General Description

The MAX1067/MAX1068 low-power, multichannel, 14-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, integrated +4.096V reference, a reference buffer, an internal oscillator, automatic power-down, and a high-speed SPI™/QSPI™/MICROWIRE™-compatible interface. The MAX1067/MAX1068 operate with a single +5V analog supply and feature a separate digital supply, allowing direct interfacing with +2.7V to +5.5V digital logic.

Features

♦ 14-Bit Resolution, ±0.5 LSB INL and ±1 LSB DNL (max)

♦ +5V Single-Supply Operation

♦ Adjustable Logic Level (+2.7V to +5.25V)

♦ Input Voltage Range: 0 to VREF

♦ Internal (+4.096V) or External (+3.8V to AVDD) Reference

♦ Internal Track/Hold, 4MHz Input Bandwidth

♦ Internal or External Clock

♦ SPI/QSPI/MICROWIRE-Compatible Serial

   Interface, MAX1068 Performs DSP-Initiated

   Conversions

♦ 8-Bit-Wide or 16-Bit-Wide Data-Transfer Mode (MAX1068 Only)

♦ 4-Channel (MAX1067) or 8-Channel (MAX1068) Input Mux

   Scan Mode Sequentially Converts Multiple

   Channels or One Channel Continuously

♦ Low Power

   3.6mA at 200ksps

   1.85mA at 100ksps

   185µA at 10ksps

   0.6µA in Full Power-Down Mode

♦ Small Package Size

   16-Pin QSOP (MAX1067)

   24-Pin QSOP (MAX1068)

Applications

   Motor Control

   Industrial Process Control

   Industrial I/O Modules

   Data-Acquisition Systems

   Thermocouple Measurements

   Accelerometer Measurements