TMUX7612 datasheet(28/54 Pages) TI

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7.3.5 Power-Up Sequence Free

The TMUX7612 supports any power up sequencing. With the supply rails (VDD and VSS), any rail can be

powered on first. Similarly, when powering down the supply rails can be powered down in any order.

7.3.6 Ultra-Low Charge Injection

The TMUX7612 contains specialized architecture to significantly reduce charge injection, which is consistent

across supply and bias conditions. The result is a dramatic drop in AC noise when switching compared to other

low on-resistance multiplexers or switches.

VS - Source Voltage (V)

-12.5

-6.25

6.25

12.5

18.75

31.25

37.5

-15

-10

-5

TA = -40C

TA = 25C

TA = 50C

TA = 85C

TA = 125C

VDD = 37.5 V, VSS = -12.5 V

Figure 7-1. Charge Injection vs Source Voltage

7.3.7 Ultra-Low Leakage Current

The TMUX7612 provides extremely low on-leakage and off-leakage currents. This device is capable of switching

signals from high source-impedance inputs into a high input-impedance op amp with minimal offset error

because of the ultra-low leakage currents. Figure 7-2 shows typical leakage currents of the TMUX7612 devices

versus source or drain voltage at VDD = 32.5 V, VSS = -12.5 V and 50°C. The typical performance seen here is

less than 0.2 nA at 50°C, which enables the TMUX7612 to be used in a wide array of precision applications.

VS or VD - Source or Drain Voltage (V)

-12.5

-7.5

-2.5

2.5

7.5

12.5

17.5

22.5

27.5

32.5

37.5

-1

-0.9

-0.8

-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

ION

IOFF

VDD = 37.5 V, VSS = -12.5 V

Figure 7-2. Leakage Current at 50°C vs Bias Voltage

7.4 Device Functional Modes

The TMUX7612 has four independently selectable single-pole, single-throw switches that are turned-on or

turned-off based on the state of the corresponding select pin. The control pins operate down to 1.8 V logic and

can be as high as 44 V.

The TMUX7612 devices can be operated without any external components except for the supply decoupling

capacitors. The SELx pins have internal pull-down resistors.

TMUX7612

SCDS466A – AUGUST 2023 – REVISED DECEMBER 2024

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