9.4 Detailed Design Procedure

The TMUX1208-Q1 can be operated without any external components except for the supply decoupling

capacitors. If the parts desired power-up state is disabled, the enable pin should have a weak pull-down resistor

and be controlled by the MCU via GPIO. All inputs being muxed to the ADC of the MCU must fall within the

recommend operating conditions of the TMUX1208-Q1 including signal range and continuous current. For this

design with a supply of 5 V, the signal range can be 0 V to 5 V and the max continuous current can be 30 mA.

9.5 Application Curve

Source or Drain Voltage (V)

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0

20

40

60

80

D001

Figure 9-2. On-Resistance vs Source or Drain Voltage

9 Power Supply Recommendations

The TMUX1208-Q1 operate across a wide supply range of 1.08 V to 5.5 V. Do not exceed the absolute

maximum ratings because stresses beyond the listed ratings can cause permanent damage to the devices.

to other components. Good power-supply decoupling is important to achieve optimum performance. For

ground. Place the bypass capacitors as close to the power supply pins of the device as possible using low-

impedance connections. TI recommends using multi-layer ceramic chip capacitors (MLCCs) that offer low

equivalent series resistance (ESR) and inductance (ESL) characteristics for power-supply decoupling purposes.

For very sensitive systems, or for systems in harsh noise environments, avoiding the use of vias for connecting

the capacitors to the device pins may offer superior noise immunity. The use of multiple vias in parallel lowers

the overall inductance and is beneficial for connections to ground planes.

www.ti.com

TMUX1208-Q1

SCDS415A – AUGUST 2019 – REVISED JULY 2020

Copyright © 2020 Texas Instruments Incorporated

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Product Folder Links: TMUX1208-Q1