General Description

The Supertex MD0101 is a four channel, high voltage, current limiting protection device. It is designed to protect a low noise receiver from the 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. The analog switch terminals are Tx and Rx. Rx has integrated clamping diodes to RGND to protect the receiver against high voltages. Voltages greater than ±0.6V will start forward biasing the clamp diodes to RGND.

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

► NDT applications

► Fast resettable fuses

► High side switches

► Data acquisition