MAX191 BENG DIP-24 12-bit analog-to- digital converter (ADC) featuring differential inputs, track/hold (T/H), internal voltage reference, internal or external clock, and parallel or serial μP interface. The MAX191 has a 7.5μs conversion time, a 2μs acquisition time, and a guaranteed 100ksps sample rate. The MAX191 operates from a single +5V supply or from dual ±5V supplies, allowing ground-referenced bipolar input signals. The device features a logic power-down input, which reduces the 3mA V DD supply current to 50μA max, including the internal-reference current. - 12-Bit Resolution, 1/2LSB Linearity - +5V or ±5V Operation - Built-In Track/Hold - Internal Reference with Adjustment Capability - Low Power: 3mA Operating Mode - 20μA Power-Down Mode - 100ksps Tested Sampling Rate - Serial and 8-Bit Parallel μP Interface