees C, a 75-percent improvement over the competition.
TI offers a variety of tools and support to speed development with the ADS1118, including an IBIS model, anti-aliasing filter tool for data converters and op amp to ADC circuit topography calculator.

Available: Now in samples, production quantities in December
Package: 2-mm x 1.5-mm QFN package
Price: $2.22 each for 1K units

For more information visit: www.ti.com