TMUX1133 datasheet(26/42 Pages) TI2

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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, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

The TMUX11xx family offers ultra-low input/output leakage currents and low charge injection. These devices

operate up to 5.5V, and offer true rail-to-rail input and output switching of both analog and digital signals. The

TMUX113x devices have low on-capacitance which allows faster settling time when switching between inputs in

the time domain. These features make the TMUX11xx devices a family of precision, high-performance switches

and multiplexers for low-voltage applications.

9.2 Typical Application

Figure 9-1 shows an example circuit where the TMUX1133 or TMUX1134 can be used to minimize board space

by integrating various applications into a multi-channel 2:1 (SPDT) switch. The application uses a 3-channel, or

4-channel SPDT switch to optimize the tradeoffs of system flexibility and board space.

System

S1A

S1B

SEL1

Op Amp

Precision

ADC

VSS

0.1µF

Voltage Input

Calibration Path

S2A

S2B

SEL2

Op Amp

Precision

ADC

Voltage Input

Current Input

Precision

DAC

S4A

S4B

SEL4

Voltage Input

Voltage Ouput

250

Precision

ADC

Precision

DAC

Analog Input / Output

0 V-5 V

4-20 mA

0 V-5 V

VDD

0.1µF

RPD

10 k

To µC

RPD

10 k

To µC

RPD

10 k

To µC

Figure 9-1. Multi-channel 2:1, Switching Applications

9.2.1 Design Requirements

For this design example, use the parameters listed in Table 9-1.

Table 9-1. Design Parameters

PARAMETERS

VALUES

Supply (VDD)

Input / Output Voltage range

0V to 5V

Input / Output Current range

4mA to 20mA

Control logic thresholds

1.8V compatible

TMUX1133, TMUX1134

SCDS412B – JUNE 2019 – REVISED JANUARY 2024

www.ti.com

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