AD7575

The AD7575 is a high speed 8-bit ADC with a built-in track/hold function. The successive approximationconversion tech-nique is used to achieve a fast conversion time of 5 µs, while thebuilt-in track/hold allows full-scale signals up to 50 kHz (386 mV/µsslew rate) to be digitized. The AD7575 requires only a single +5 Vsupply and a low cost, 1.23 V bandgap reference in order to convertan input signal range of 0 to 2 V_REF.

The AD7575 is designed for easy interfacing to all popular 8-bitmicroprocessors using standard microprocessor control signals(CS and RD) to control starting of the conversion and reading ofthe data. The interface logic allows the AD7575 to be easilyconfigured as a memory mapped device, and the part can beinterfaced as SLOWMEMORY or ROM. All data outputs ofthe AD7575 are latched and three-state buffered to allowdirectconnection to a microprocessor data bus or I/O port.

The AD7575 is fabricated in an advanced, all ion-implanted highspeed Linear Compatible CMOS (LC²MOS)processand isavailable in a small, 0.3" wide, 18-lead DIP, 18-lead SOIC or inother 20-terminal surface mount packages.