ADS1252U

The ADS1252U belongs to ADS1252, which is a precision, wide dynamic range,delta-sigma, Analog-to-Digital (A/D) converter with24-bit resolution operating from a single +5V supply.The delta-sigma architecture is used for wide dynamicrange and to guarantee 24 bits of no missing codeperformance. An effective resolution of 19 bits (2.5ppmof rms noise) is achieved for conversion rates up to40kHz.The ADS1252 is designed for high-resolution mea-surement applications in cardiac diagnostics, smarttransmitters, industrial process control, weigh scales,chromatography, and portable instrumentation. Theconverter includes a flexible, two-wire synchronousserial interface for low-cost isolation.The ADS1252 is a single-channel converter and isoffered in an SO-8 package.

The features of ADS1252 can be summarized as (1)24 bits no missing codes; (2)19 bits effective resolution up to 40kHz data rate; (3)low noise: 2.5ppm; (4)differential inputs; (5)inl: 0.0015% (max); (6)external reference; (7)power-down mode; (8)sync mode. It can be applicated in cardiac diagnostics; direct thermocouple interface; blood analysis; infrared pyrometer; liquid/gas chromatography; precision process control.

The absolute maximum ratings of ADS1252 are (1)analog input: current: ±100mA, momentary; ±10mA, continuous; voltage: GND 0.3V to VDD + 0.3V; (2)VDD to GND: 0.3V to 6V; (3)VREF voltage to GND: 0.3V to VDD + 0.3V; (4)digital input voltage to GND: 0.3V to VDD + 0.3V; (5)digital output voltage to GND: 0.3V to VDD + 0.3V; (6)lead temperature (soldering, 10s): +300°C; (7)power dissipation (any package): 500mW. This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. Electrostatic discharge can cause damage ranging from performance degradation to complete device failure. Burr-Brown Corporation recommends that all integrated circuits be handled and stored using appropriate ESD protection methods.