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