MUX506 Datasheet, PDF (31/38 Pages) Texas Instruments – 36-V, Low-Capacitance, Low-Leakage-Current, Precision Analog Multiplexers

www.ti.com
11 Layout
MUX506, MUX507
SBAS803 – NOVEMBER 2016
11.1 Layout Guidelines
Figure 45 illustrates an example of a PCB layout with the MUX506IPW, and Figure 46 illustrates an example of a
PCB layout with MUX507IPW.
Some key considerations are:
1. Decouple the VDD and VSS pins with a 0.1-µF capacitor, placed as close to the pin as possible. Make sure
that the capacitor voltage rating is sufficient for the V_DD and V_SS supplies.
2. Keep the input lines as short as possible. In case of the differential signal, make sure the A inputs and B
inputs are as symmetric as possible.
3. Use a solid ground plane to help distribute heat and reduce electromagnetic interference (EMI) noise pickup.
4. Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if
possible, and only make perpendicular crossings when necessary.
11.2 Layout Example
Via to
GND Plane
C
Via to
GND Plane
VDD
D
NC
VSS
C
NC
S8
S16
S7
S15
S6
S14
S5
S13
S4
MUX506IPW
S12
S3
S11
S2
S10
S1
S9
EN
GND
A0
NC
A1
A3
A2
Figure 45. MUX506IPW Layout Example
Via to
GND Plane
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: MUX506 MUX507
Submit Documentation Feedback
31