9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification, and

TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining

suitability of components for their purposes. Customers should validate and test their design

implementation to confirm system functionality.

9.1 Application Information

The TMUX9616 is a 16-channel low harmonic distortion, low resistance, low capacitance, high-voltage analog

switch integrated circuit (IC) with latch-up immunity. Each device has 16 independently selectable 1:1, single-

pole, single-throw (SPST) switch channels. The device can support high voltage supplies and signals up to

±110V. It comes in popular, pin-to-pin (P2P) 48-pin QFP package for 16CH SPST multiplexers. This makes

TMUX9616 a great replacement in an existing design with fixed foot print, where improvement is needed on

harmonic distortion performance of the system. Also, TMUX9616 a great solution any time the application may

require a leaded package.

9.2 Typical Application

Figure 9-1 shows a multiplexer configuration that is found in a variety of ultrasound applications. Two TX7516

are used to provide 32 TX/RX channels, and 8x TMUX9616 are used to multiplex the 32 TX/RX channels to 128

piezoelectric (PZT) elements, making a 4:1 multiplexer configuration. An FPGA controls both the TX7516 and

TMUX9616 using SPI.

PHV_A/B MHV_A/B

AVDD_P

AVDD_M

VDD_IO

SCLK_P

SCLK_M

SDATA_P_0

SDATA_M_0

SDATA_P_1

SENP

SENM

SDATA_M_1

TMUX9616

OUT_1

S1

S33

S65

S97

S2

S34

S66

S98

OUT_2

S3

S35

S67

S99

S32

S64

S96

S128

VDD

VLL

BF_SYNCP

BF_SYNCM

SDOUT

LMK62A2

200MHz

LMK00304

Bu er

VSYS_5V

VSYS_-5V

VSYS_1.8V

MHV(-100/-60V)

PHV(+100V/+60V)

PMHV(+110V)

GND

8x

FPGA

OUT_3

OUT_32

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D125

D126

D127

D128

128

PZT

TX7516

2x

VSYS_5V

VSS

MMHV(-110V)

Figure 9-1. TMUX9616 Application Schematic

TMUX9616

SCDS436 – SEPTEMBER 2023

www.ti.com

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