TDA9881 Philips Semiconductors, TDA9881 Datasheet - Page 34

• Manufacturer Part Number: TDA9881
• Description: Alignment-free vision and FM sound IF PLL demodulator
• Manufacturer: Philips Semiconductors

Fig 21. Test circuit.
input
input
SIF
VIF
(1) Different VIF loop filter in comparison with the application circuit due to different input characteristics (SAW filter or transformer).
(2) Internal connected; the pin must be left open-circuit.
(3) AF output signal reduction; see
51
51
Pin numbers for TDA9881HN in parenthesis.
xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x
1 : 1
1 : 1
(27)
(30)
24
1
SIF2
VIF1
(26)
(31)
23
2
Table note 19
SIF1
VIF2
(24)
22
(1)
3
i.c.
VAGC
k
of
22
(2)
5.6 k
10 nF
Section
FM PLL
output
AFC
(23)
filter
(2)
21
4
AFC
FMPLL
11.
22 k
100
nF
390
pF
(22)
(3)
V
20
5
P
V
DEEM
10 nF
P
1.5
nF
VIF PLL
filter
(21)
19
(4)
6
TDA9881
AFD
(1)
VPLL
150
R x (3)
220 nF
470 nF
(20)
18
(5)
7
DGND
AGND
FM sound
output
output
CVBS
(18)
17
(7)
8
FMSO
CVBS
22 k
n.c.
V
or
P
(17)
16
(8)
9
AMUTE0
TOP
1 nF
100
reference
pF
external
n.c.
V
or
(16)
P
15
(9)
10
REF
FM1
C x
4 MHz
tuner AGC
n.c.
V
or
output
P
(15)
(10)
14
11
FM0
TAGC
QSS output
reference
n.c.
V
or
single
P
(14)
(11)
13
12
VIF0
QSSO
n.c.
mhc505
2.2 k
VIF1