Maxim MAX11359A intelligent data acquisition solution

Factory direct sales - SMD aluminum electrolytic capacitor - straight plug solid capacitors, the products are imported from Japan, aluminum foil,

Maxim's MAX11359A Intelligent Data Acquisition System (DAS) is based on a 16-bit sigma-delta analog-to-digital converter (ADC) with integrated ADC, DAC, op amp, selectable reference, temperature sensor, analog switch, 32kHz oscillator Real-time clock with alarm function, high frequency phase lock (FLL), four programmable I/O, interrupt generator, and 1.8V and 2.7V voltage monitors, mainly used in battery-powered and portable devices, electrochemical And optical sensors, medical devices, industrial control and data acquisition systems. This article describes the main features of the MAX11359A, block diagrams and various application circuits, including light reflectometer applications with dual LEDs and a single photodiode, with two remote sensors Temperature compensation circuit, programmable gain instrumentation amplifier, LCD contrast adjustment application circuit and single-ended and differential piezoelectric buzzer drive circuit.

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 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 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 1.4mA in normal mode and only 6.1μA in sleep mode. The MAX11359A has one DAC with two uncommitted op amps.

The serial interface is compatible with either SPITM/QSPITM or MICROWIRETM, 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 commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.

Key features of the MAX11359A:

+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

Selectable References

1.251V, 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 0.8mm) 40-Pin TQFN

Package

MAX11359A application:

Battery-Powered and Portable Devices

Electrochemical and Optical Sensors

Medical Instruments

Industrial Control

Data-Acquisition Systems

See the PDF document for details.