ICL7112

The ICL7112 is a monolithic 12-bit resolution, fast successive approximation A/D converter. It uses thin film resistors and CMOS circuitry combined with an on-chip PROM calibration table to achieve 12-bit linearity without laser trimming. Special design techniques used in the DAC and comparator result in high speed operation, while the fully static silicon-gate CMOS circuitry keeps the power dissipation very low.
Microprocessor bus interfacing is eased by the use of standard memory WRite and ReaD cycle timing and control signals, combined with Chip Select and Address pins. The digital output pins are byte-organized and three-state gated for bus interface to 8-bit and 16-bit systems.
The ICL7112 provides separate Analog and Digital grounds for increased system accuracy. Operating with ±5V supplies, the lCL7112 accepts 0V to +10V input with a -10V reference or 0V to -10V input with a +10V reference.