PEB2466 SIEMENS [Siemens Semiconductor Group], PEB2466 Datasheet - Page 81

• Manufacturer Part Number: PEB2466
• Description: Four Channel Codec Filter with PCM- and m-Controller Interface SICOFI4-mC
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

via the substrate of the chip, and the areas connected to different grounds are separated
on chip.
9.2
9
9.1
Keep in mind that inside the SICOFI-4- C all the different
Semiconductor Group
a) Separate all digital supply lines from analog supply lines as much as possible.
b) Use a separate GND-connection for the capacitor which is filtering the reference
c) Don’t use a common ground-plane under the SICOFI-4- C.
d) Use a large ground-plane (distant from the SICOFI-4- C) and use three single
a) To achieve a good filtering for the high frequency band, place SMD
b) One 100 nF SMD ceramic-capacitor is needed to filter the digital supply
c) Place all filter capacitors as close as possible to the SICOFI-4- C
d) Use one central Tantalum-capacitor with about 1 F to 10 F to block
voltage (220 nF ceramic-capacitor at
ground lines for connecting the SICOFI-4- C: one common analog ground, one
digital ground, and a third for the 220 nF capacitor connected to
ceramic-capacitors with 100 nF from
(
(most important!!!).
V
DDD
Guidelines for Board-Design
Board Layout Recommendation
Filter Capacitors
to GNDD).
V
V
81
DDA12
REF
).
,
V
DDA32
Guidelines for Board-Design
and
V
DD
V
-supplies are connected
DDREF
to GNDA.
V
REF
.
V
PEB 2466
DD
to GND.
02.97