TDA9881HN NXP [NXP Semiconductors], TDA9881HN Datasheet - Page 26

• Manufacturer Part Number: TDA9881HN
• Description: Alignment-free vision and FM sound IF PLL demodulator for negative modulated TV standards
• Manufacturer: NXP [NXP Semiconductors]

Philips Semiconductors
9397 750 13417
Product data sheet
Fig 6. Typical VIF and tuner AGC characteristics.
Fig 7. Typical tuner takeover point as a function of
(dB V)
V
(1) V
(2) I
(3) I
(4) I
i(VIF)
110
100
90
80
70
60
resistor R
TAGC
TAGC
TAGC
0
VAGC
is tuner current in TV mode with R
is tuner current in TV mode with R
is tuner current in TV mode with R
is VIF AGC voltage and can be measured at pin VAGC.
4
TOP
.
8
12
V
16
VAGC
(V)
4
3
2
1
30
20
R
TOP
TOP
TOP
TOP
40
mhb159
Rev. 01 — 16 November 2004
(k )
= 22 k .
= 10 k .
= 0 k .
50
24
(1)
60
Alignment-free vision and FM sound IF PLL demodulator
70
(2)
80
Fig 8. Typical SIF AGC characteristic.
(3)
V
90
SAGC
(V)
100 110
V
5
4
3
2
1
i(VIF)
(4)
30
(dB V)
mhc116
120
50
600
500
400
300
200
100
0
I
TAGC
( A)
70
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
90
V
TDA9881
110
i(SIF)
001aab342
(dB V)
130
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