DESCRIPTION
TheSP8542(2 channel) andSP8544(4 channel) are 12-Bit serial in/out data acquisition systems with a bi-directional serial interface. The devices contain a high speed 12-Bit analog to digital converter, internal reference, and a 2 or 4 channel input mux which drives the internal sample/hold circuitry. The SP8542 is available in 16-pin PDIP and SOIC packages, and the SP8544 is available in 18-pin PDIP and SOIC packages, specified over Commercial and Industrial temperature ranges.

■ Two or Four Channel Input Mux
■ 12 Bit Resolution
■ Single +5Volt Supply
■ Internal 1.25 Volt Reference
■ Unipolar 0 to +2.5 Volt Input Range
■ Fast, 3.75 µs Conversion Time per Channel
■ Fast Power Shutdown/Turn-On Mode
■ 3-Wire Synchronous Serial High Speed Interface
■ 2µA Shutdown Mode (10µW)
■ Low Power CMOS 42mW typical