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16bit ADC supports data rates up to 860S/s

Posted: 04 Aug 2011 ?? ?Print Version ?Bookmark and Share

Keywords:ADC? PGA? sensor?

Texas Instruments Inc. (TI) has launched what it claims to be the industry's smallest, 16bit delta-sigma analog-to-digital converter (ADC). The ADS1118 measures 2 x 1.5mm and is more than 65 percent smaller than other 16bit ADCs, said TI. It offers direct, linearized measurements with uncalibrated error guaranteed below 0.5C from 0C to 65C, a 75 percent advantage against the competition, the company stated. It is also the lowest-power 16bit ADC with a built-in internal reference supporting data rates up to 860S/s.

The ADC integrates a programmable gain amplifier (PGA), temperature sensor, low-drift reference and four-input multiplexer for data acquisition of multiple signals from a wide variety of sensors. Its small QFN package option enables close proximity to sensorslowering component count by simplifying cold junction compensation for thermocouples. It also supports 2C5.5V power supplies while consuming only 150?A (typ.) to extend the battery life of portable, battery-powered industrial devices for temperature measurement, gas monitoring, industrial process control, instrumentation and more. The ADS1118 provides a total data acquisition solution when paired with MSP430 MCU.

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. Engineers can also ask questions and help solve problems in the Precision Data Converter Forum in the TI E2E Community. An evaluation module (ADS1118EVM), including software and source code, is available today for a suggested retail price of $49.

The ADS1118 is available in a 5 x 3mm MSOP package. Samples of the QFN package are also available with production quantities expected in December. Both package options are priced at $2.22 in 1,000-unit quantities.

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