General Description

The MAX1280/MAX1281 12-bit ADCs combine an 8-channel analog-input multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1280 operates from a single +4.5V to +5.5V supply; the MAX1281 operates from a single +2.7V to +3.6V supply. Both devices’ analog inputs are software configurable for unipolar/bipolar and single ended/pseudo-differential operation.

Features

♦ 8-Channel Single-Ended or 4-Channel Pseudo-Differential Inputs

♦ Internal Multiplexer and Track/Hold

♦ Single-Supply Operation

+4.5V to +5.5V (MAX1280)

+2.7V to +3.6V (MAX1281)

♦ Internal +2.5V Reference

♦ 400ksps Sampling Rate (MAX1280)

♦ Low Power 2.5mA (400ksps)

1.3mA (Reduced-Power Mode)

0.9mA (Fast Power-Down Mode)

2µA (Full Power-Down)

♦ SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface

♦ Software-Configurable Unipolar or Bipolar Inputs

♦ 20-Pin TSSOP Package