General Description

The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and sample to 133ksps. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation

Features

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

♦ Single-Supply Operation: +2.7V to +5.25V

♦ Internal 2.5V Reference (MAX149)

♦ Low Power: 1.2mA (133ksps, 3V Supply) 54µA (1ksps, 3V Supply) 1µA (Power-Down Mode)

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

♦ Software-Configurable Unipolar or Bipolar Inputs

♦ 20-Pin DIP/SSOP Packages

Applications

Portable Data Logging

Data Acquisition

Medical Instruments

Battery-Powered Instruments

Pen Digitizers

Process Control