MAX14661

PRODUCTION

Beyond-the-Rails 16:2 Multiplexer

Multiplex ±5.5V Common-Mode Signal From a Single Supply Rail as Low as 1.6V

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Overview

  • Beyond-the-Rails Technology Reduces Cost and Complexity
    • Switch ± 5.5V Signals from a +1.6V Single Supply
    • Wide +1.6V to +5.5V Supply Range
    • Low 5.5Ω RON (typ) Across the Supply Range
  • Flexible Multiplexing Enables Design Reuse
    • 16:2 Matrix Switch Multiplexer Connects Any Input Pin To Either Common Pin In Any Combination
    • Each Switch is Independently Controlled via I2C or SPI
    • Programmable Shadow Registers Allow Simultaneous Updating
  • Low Distortion Switching Improves System Performance
    • Total Harmonic Distortion + Noise 0.005% (typ)
    • RON Flatness 2.5mΩ (typ) Across Complete Signal Range
  • Integrated Protection for System Reliability
    • ±10kV HBM ESD Protection on all AB_ and COM_Pins, Even When Powered Down

The MAX14661 is a serially controlled, dual-channel analog multiplexer allowing any of the 16 pins to be connected to either common pin simultaneously in any combination. The device features Beyond-the-Rails capability so that ±5.5V signals can be passed with any single supply between +1.6V and +5.5V.

The serial control is selectable between I2C and SPI. Both modes provide individual control of each independent switch so that any combination of switches can be applied. I2C mode provides two address-select pins allowing for addressing up to four devices on a single bus. The SPI mode includes a DOUT pin that can be used to chain multiple devices together with a single select signal.

The IC is available in a 28-pin (4mm x 4mm) TQFN package and is specified over the -40ºC to +85ºC extended temperature range. The AB_ and COM_ pins provide ±10kV ESD protection (HBM).

Applications

  • Audio Input Selection
  • Data Acquisition
  • I2C Signal Switching
  • System Diagnostics

MAX14661
Beyond-the-Rails 16:2 Multiplexer
MAX14661: Functional Diagram
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Software Resources

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Tools & Simulations


Evaluation Kits

eval board
MAX14661PMB1

Evaluation Kit for the MAX14661

Features and Benefits

  • 16:2 Matrix Switch Multiplexer
  • 50Ω Controlled-Impedance Signal Traces
  • Pmod™ Connector for Easy Interfacing
  • RoHS-Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested
  • EV Kit Contents Peripheral Module Containing MAX14661

Product Details

The MAX14661 PMB1 peripheral module provides a convenient way to evaluate the MAX14661 Beyond-the- Rails™ 16:2 multiplexer. All PCB signal traces are 50Ω controlled impedance to allow for easy impedancematching. The IC is capable of both I2C and SPI programming modes set by the SPI/I2C pin.

Refer to the MAX14661 IC data sheet for detailed information regarding the operation of the IC.

Applications

  • Audio Input Selection
  • Data Acquisition
  • I2C Signal Switching
  • System Diagnostics

MAX14661PMB1
Evaluation Kit for the MAX14661
MAX14661PMB1: Board Photo

Reference Designs

5878fig01
MAXREFDES72 Circuits from the lab

Pmod Adapter for Arduino Platform

Features and Benefits

Features

  • Arduino® UNO R3 compatible
  • IOREF support for 3.3V or 5V signal levels
  • 2x6 Digilent® Pmod compatible interface
  • Supports Pmod types 1, 2, 3, and 4, I2C and nonstandard pinouts
  • Level shifting between Pmod and Arduino pins
  • Precision RTC with integrated MEMS resonator

Applications

  • Prototyping
  • Science fair projects
  • Maker and hobbyist projects
  • Science and electronics education
  • Analog peripheral testing and integration
MAXREFDES72
Pmod Adapter for Arduino Platform
5878fig01
maxrefdes72-birds-eye

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