V23832-T2131-M101

V23832-R121-M101

Technical Data

Data Sheet

17

2003-11-19

Recommended Power Supply Filtering

A power supply filtering is recommended for the transmitter and the receiver module. A

possible filtering scheme is shown in Figure 9. The module signal and chassis ground

refer to a common ground plane, which can be contacted to the PCB ground by the

mounting screws (see Figure 14 “PCB Layout” on Page 25).

Figure 9

Filtering Scheme

Figure 10

Transmitter - Input Stage

Board Ground Plane

C1

22 µF

C3

100 nF

C2

100 nF

L1

1 µH

File: 3330

Data In P

internal P

internal N

Transmitter Module

Data In N

> 6 k

Ω

1.95 V

File: 3320