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General Description

The MAX11359A smart data-acquisition systems (DAS) is based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor (?P)-based system. The device integrates an ADC, DAC, operational amplifiers, internal selectablevoltage reference, temperature sensors, analog switches, a 32kHz oscillator, a real-time clock (RTC) with alarm, a high-frequency-locked loop (FLL) clock, four user-programmable I/Os, an interrupt generator, and 1.8V and 2.7V voltage monitors in a single chip.

Features

? +1.8V to +3.6V Single-Supply Operation

? Multichannel 16-Bit Sigma-Delta ADC

??? 10sps to 512sps Programmable Conversion Rate

??? Self and System Offset and Gain Calibration

??? PGA with Gains of 1, 2, 4, or 8

??? Unipolar and Bipolar Modes

??? 10-Input Differential Multiplexer

? 10-Bit Force-Sense DACs

? Uncommitted Op Amps

? Dual SPDT Analog Switches

? Selectable References

??? 1.25V, 1.996V and 2.422V

? Internal Charge Pump

? System Support

??? Real-Time Clock and Alarm Register

??? Internal/External Temperature Sensor

??? Internal Oscillator with Clock Output

??? User-Programmable I/O and Interrupt Generator

??? VDD Monitors

? SPI/QSPI/MICROWIRE, 4-Wire Serial Interface

? Space-Saving (6mm x 6mm x 0.75mm), 40-Pin TQFN Package

Applications

??? Battery-Powered and Portable Devices

??? Electrochemical and Optical Sensors

??? Medical Instruments

??? Industrial Control

??? Data-Acquisition Systems