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MAX4937CTN-T

Description
Switch ICs - Various High Voltage T/R Switch
Categorysemiconductor    Other integrated circuit (IC)   
File Size1MB,19 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX4937CTN-T Overview

Switch ICs - Various High Voltage T/R Switch

MAX4937CTN-T Parametric

Parameter NameAttribute value
Product CategorySwitch ICs - Various
ManufacturerMaxim
RoHSDetails
ProductReceive Switches
Number of Switches8 Switch
ConfigurationDiode Bridge
On Resistance - Max-
Operating Supply Voltage1.62 V to 5.5 V, +/- 2.7 V to +/- 5.5 V
Maximum Operating Temperature+ 70 C
Mounting StyleSMD/SMT
Package / CaseTQFN-56 EP
PackagingReel
Bandwidth65 MHz
Minimum Operating Temperature0 C
Off Time - Max5 us
On Time - Max200 ns
Factory Pack Quantity2500
Supply Current - Max1 uA, 2 mA, - 1.15 mA
Supply Voltage - Max5.5 V, - 2.7 V
Supply Voltage - Min1.62 V, 2.7 V, - 5.5 V
19-5541; Rev 1; 3/11
Octal High-Voltage Transmit/Receive Switches
General Description
The MAX4936–MAX4939 are octal, high-voltage, transmit/
receive (T/R) switches. The T/R switches are based on
a diode bridge topology, and the amount of current
in the diode bridges can be programmed through an
SPIK interface. All devices feature a latch-clear input
to asynchronously turn off all T/R switches and put the
device into a low-power shutdown mode. The MAX4936/
MAX4938 include the T/R switch and grass-clipping
diodes, performing both transmit and receive operations.
The MAX4937/MAX4939 include just the T/R switch and
perform the receive operation only.
The MAX4936/MAX4938 transmit path is low impedance
during high-voltage transmit and high impedance during
low-voltage receive, providing isolation between transmit
and receive circuitry. The high-voltage transmit path is
high bandwidth, low distortion, and low jitter.
The receive path for all devices is low impedance dur-
ing low-voltage receive and high impedance during
high-voltage transmit, providing protection to the receive
circuitry. The low-voltage receive path is high bandwidth,
low noise, low distortion, and low jitter. Each T/R switch
can be individually programmed on or off, allowing these
devices to also be used as receive path multiplexers.
The MAX4936/MAX4937 feature clamping diodes to
protect the receiver input from voltage spikes due to
leakage currents flowing through the T/R switches dur-
ing transmission. The MAX4938/MAX4939 do not have
clamping diodes and rely on clamping diodes integrated
in the receiver front end.
All devices are available in a small, 56-pin, 5mm x 11mm
TQFN package, and are specified over the commercial
0NC to +70NC temperature range.
Current Only
S
Low Noise < 0.5nV/√Hz (typ) with 1.5mA Bias
Features
S
Low Power: Low Impedance (5ω) with 1.5mA Bias
MAX4936–MAX4939
Current Only
S
Wide -3dB Bandwidth 65MHz (typ)
S
Easy Programming with SPI Interface
S
High Density (8 Channels per Package)
S
Grass-Clipping Diodes with Low-Voltage Isolation
(MAX4936/MAX4938)
S
Output Clamp Diodes for Receiver Protection
(MAX4936/MAX4937)
S
Global Shutdown Control (CLR)
S
Each T/R Switch Can Be Individually Programmed
On or Off
S
Low-Voltage Receive Path with High-Voltage
Protection
S
Space-Saving, 5mm x 11mm, 56-Pin TQFN Package
Applications
Medical/Industrial Imaging
Ultrasound
High-Voltage Transmit and Low-Voltage Isolation
Ordering Information/Selector Guide
PART
MAX4936CTN+
MAX4937CTN+
MAX4938CTN+**
MAX4939CTN+**
LOW-VOLTAGE
ISOLATION
Yes
No
Yes
No
HIGH-VOLTAGE
PROTECTION
Yes
Yes
Yes
Yes
OUTPUT CLAMP
Yes
Yes
No
No
TEMP RANGE
0NC to +70NC
0NC to +70NC
0NC to +70NC
0NC to +70NC
PIN-PACKAGE
56 TQFN-EP*
56 TQFN-EP*
56 TQFN-EP*
56 TQFN-EP*
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
**Future product—contact factory for availability.
SPI is a trademark of Motorola, Inc.
_______________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MAX4937CTN-T Related Products

MAX4937CTN-T MAX4938CTN-T MAX4936CTN-T
Description Switch ICs - Various High Voltage T/R Switch Switch ICs - Various High Voltage T/R Switch Switch ICs - Various High Voltage T/R Switch
Product Category Switch ICs - Various Switch ICs - Various Switch ICs - Various
Manufacturer Maxim Maxim Maxim
RoHS Details Details Details
Product Receive Switches Transmit/Receive Switches Transmit/Receive Switches
Number of Switches 8 Switch 8 Switch 8 Switch
Configuration Diode Bridge Diode Bridge Diode Bridge
Operating Supply Voltage 1.62 V to 5.5 V, +/- 2.7 V to +/- 5.5 V 1.62 V to 5.5 V, +/- 2.7 V to +/- 5.5 V 1.62 V to 5.5 V, +/- 2.7 V to +/- 5.5 V
Maximum Operating Temperature + 70 C + 70 C + 70 C
Mounting Style SMD/SMT SMD/SMT SMD/SMT
Package / Case TQFN-56 EP TQFN-56 EP TQFN-56 EP
Packaging Reel Reel Reel
Bandwidth 65 MHz 65 MHz 65 MHz
Minimum Operating Temperature 0 C 0 C 0 C
Off Time - Max 5 us 5 us 5 us
On Time - Max 200 ns 200 ns 200 ns
Factory Pack Quantity 2500 2500 2500
Supply Current - Max 1 uA, 2 mA, - 1.15 mA 1 uA, 2 mA, - 1.15 mA 1 uA, 2 mA, - 1.15 mA
Supply Voltage - Max 5.5 V, - 2.7 V 5.5 V, - 2.7 V 5.5 V, - 2.7 V
Supply Voltage - Min 1.62 V, 2.7 V, - 5.5 V 1.62 V, 2.7 V, - 5.5 V 1.62 V, 2.7 V, - 5.5 V
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