1 Features

• Only +5 V bias supply required

– Very low power: 9.5 mW (typ) all 32CH

switching at 50 kHz

• Wide input signal range:

– Up to ±110 V, 220 VPP

– ±120 V, 240 VPP voltage overshoots supported

• Low off capacitance: 10.6 pF

• Low on resistance

• Up to 100 MHz data shift clock frequency

• Logic levels: 1.8 V to 5 V

• Integrated NDIN to invert input data polarity

• Fast turn-on time: 3 μs (maximum)

• Excellent HD2PC performance: -65 dB at 5 MHz

• Small BGA and QFN package options with

optimized pin-out

• Integrated thermal shutdown for improved system

reliability

• Integrated bleed resistors on the outputs

• Latch-up immunity by device construction

• Extended temperature range: –40°C to 125°C

2 Applications

• Medical ultrasound imaging

• Ultrasound smart probe

• Non-destructive testing (NDT) metal flaw detection

• Piezoelectric transducer drivers

• Ultrasonic flow transmitters

• Printers

• Optical MEMS modules

3 Description

The TMUX9832 is a 32-channel low harmonic

distortion, low resistance, low capacitance highvoltage

analog switch integrated circuit (IC) with

latch-up immunity. Each device has 32 independently

selectable 1:1, single-pole, single-throw (SPST)

switch channels. The device only requires a +5 V

supply, while still being able to support ±110 V analog

signals. TMUX9832 also integrates bleed resistors on

its drain (Dx) pins to discharge capacitive loads, like

piezoelectric transducers. TMUX9832 is designed for

medical ultrasound imaging and other piezoelectric

transducer driver applications.

TMUX9832 integrates cascadable 32-bit shift register

with latches for controlling each of the 32 switches.

The daisy chain capability allows for many TMUX9832

devices to be controlled without requiring a separate

chip-select for every device. To reduce noise in the

signal path due to potential clock feed-through, the

active low latch enable can be held high while data is

loaded into the shift registers. The 32-bit shift register

can operate off of a 1.8 V – 5 V power supply and

support clock speeds up to 100 MHz.