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16-Bit, Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor

Product Details

Key Features

Simplified Block Diagram

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Key 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 DAC
  • Uncommitted Op Amps
  • Dual SPDT Analog Switches
  • 1.25V, 2.048V, or 2.5V Selectable Voltage Reference
  • 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 0.8mm) 40-Pin TQFN Package

Applications/Uses

  • Battery-Powered and Portable Devices
  • Data-Acquisition Systems
  • Electrochemical and Optical Sensors
  • Industrial Control
  • Medical Instruments

Description

The MAX1359B 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 (µP)-based system. This device integrates an ADC, DAC, two operational amplifiers, internal 1.25V/2.048V/2.5V selectable 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.

The MAX1359B 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 MAX1359B operates from a single +1.8V to +3.6V supply and consumes only 1.4mA in normal mode and only 6.1µA in sleep mode.

The serial interface is compatible with either SPI™/QSPI™ or MICROWIRE™, and is used to power up, configure, and check the status of all functional blocks.

The MAX1359B is available in a space-saving 40-pin TQFN package and is specified over the commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.

Simplified Block Diagram

MAX1359B: Functional Diagram MAX1359B: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .