U4280BM Datasheet, PDF (7/9 Pages) TEMIC Semiconductors – AM / FM - PLL

Application Circuit
U4280BM
V_DD
R₅
4.7 k Ω
LD Test out
C₇
R₄
100 nF
1.5 k Ω
C₄ ^{4 MHz} C₅
C₆
R₈
82 pF _{180 k Ω}
AM input
C₈
2.2 nF
R₆
15 k Ω 30 V
V_tune
C₂
100 nF
C₁
1 µF
22 pF
22 pF
20
19
18
17
16
15
14
13
12
11
U4280BM
FM–Tuner
VCO
FM
1
2
3
4
5
6
7
8
9
10 _C3
R₁
R₂
3.9 k Ω
1 nF
750 Ω
R₃
I²C – Master –Transmitter
300 Ω _LED
13348
Figure 7. Application circuit
TELEFUNKEN Semiconductors
7 (9)
Rev. A1, 10-Apr-97
Preliminary Information