Anybus CompactCom M40 User Manual

Appendix A: Implementation Examples 50 (114)
A.8.2 Bypass Capacitance
The power supply inputs must have adequate bypass capacitance for high-frequency noise
suppression. It is therefore recommended to add extra bulk capacitors near the power supply
inputs:
Reference
Value (Ceramic)
C1 22 µF / 6.3 V
C2 100 nF / 16 V
An example is shown in the picture below.
3V3
GND
C2C1
3.3 V
GND
Fig. 27
A.8.3 3.3 V Regulation
The following example uses the LT1767 from Linear Technology to provide a stable 3.3 V power
source for the module. Note that all capacitors in this example are of ceramic type.
5V
SS14
BAV70
22uF
(6.3V)
4k7
LT1767
10uH
100nF
(16V)
100nF
(16V)
1,5nF
(50V)
10uF
(6.3V)
Vin
FB
Vsw
GND
Vc
SHDN
SYNC
BOOST
VDD (3.3V)
GND
C1
C2
Fig. 28
For detailed information regarding this example, consult the data sheet for the LT1767 (Linear
Technology).
Anybus
®
CompactCom
™
M40 Hardware Design Guide HMSI-216-126 EN 2.6

Anybus CompactCom M40 Specifications

General

Brand	Anybus
Model	CompactCom M40
Category	Conference System
Language	English