24-bit temperature measurement ADCs with best-in-class power consumption and integration from TI
Texas Instruments has announced a family of 24-bit, low-noise temperature measurement analog-to-digital converters (ADCs) featuring what is says is 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.
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
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