MAX191 Overview
Description
____________________________Features o o o o o 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 o 100ksps Tested Sampling Rate o Serial and 8-Bit Parallel µP Interface o 24-Pin Narrow DIP and Wide SO Packages MAX191 The MAX191 is a monolithic, CMOS, 12-bit analog-todigital 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.
Key Features
- 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 VDD supply current to 50µA max, including the internal-reference current
- Decoupling capacitors are the only external components needed for the power supply and reference
