MAX1358B Datasheet | Maxim Integrated

Description The MAX1358B 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. This device integrates an ADC, DACs, operational amplifiers, internal selectable-voltage 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 MAX1358B 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) allows measuring low-level signals and reduces external circuitry required. The MAX1358B operates from a single +1.8V to +3.6V supply and consumes only 1.15m A in normal mode and only 3µA in sleep mode. The MAX1358B has two DACs with one unmitted op amp. 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 MAX1358B 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 477sps 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 DACs o Unmitted Op Amps o Dual SPDT and SPST Analog Switches o Selectable References 1.25V, 2.048V, and 2.5V o Internal Charge Pump o System Support RTC and Alarm Register Internal/External Temperature Sensor Internal Oscillator with Clock Output User-Programmable I/O and Interrupt Generator VDD Monitors o SPI/QSPI/MICROWIRE, 4-Wire Serial Interface o Space-Saving (6mm x 6mm x 0.8mm), 40-Pin TQFN...