MAX11359A Datasheet | Maxim Integrated

19-4594; Rev 0; 5/09 .. 16-Bit Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor General Description The MAX11359A smart data-acquisition system (DAS) is based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor (µP)-based system. The device integrates an ADC, DAC, operational amplifiers, internal selectable reference, temperature sensors, analog switches, a 32k Hz 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. The MAX11359A has dual 10:1 differential input multiplexers (muxes) that accept signal levels from 0 to AVDD. An on-chip 1x to 8x programmable-gain amplifier (PGA) measures low-level signals and reduces external circuitry required. The MAX11359A operates from a single +1.8V to +3.6V supply and consumes only 1.4m A in normal mode and only 6.1µA in sleep mode. The MAX11359A has one DAC with two unmitted op amps. The serial interface is patible with either SPI™/QSPI™ or MICROWIRE™, and is used to power up, configure, and check the status of all functional blocks. The MAX11359A is available in a space-saving 40-pin TQFN package and is specified over the mercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges. Features o +1.8V to +3.6V Single-Supply Operation o 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 o 10-Bit Force-Sense DAC o Unmitted Op Amps o Dual SPDT Analog Switches o Selectable References 1.251V, 1.996V, and 2.422V o Internal Charge Pump o System Support Real-Time Clock and Alarm Register Internal/External Temperature Sensor Internal Oscillator with Clock Output User-Programmable I/O and...