MAX14724 Switch Multiplexer Datasheet

MAX14724 Datasheet, PDF, Equivalent


Part Number

MAX14724

Description

Serial-Controlled 8:4 Matrix Switch Multiplexer

Manufacture

Maxim Integrated

Total Page 25 Pages
Datasheet
Download MAX14724 Datasheet


MAX14724
MAX14724
Serial-Controlled 8:4 Matrix Switch Multiplexer
General Description
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.
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 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.
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).
Applications
● Medical Equipment
● Data Acquisition
● Signal Switching
● Battery-Powered Equipment
Ordering Information appears at end of data sheet.
Typical Application Circuit
Benefits and Features
● Flexible Architecture Enables Ease of Design and Control
• 8:4 Matrix Switch Multiplexer
• Fully Programmable with Simultaneous Updates
• Independent Control of Each Switch
• Serial Control
-- I2C with Address-Select Pin
-- SPI with DO for Daisy-Chain
-- 1.6V Logic Compatible
● Low Distortion Switching Improves System
Performance
1Ω RON (typ) with +5V or ±2.5V Supply
0.5Ω RON Match Between Channels (typ)
0.2Ω RON Flatness Over Signal Range (typ)
• Low Leakage Current: 5nA at +25°C (typ)
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_
High-Integration Multiplexing Reduces Footprint and
System Complexity
• 20 WLP (2mm x 1.7mm)
• 20 TQFN (4mm x 4mm)
3.3V
SDA
µCONTROLLER SCL
VL
I2C/CS
ADD/DO
SDA/DI
SCL/SCK
MAX14724
GND
V+
COM_
NO_
V-
2.5V
B1-B4
A1-A8
-2.5V
VL
I2C/CS
ADD/DO
SDA/DI
SCL/SCK
MAX14724
GND
V+
COM_
NO_
V-
2.5V
B5-B8
A1-A8
-2.5V
19-7575; Rev 2; 9/15

MAX14724
MAX14724
Serial-Controlled 8:4 Matrix Switch Multiplexer
Absolute Maximum Ratings
V+.............................................................................-0.3V to +6V
V- ..............................................................................-6V to +0.3V
VL.............................................................................-0.3V to +6V
V+ to V-....................................................................-0.3V to +6V
VL to V-.....................................................................-0.3V to +9V
NO_, COM_ (Note 1)...........................(V- - 0.3V) to (V+ + 0.3V)
SCL/SCK, SDA/DI, I2C/CS, ADD/DO......................-0.3V to +6V
ADD/DO to V-...........................................................-0.3V to +9V
Continuous Current into NO_, COM_...............................±50mA
Peak Current into NO_, COM_
(pulsed at 1ms, 10% duty cycle).................................±100mA
Continuous Power Dissipation
20 TQFN (derate 25.6mW/°C above +70°C).............2051mW
20 WLP(derate 21.7mW/°C above +70°C)................1736mW
Operating Temperature Range............................ -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -40°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°C
Note 1: Signals on COM_ and NO_ exceeding V+ or V- are clamped by internal diodes.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics (Note 2)
TQFN
Junction-to-Ambient Thermal Resistance (θJA)...........39°C/W
Junction-to-Case Thermal Resistance (θJC)..................6°C/W
WLP
Junction-to-Ambient Thermal Resistance (θJA)...........46°C/W
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(V+ = 1.6V to 5V, V- = (V+ - 5.5V) to 0V, VL = 0V to 5.5V (Notes 3, 4), TA = -40°C to +85°C, unless otherwise noted. Typical values are
at V+ = 2.5V, V- = -2.5V, VL = 2.5V, TA = +25°C.) (Note 5)
PARAMETER
POWER SUPPLY
V+ Supply
V- Supply
VL Supply
V+ Supply Current
VL Supply Current
ANALOG SWITCH (Note 6)
Analog Signal Range
On-Resistance
On-Resistance Match Between
Channels (Note 7)
SYMBOL
V+
V-
VL
I+
IVL
VCOM_,
VNO_
RON
ΔRON
CONDITIONS
V- > -2.5V
V- ≤ -2.5V
TA = +25°C
TA = +25°C
ICOM_ = 10mA, V+ = 2.5V,
V- = -2.5V, VNO_ = V- or V+
ICOM_ = 10mA, V+ = 3.0V,
V- = 0V, VNO_ = 1.5V
ICOM_ = 10mA, V+ = 2.5V,
V- = -2.5V, VNO_ = V- or V+
ICOM_ = 10mA, V+ = 3.0V,
V- = 0V , VNO_ = 1.5V
MIN
TYP
MAX
UNITS
1.6
V+ - 5.5
0
0
1
1.5
5.5
0
5.5
V- + 8
5
5
V
V
V
µA
µA
V- V+
13
5
0.5 1.25
1.35
V
Ω
Ω
www.maximintegrated.com
Maxim Integrated 2


Features MAX14724 Serial-Controlled 8:4 Matrix S witch Multiplexer General Description The MAX14724 is a serial-controlled, 8: 4 full-matrix analog multiplexer. The d evice operates from either a single wid e supply or dual ±2.5V supplies. A wid e operating range makes the device idea l for battery-powered, portable instrum ents. All channels guarantee break-befo re-make switching. The serial control i s selectable between I2C and SPI. Both modes provide individual control of eac h independent switch so that any combin ation of switches can be applied. I2C m ode provides one address-select pin, al lowing for addressing up to two devices on a single bus. The SPI mode includes a DO pin that can be used to daisy-cha in multiple devices together with a sin gle select signal. The MAX14724 feature s bidirectional operation and can handl e rail-to-rail analog signals. All cont rol inputs are 1.6V-logic compatible. T his device is available in a small 20-p in, 4mm x 4mm, TQFN and 20-bump, 2mm x 1.7mm, wafer-level packag.
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