參數(shù)資料
型號： MAX4938CTN+
廠商： Maxim Integrated Products
文件頁數(shù)： 1/19頁
文件大小： 0K
描述： IC TRANSMIT/RCVR SWITCH 56-TQFN
應用說明： Ultrasound Imaging Systems Application Note
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 27
功能： 開關
電壓電源： 單/雙電源
電壓 - 電源，單路/雙路(±)： 1.62 V ~ 5.5 V，±1.35 V ~ 2.75 V
電流 - 電源： 1.5mA
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 56-WFQFN 裸露焊盤
供應商設備封裝： 56-TQFN-EP（5x11）
包裝： 管件
_______________________________________________________________ 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.
MAX4936–MAX4939
Octal High-Voltage Transmit/Receive Switches
19-5541; Rev 1; 3/11
Ordering Information/Selector Guide
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.
Features
S
Low Power: Low Impedance (5ω) with 1.5mA Bias
Current Only
S
Low Noise < 0.5nV/√Hz (typ) with 1.5mA Bias
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
SPI is a trademark of Motorola, Inc.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
**Future product—contact factory for availability.
PART
LOW-VOLTAGE
ISOLATION
HIGH-VOLTAGE
PROTECTION
OUTPUT CLAMP
TEMP RANGE
PIN-PACKAGE
MAX4936CTN+
Yes
0NC to +70NC
56 TQFN-EP*
MAX4937CTN+
No
Yes
0NC to +70NC
56 TQFN-EP*
MAX4938CTN+**
Yes
No
0NC to +70NC
56 TQFN-EP*
MAX4939CTN+**
No
Yes
No
0NC to +70NC
56 TQFN-EP*
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相關代理商/技術參數(shù)
參數(shù)描述
MAX4938CTN+ 功能描述:模擬開關 IC High Voltage T/R Switch RoHS:否 制造商:Texas Instruments 開關數(shù)量:2 開關配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4938CTN+T 功能描述:模擬開關 IC High Voltage T/R Switch RoHS:否 制造商:Texas Instruments 開關數(shù)量:2 開關配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4939CTN+ 功能描述:模擬開關 IC High Voltage T/R Switch RoHS:否 制造商:Texas Instruments 開關數(shù)量:2 開關配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4939CTN+T 功能描述:模擬開關 IC High Voltage T/R Switch RoHS:否 制造商:Texas Instruments 開關數(shù)量:2 開關配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4940ACTN+ 功能描述:功率驅(qū)動器IC Unipolar/Bipolar Digital Pulser RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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