MAX14724
Serial-Controlled 8:4 Matrix Switch Multiplexer
General Description
Benefits and Features
● Flexible Architecture Enables Ease of Design and Control
The MAX14724 is a serial-controlled, 8:4 full-matrix analog
multiplexer. The device operates from either a single wide
supply or dual ±2.5V supplies. A wide operating range
makes the device ideal for battery-powered, portable
instruments. All channels guarantee break-before-make
switching.
• 8:4 Matrix Switch Multiplexer
• Fully Programmable with Simultaneous Updates
• Independent Control of Each Switch
• Serial Control
2
- I C with Address-Select Pin
- SPI with DO for Daisy-Chain
- 1.6V Logic Compatible
● Low Distortion Switching Improves System
Performance
2
The serial control is selectable between I C and SPI. Both
modes provide individual control of each independent switch
so that any combination of switches can be applied.
I C mode provides one address-select pin, allowing for
addressing up to two devices on a single bus. The SPI
mode includes a DO pin that can be used to daisy-chain
multiple devices together with a single select signal.
2
• 1Ω R
(typ) with +5V or ±2.5V Supply
ON
• 0.5Ω R
• 0.2Ω R
Match Between Channels (typ)
Flatness Over Signal Range (typ)
ON
ON
• Low Leakage Current: 5nA at +25°C (typ)
The MAX14724 features bidirectional operation and
can handle rail-to-rail analog signals. All control inputs
are 1.6V-logic compatible. This device is available in
a small 20-pin, 4mm x 4mm, TQFN and 20-bump,
2mm x 1.7mm, wafer-level package (WLP).
● Integrated Protection for System Reliability
• ±30kV HBM on NO_ and COM_
• ±15kV IEC 61000-4-2 Air Gap Discharge on NO_
and COM_
• ±10kV IEC 61000-4-2 Contact Discharge on NO_
and COM_
Applications
● Medical Equipment
● Data Acquisition
● High-Integration Multiplexing Reduces Footprint and
System Complexity
• 20 WLP (2mm x 1.7mm)
● Signal Switching
• 20 TQFN (4mm x 4mm)
● Battery-Powered Equipment
Ordering Information appears at end of data sheet.
Typical Application Circuit
3.3V
V+
2.5V
B1-B4
VL
I2C/CS
ADD/DO
SDA/DI
SCL/SCK
COM_
MAX14724
A1-A8
NO_
V-
-2.5V
GND
SDA
µCONTROLLER
SCL
V+
2.5V
B5-B8
VL
I2C/CS
ADD/DO
SDA/DI
SCL/SCK
COM_
MAX14724
A1-A8
NO_
V-
-2.5V
GND
19-7575; Rev 2; 9/15