TDA2549 Просмотр технического описания (PDF) - Philips Electronics
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TDA2549 Datasheet PDF : 9 Pages
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Philips Semiconductors
I.F. amplifier and demodulator for
multistandard TV receivers
Product specification
TDA2549
PARAMETER
SYMBOL
A.F.C. output voltage swing
Change of frequency required for a.f.c.
output voltage swing of 10 V
A.F.C. switch off for a voltage lower than:
A.F.C. inverter switch
positive a.f.c. (Fig.2)
negative a.f.c. (Fig.3)
V15-3
∆f
V17-3
V16-3
V16-3
Tuner A.G.C.
Leakage current
Saturation voltage
I10 = 0,3 mA
take-over point LOW
take-over point HIGH
Signal expansion at Gv = 50 dB
Negative modulation (Fig.4)
white spot inverter threshold level
white spot insertion level
noise inverter threshold level
noise insertion level
Positive modulation a.g.c. detector
reference level
Auxiliary video input signal for Vo(p-p) = 2 V
Auxiliary video output
output signal (note 2)
top sync level
output impedance
Levels for video switches
positive video
negative video
internally demodulated signal
auxiliary video signal
I10
V10-3
Vi
Vi
∆V22-3
V22-3
V22-3
V22-3
V22-3
V11-3
V12-3
V14-3
V14-3
|Z14-3|
V2-3
V2-3
V23-3
V23-3
Notes to the characteristics
1. Signal – to – noise ratio S/N = V-----n--V-(--r--om----bs---)-l-a---c-a--k-t-----Bt--o--=----w---5--h---i-Mt--e---H----z-
2. Measured in application of Fig. 5.
MIN.
10
TYP.
−
MAX.
−
UNIT
V
−
70
200
kHz
−
−
1,5
V
0
−
1,5
V
4
−
12
V
−
−
15
µA
−
0,1
0,3
V
−
−
3
mV
10
−
−
mV
−
−
0,5
dB
−
4,6
−
V
−
3,2
−
V
−
0,9
−
V
−
2,5
−
V
3,0
3,2
3,4
V
0,7
1
1,4
V
−
1
−
V
1
2
3
V
−
7
−
Ω
−
−
1
V
3
−
−
V
−
−
1
V
3
−
−
V
April 1985
5
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