DESCRIPTION
The MP4864A is a 64-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 transmit and receive
voltages to and from multiple piezoelectric
transducers (PZTs).
The output switches are controlled by a 64-bit
serial shift register, followed by a 64-bit data
latch. A data out (DOUT) pin allows 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
on the corresponding analog switch; a logic low
signal turns off the corresponding analog switch.
The MP4864A does not require any high-voltage
supplies. It only requires two low-voltage
supplies (3.3V and 12V). The analog switch can
block or pass analog voltages up to ±90V with
peak currents of up to ±2A. The MP4864A is
available in a BGA-144 (10mmx10mm) package.

FEATURES
 No High-Voltage Supplies Required
 64 Channels
 Up to ±90V Analog Signals
 14Ω Typical Switch Resistance
 ±2.0A Typical Switch Peak Current
 Off-Isolation of -66dB at 5MHz
 Integrated Output Bleed Resistors
 80MHz Clock Frequency
 Available in a BGA-144 (10mmx10mm)
Package

APPLICATIONS
 Medical Ultrasound Imaging
 Non-Destructive Testing (NDT)