Exar Corporation MP3276
The MP3276 is a complete 16-channel, 12-bit Data Acquisition Subsystem with 3-state output buffers for direct interfacing to 16-bit microprocessor buses. The circuit design can allow for an overvoltage condition on unselected channels without disrupting the measured channel or operation of the MP3276! The internal 4 V reference has sufficient output current to provide other system reference needs.| Part No. | MP3276 |
|---|---|
| Datasheet | MP3276 Download |
| Manufacturer |  Exar Corporation |
| Description | 12-Bit Data Acquisition Subsystem |
| Buy | Stock & Price |
FEATURES
● Fault Protected 16-Channel 12-Bit A/D Converter with Sample & Hold, Reference, Clock and 3-state Outputs● Fast Conversion, less than 15µS
● Microprocessor Bus Interface
● 2’s Complement Data Output
● Parallel or Serial Data Output Modes
● 65 ns Bus Access Time
● 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: 110 mW typ. (7 mW per Channel typ.)
● 32 Channel Version: MP3274
GENERAL DESCRIPTION
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 repeated 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.
