GENERAL DESCRIPTION

SNAD01B is a low cost serial 8-bits ADC with 8 individual input channels. Each channel can be independently programmed to a digital or analog input mode. In the analog input mode, this single-ended channel accepts an analog input signal from 0 to VREF and converts the signal into 12-bit digital codes (with 8-bit accuracy guaranteed). In the digital input mode, the channel can be treated as digital input port and the logic level appears at the channel can be acquired. SNAD01B has a synchronous 3-wires serial interface. Through this interface, the host CPU can easily control SNAD01B.

FEATURES

♦ Single Supply: 2.7V ~ 5.25V

♦ Eight Analog/Digital Input Channels.

♦ Internal 1.17v Bandgap Reference for Battery Monitoring. (Channel 7)

♦ Low Power Consumption: typical operating current: 500uA @ 3V, Standby current <1uA.

♦ Up to 25kHz Conversion Rate.

♦ 8-bits Resolution with (8-bits) No Missing Code.

♦ 3-Wire Serial Interface.

APPLICATIONS

♦ Battery-Powered Systems

♦ Instrumentation

♦ Portable Data Logging

♦ Test Equipment

♦ Data Acquisition

♦ Process-Control Monitoring