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TDA9808

Single standard VIF-PLL with QSS-IF and FM-PLL demodulator

Philips Electronics 

Philips Semiconductors

Single standard VIF-PLL with QSS-IF and

FM-PLL demodulator

Product specification

TDA9808

CHARACTERISTICS (5 V SUPPLY)

VP = 5 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

note 1

4.5

IP

supply current

71

Vision IF amplifier (pins 1 and 2)

Vi(rms)

VI(max)(rms)

Vi(VIF)(rms)

∆Vo(int)

allowable overload input

note 2

−

voltage (RMS value)

maximum input signal voltage +1 dB video at output; −

(RMS value)

see Fig.4

VIF input signal voltage

sensitivity (RMS value)

−1 dB video at output; −

see Fig.4

internal IF amplitude

within AGC range;

−

difference between picture M standard;

and sound carrier

∆f = 4.5 MHz

GIFcr

IF gain control range

see Fig.4

65

Ri(diff)

differential input resistance note 3

1.7

Ci(diff)

differential input capacitance note 3

1.2

VI(1,2)

DC input voltage

note 3

−

True synchronous video demodulator; note 4

fVCO(max)

maximum oscillator frequency f = 2fpc

125

for carrier regeneration

∆fosc/∆T

oscillator drift as a function of oscillator is

−

temperature

free-running; IAFC = 0;

note 5

∆fosc/∆VP

oscillator shift as a function of oscillator is

−

supply voltage

free-running; note 5

VVCO(rms)

oscillator voltage swing at

50

pins 14 and 15 (RMS value)

fcr(pc)

tacq

Vi(IF)(rms)

picture carrier capture range

±1.4

acquisition time

BL = 70 kHz; note 6

−

IF input signal voltage

maximum IF gain;

−

sensitivity for PLL to be locked note 7

(RMS value; pins 1 and 2)

5

83

−

−

60

0.7

70

2.2

1.7

3.4

130

−

−

80

±1.8

−

60

5.5

V

95

mA

440

mV

140

mV

100

µV

1

dB

−

dB

2.7

kΩ

2.5

pF

−

V

−

±20 × 10−6

MHz

K−1

±1500 × 10−6 V−1

110

mV

−

MHz

30

ms

90

µV

1999 Jun 04

11

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