16.2.2.1 Design Requirements

Table 16-2. Design Parameters

PARAMETERS

VALUES

Supply (VDD)

1.8V to 5.5V

MUX I/O signal range (VS, VD)

-15V to 15V (Beyond the Supply)

Control logic thresholds (VSEL)

1.8V to 5.5V

16.2.2.2 Detailed Design Procedure

The TMUX48xx can support bidirectional signals beyond the supply without any external components except for

the supply decoupling capacitors. Section 15.3.1 shows how the signal range is above and below the device

supply range. Additionally with a very low on-resistance and an ultra flat response, the TMUX48xx has a very

low THD+N as well as a reduced impact to DC losses and thermal self-heating. These features make the

TMUX48xx ideal for high attenuation transducer application. For a more detailed analysis of the flow meter

system refer to Section 16.2.2.3 .

16.2.2.3 Application Curve

The linear response of the TMUX48xx reduces any impact to signal distortion and loss, making it an excellent

choice for high precision industrial systems. The TMUX48xx utilizes a specialized architecture to keep the

on-resistance extremely flat, while supporting signals beyond the supply from -15V to 15V. Additionally, the

TMUX48xx supports a wide frequency range to drive output capacitive transducers. This with the low on-

resistance results in an extremely low insertion loss as well.

VS or VD - Source or Drain Voltage (V)

-15

-12

-9

-6

-3

0

3

6

9

12

15

0.15

0.151

0.152

0.153

0.154

0.155

0.156

0.157

0.158

0.159

0.16

0.161

0.162

0.163

0.164

0.165

0.166

0.167

0.168

VDD = 1.8 V

VDD = 2.5 V

VDD = 3.3 V

VDD = 4.5 V

VDD = 5 V

VDD = 5.5 V

Figure 16-5. Insertion Loss Across Frequency

TMUX4821, TMUX4819

SCDS487A – OCTOBER 2025 – REVISED DECEMBER 2025

www.ti.com

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