MP3275

www.DataSheet4U.com MP3275 Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem FEATURES Fault Protected 16-Channel 12-Bit A/D Converter with Sample & Hold, Reference, Clock and 3-State Outputs Fast Conversion, less than 15µS 2’s Complement and Serial Data Output Remote Analog Ground Sensing Overvoltage Protected Input (50 V over the Supply Voltages) Precision Reference for Long Term Stability and Low Gain T.C. Guaranteed Linearity Over Temperature Guaranteed Performance at +12/–5 V, ±12 & ±15 V Low Power (7 mW per Channel Typical) Parallel Version: MP3276 32 Channel Version: MP3274 GENERAL DESCRIPTION The MP3275 is a complete 16-channel, 12-bit Data Acquisition Subsystem with serial data port. Implemented using an advanced BiCMOS process, the converter combines a 16-channel passive overvoltage-protected multiplexer instrumentation amp, a sample & hold, a SAR, a 12-bit decoded D/A, a comparator, a precision reference and the control logic to achieve an accurate conversion in less than 15µs, and a mux/instrumentation amp settling period of less than 10µs. A unique input design provides input overvoltage protection to 50 V over the supply voltages. The circuit design can allow for an overvoltage condition on unselected channels without disrupting the measured channel or operation of the MP3275! The internal 4 V reference has sufficient output current to provide other system reference needs. Precision thin film scaling and offset resistors are...