MP4835A

MP4835A

32-Channel, High-Voltage Analog Switch with Output Bleed Resistors and 5V Bias

Datasheet

Description

The MP4835A is a 32-channel, high-voltage, single-pole/single-throw (SPST) analog switch with integrated output bleed resistors, designed for medical ultrasound imaging applications. It is designed to multiplex the transmission, and can receive voltages to and from multiple piezoelectric transducers (PZTs).

The output switches are controlled by a 32-bit serial shift register, followed by a 32-bit data latch. A data out (DOUT) pin is provided to allow for multiple devices to be cascaded together. This helps minimize the number of input/output (I/O) control lines. A logic high signal in the data latch turns the corresponding analog switch on, whereas a logic low signal turns it off.

The MP4835A does not require any high-voltage supplies. Only two low-voltage supplies are required (3.3V and 5V). The analog switch can block or pass analog voltages up to ±100V with peak currents of up to ±1.8A. The MP4835A is available in a QFN-72 (10mmx10mm) package.

Features & Benefits

No High-Voltage Supplies Required
32 Channels
Up to ±100V Analog Signals
14Ω Typical Switch Resistance
±1.8A Typical Switch Peak Current
Off-Isolation of -66dB at 5MHz
Integrated Output Bleed Resistor
60MHz Clock Frequency
5V Bias Supply
Available in a QFN-72 (10mmx10mm) Package

Active Part Numbers:

MP4835AGRD-T

Related Products

EV4835A-RD-00A 180V, 32-Channel Analog Switch Evaluation Board

The EV4835A-RD-00A is an evaluation board for the MP4835A, a high-voltage, 32-channel analog switch. The MP4835A is designed for medical ultrasound applications. It can also be used for non-destructive test (NDT) applications, as it is very similar to medical ultrasound.

The high-voltage analog switches are used to multiplex the transmitter and receiver circuitries to different piezoelectric transducer (PZT) elements. The MP4835A has a resistor connected to ground on the output pin (SWOUT). This helps ensure that a significant DC voltage does not build up across the PZT element. The switches can be turned on/off via a serial 32-bit shift register. The serial control interface helps minimize the number of I/O connections.

$50.00
+ tax