Microchip MD0100 Bruksanvisning
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MD0100
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2018 Microchip Technology Inc. DS20005738A-page 1
MD0100
Features
• Up to ±100V Input Voltage Protection
• Low On-Resistance, 15Ω Typical
• Fast-Switching Speed
• Effective Simple Two-Terminal Device
• No External Supplies Needed
Applications
• Medical Ultrasound Imaging
• Non-Destructive Testing Applications
• Fast Resettable Fuses
• High-Side Switches
• Data Acquisition
General Description
The MD0100 is a high-voltage, two-terminal,
bi-directional, current-limiting protection device. The
two terminals are interchangeable. It is designed to
protect a low-noise receiver from high-voltage transmit
pulses in ultrasound applications and is commonly
referred to as a transmit-and-receive (T/R) switch.
The MD0100 can be considered as a normally closed
switch with a typical switch resistance of 15Ω that
allows small signals to pass. When the voltage drop
across the two terminals exceeds a nominal value of
±2V, the device turns off. In the OFF state, the MD0100
can withstand up to ±100V across its terminals. A small
amount of current (typically 200 µA) is allowed to flow
through.
The applications for the MD0100 are not limited to just
ultrasound. It can also be used as resettable fuses to
protect power lines, output short-circuit protection and
data acquisition. The MD0100 is available in an
SOT-89 package as a single-channel device, as well as
in a 4 mm x 4 mm 8-lead DFN package as a
dual-channel device.
Package Type
8-lead DFN
(Top view)
See Table 2-1 and Table 2-2 for pin information.
3-lead SOT-89
(Top view)
A COM B
COM
COM1
COM2
8
7
6
5
1
2
3
4
COM1
COM1
COM2
COM2
A1
B1
A2
B2
s
Single/Dual-Channel High-Voltage Protection T/R Switch
Switch Control
COM
A B
MD0100
DS20005738A-page 2 2018 Microchip Technology Inc.
Functional Block Diagram
2018 Microchip Technology Inc. DS20005738A-page 3
MD0100
Typical Application Circuit
Transmitter
Piezo
Transducers
B A
Receiver
T
X
R
X
High Voltage
Switches
+90V
-90V
T/R Switch
MD0100
Logic
Control
and
Signal
Processing
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | MD0100 |
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