U4285BM-AFS TEMIC Semiconductors, U4285BM-AFS Datasheet - Page 8

• Manufacturer Part Number: U4285BM-AFS
• Description: AM / FM - PLL
• Manufacturer: TEMIC Semiconductors

Recommendations for Applications
D
D
PCB-Layout
U4285BM
8 (10)
(Pin 20 – digital ground) must be connected according
V
GND
C
Pin 20 (GND 1)
GND 2 (Pin 10 – analogue ground) and GND 1
to figure 8
DD
3
= 100 nF should be very close to Pin 1 (V
C
4
C
3
20
1
19
2
18
DD
3
) and
Figure 8.
17
4
D
D
C
4 MHz crystal must be very close to Pin 18 and Pin 19
Components of the charge pump (C
2
respect to Pin 13.
/R
16
2
5
for FM) should be very close to Pin 14 with
15
6
C
TELEFUNKEN Semiconductors
1
14
7
13
8
Rev. A3, 14-May-97
C
2
1
/R
12
9
1
for AM and
11
10
95 10124