Microchip MD0101 Manual

Microchip Ikke kategoriseret MD0101

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Side 1/16
2020 Microchip Technology Inc. DS20005916A-page 1
MD0101
Features
• Up to ±100V Input Voltage Protection
• Low On-Resistance, 15Ω Typical
• Integrated Clamp Diodes
• Fast Switching Speed
• Four Electrically Isolated Channels
• No External Supplies Needed
Applications
• Medical Ultrasound Imaging
• Non-Destructive Testing Applications
• Fast Resettable Fuses
• High-Side Switches
• Data Acquisition
General Description
The MD0101 is a four-channel high-voltage
current-limiting protection device. It is designed to
protect a low-noise receiver from high-voltage transmit
pulses in ultrasound applications and is commonly
referred to as a T/R (transmit-and-receive) switch.
Each channel has three terminals: TX, RX, and R
GND.
The analog switch terminals are TX and RX. RX has
integrated clamping diodes to RGND to protect the
receiver against high voltages. The output voltages will
be clamped by the anti-parallel diodes to RGND at
about ±0.6V.
The MD0101 can be considered as a normally closed
switch with a typical switch resistance of 15Ω, allowing
small signals to pass. Once the voltage drop across the
switch exceeds a nominal value of ±1V, the device
turns off. In the OFF state, the MD0101 can withstand
up to ±100V across its terminals. A small amount of
current (200 µA, typically) is allowed to flow through.
The MD0101 is not limited to just ultrasound
applications. It can also be used as resettable fuses to
protect power lines, for output short-circuit protection,
and for protection of data acquisition instruments. The
MD0101 is available in an 18-lead, 5 x 5 mm DFN
package.
Package Type
18-lead DFN
(Top view)
See Table 2-1 for pin information.
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
NC
Rx1
RGND1
Rx2
RGND2
Rx3
RGND3
Rx4
RGND4
NC
Tx1
NC
Tx2
NC
Tx3
NC
Tx4
NC
High-Voltage Protection T/R Switch with Clamp Diodes
MD0101
DS20005916A-page 2 2020 Microchip Technology Inc.
Functional Block Diagram
Switch Control
TX RX
RGND

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MD0101

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