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Beyond-the-Rails 16:2 Multiplexer

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

Product Details

Key Features

Applications/Uses

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol I2C
Configuration 16-to-2
Crosspoint
# Channels 2
VSUPPLY (Single) (V) (min) 1.6
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) -5.5
VSIGNAL (V) (max) 5.5
Dynamic Range (max) (V) (max) 11
RON (Ω) (max) 8
RFLAT(ON) (Ω) (typ) 0.025
Package/Pins TQFN-CU/28
Budgetary
Price (See Notes)
3.83
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Simplified Block Diagram

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Parameters

Parametric specs for Switches and Multiplexers (Low Voltage)
Protocol I2C
Configuration 16-to-2
Crosspoint
# Channels 2
VSUPPLY (Single) (V) (min) 1.6
VSUPPLY (Single) (V) (max) 5.5
VSIGNAL (V) (min) -5.5
VSIGNAL (V) (max) 5.5
Dynamic Range (max) (V) (max) 11
RON (Ω) (max) 8
RFLAT(ON) (Ω) (typ) 0.025
Package/Pins TQFN-CU/28
Budgetary
Price (See Notes)
3.83

Key Features

  • 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

Applications/Uses

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

Description

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).

Simplified Block Diagram

MAX14661: Functional Diagram MAX14661: 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 .