Texas Instruments introduces complete 24-bit temperature measurement ADCs with best-in-class power consumption

Texas Instruments introduces complete 24-bit temperature measurement ADCs with best-in-class power consumption and integration

DALLAS (April 30, 2009) – Texas Instruments Incorporated (TI) (NYSE: TXN) today announced a family of 24-bit, low-noise temperature measurement analog-to-digital converters (ADCs) featuring industry leading power consumption and integration. The ADS1248 and ADS1247 integrate dual matched current digital-to-analog converters (DACs), low drift internal reference, oscillator, temperature sensor, burnout detection and eight general purpose I/Os. With a data rate of 2 kSPS and only 2.56 mW of power dissipation, the ADCs provide an easy-to-use, low-power front-end solution for temperature measurement (RTDs, thermocouples, thermistors), flow/pressure measurement and industrial process control. For more product information, see: www.ti.com/ads1248-pr.

Key Features

24-bit resolution, 2 kSPS data rate, 2.56 mW power dissipation

4 differential / 7 single-ended inputs (ADS1248); 2 differential / 3 single-ended inputs (ADS1247)

50/60 Hz simultaneous rejection mode

Low-noise programmable gain amplifier (40 nV at G=128)

Key Benefits

Complete precision temperature measurement ADC solution reduces device count and simplifies design without compromising performance

Flexible front end for wide range of industrial sensors that require high resolution and low noise

Excellent measurement repeatability over the -40 to +125C operating temperature range

Compatible devices complete the signal chain, including OPA277 and OPA333 precision operational amplifiers and REF5025 precision voltage reference

Availability and pricing

The ADS1248 and ADS1247 are available now in a TSSOP-20 package. The ADS1248 is priced at $4.95 and the ADS1247 is priced at $4.45. All pricing is in quantities of 1,000 units. For applications requiring a smaller package and lower cost, the single-channel ADS1246 provides a reduced feature set in a TSSOP-16 package for only $3.45.

Find out more about TI’s delta-sigma data converters at the links below:

Samples and evaluation modules: www.ti.com/ads1248-pr

TI’s data converter portfolio and selection guide: www.ti.com/dataconverters-pr

http://focus.ti.com/pr/docs/preldetail.tsp?sectionId=594&prelId=sc09057