Microchip Technology MD0101
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 RGND.| Part No. | MD0101 |
|---|---|
| Datasheet | MD0101 Download |
| Manufacturer |  Microchip Technology |
| Description | High-Voltage Protection T/R Switch |
| Buy | Stock & Price |
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 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.
