TDA9808 Просмотр технического описания (PDF) - Philips Electronics
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TDA9808 Datasheet PDF : 36 Pages
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Philips Semiconductors
Single standard VIF-PLL with QSS-IF and
FM-PLL demodulator
Product specification
TDA9808
CHARACTERISTICS (9 V SUPPLY, TDA9808; DIP20 only)
VP = 9 V; Tamb = 25 °C; see Table 1 for input frequencies and carrier ratios; input level Vi(VIF)(rms) = 10 mV
(pins 1 and 2) (sync-level); Vi(SIF)(rms) = 4.5 mV (pins 19 and 20) (sound carrier); IF input from 50 Ω via broadband
transformer 1 : 1; video modulation DSB; residual carrier: 10%; video signal in accordance with “NTC-7 Composite”;
measurements taken in Fig.13; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supply (pin 18)
VP
supply voltage
IP
supply current
note 1
4.5
5.0
9.9
V
72
85
98
mA
True synchronous video demodulator; note 2
Vi(VIF)(rms)
VIF input signal voltage
sensitivity (RMS value)
PLL still locked;
−
maximum IF gain; note 3
60
90
µV
Composite video amplifier (pin 9; sound carrier off)
Vo(video)(p-p) video output signal voltage
(peak-to-peak value)
see Fig.8
1.27
1.45
1.63
V
S/NW(video) weighted signal-to-noise ratio see Fig.6 and note 4
56
60
−
dB
PSRR
power supply ripple rejection see Fig.11
25
30
−
dB
at pin 9
Tuner AGC (pin 12)
∆GIF
IF slip by automatic gain
tuner gain current from −
6
8
dB
control
20 to 80%
AFC circuit (pin 13); see Fig.10 and note 5
S
control steepness ∆I13/∆f
∆fIF/∆T
frequency variation by
temperature
note 6
fpc = 38.9 MHz
fpc = 45.75 MHz
fpc = 58.75 MHz
IAFC = 0; note 7
0.35
0.35
0.35
−
0.55
0.75
µA/kHz
0.55
0.75
µA/kHz
0.55
0.75
µA/kHz
−
±20 × 10−6 K−1
FM-PLL sound demodulator and AF output (pin 6); note 8
Vo(AF)(6)(rms) AF output signal voltage
(RMS value)
±25 kHz
375
(50% FM deviation);
see Fig.13
S/NW(audio) weighted signal-to-noise ratio “CCIR 468-4”;
55
see Fig.13
α6
mute attenuation
70
∆V5
DC jump voltage of AF output FM-PLL in lock mode −
terminal
500
625
mV
60
−
dB
75
−
dB
±50
±175
mV
1999 Jun 04
9
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