General Description

The MAX1090/MAX1092 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. The devices operate with a single +5V analog supply and feature a VLOGIC pin that allows them to interface directly with a +2.7V to +5.5V digital supply.

Power consumption is only 10mW (VDD = VLOGIC) at a 400ksps max sampling rate. Two software-selectable power-down modes enable the MAX1090/MAX1092 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.

Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1090 has eight input channels and the MAX1092 has four input channels (four and two input channels, respectively, when in pseudo-differential mode).

Features

♦ 10-Bit Resolution, ±0.5 LSB Linearity

♦ +5V Single-Supply Operation

♦ User-Adjustable Logic Level (+2.7V to +5.5V)

♦ Internal +2.5V Reference

♦ Software-Configurable Analog Input Multiplexer

   8-Channel Single-Ended/

   4-Channel Pseudo-Differential (MAX1090)

   4-Channel Single-Ended/

   2-Channel Pseudo-Differential (MAX1092)

♦ Software-Configurable Unipolar/Bipolar Analog Inputs

♦ Low Current:

   2.5mA (400ksps)

   1.0mA (100ksps)

   400µA (10ksps)

   2µA (Shutdown)

♦ Internal 6MHz Full-Power Bandwidth Track/Hold

♦ Byte-Wide Parallel (8 + 2) Interface

♦ Small Footprint:

   28-Pin QSOP (MAX1090)

   24-Pin QSOP (MAX1092)

Applications

   Industrial Control Systems

   Data Logging

   Energy Management

   Patient Monitoring

   Data-Acquisition Systems

   Touchscreens