General Description

The MAX1091/MAX1093 low-power, 10-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed, byte-wide parallel interface. They operate with a single +3V analog supply and feature a VLOGIC pin that allows them to interface directly with a +1.8V to +3.6V digital supply.

Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1091/MAX1093 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates.

Features

♦ 10-Bit Resolution, ±0.5 LSB Linearity

♦ +3V Single-Supply Operation

♦ User-Adjustable Logic Level (+1.8V to +3.6V)

♦ Internal +2.5V Reference

♦ Software-Configurable, Analog Input Multiplexer

   8-Channel Single-Ended/

   4-Channel Pseudo-Differential (MAX1091)

   4-Channel Single-Ended/

   2-Channel Pseudo-Differential (MAX1093)

♦ Software-Configurable, Unipolar/Bipolar Inputs

♦ Low Power

   1.9mA (250ksps)

   1.0mA (100ksps)

   400µA (10ksps)

   2µA (Shutdown)

♦ Internal 3MHz Full-Power Bandwidth Track/Hold

♦ Byte-Wide Parallel (8 + 2) Interface

♦ Small Footprint:

   28-Pin QSOP (MAX1091)

   24-Pin QSOP (MAX1093)

Applications

   Industrial Control Systems

   Data Logging

   Energy Management

   Patient Monitoring

   Data-Acquisition Systems

   Touch Screens