TDA9887 Philips Semiconductors, TDA9887 Datasheet - Page 41

• Manufacturer Part Number: TDA9887
• Description: I2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2004 Aug 25
handbook, full pagewidth
I
IF-PLL demodulator with FM radio
(1) V
(2) V
(3) I
(4) I
(5) I
Pin number for TDA9887HN in parenthesis.
2
C-bus controlled multistandard alignment-free
TAGC
TAGC
TAGC
SAGC
SAGC
is tuner current in TV mode with R
is tuner current in TV mode with R
is tuner current in TV mode with R
TDA9887
is SIF-AGC voltage in FM mode.
is SIF-AGC voltage in AM mode.
V
P
(23)
21
I AFC
V SAGC
(V)
4
3
2
1
V
R1
22 k
R2
22 k
30
AFC
Fig.10 Typical SIF and tuner AGC characteristic.
Fig.11 Typical analog AFC characteristic for VIF.
TOP
TOP
TOP
(1)
40
V
(V)
AFC
= 22 k or setting via I
= 10 k or setting via I
= 0 k or setting via I
5
4
3
2
1
0
50
36
(2)
60
(3)
70
37
2
C-bus at +15 dB.
2
2
C-bus at 15 dB.
C-bus at 0 dB.
41
80
(4)
90
lock range without SAW filter
38
(5)
100
V i(SIF) (dB V)
AFC window
38.71 39.09
110
38.9
MHC149
120
600
500
400
300
200
100
I TAGC
0
( A)
40
f (MHz)
Product specification
41
TDA9887
mhc146
0
I
( A)
AFC
100
100
200
200