General 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 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 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
⦠10-Bit Force-Sense DACs
⦠Uncommitted Op Amps
⦠Dual SPDT and SPST Analog Switches
⦠Selectable References
1.25V, 2.048V, and 2.5V
⦠Internal Charge Pump
⦠System Support
RTC 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 0.8mm), 40-Pin TQFN Package
Applications
Battery-Powered and Portable Devices
Electrochemical and Optical Sensors
Medical Instruments
Industrial Control
Data-Acquisition Systems
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