TDA9800T View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA9800T Datasheet PDF : 23 Pages
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Philips Semiconductors
VIF-PLL demodulator and FM-PLL detector
Preliminary specification
TDA9800
CHARACTERISTICS
The following characteristics apply for VP = 5 V; Tamb = +25 °C; see Table 1 for input frequencies and picture to sound
ratios; VilF = 10 mV RMS value (sync level); video modulation DSB; residual carrier: 10%; video signal in accordance
with CCIR line 17 or NTC-7 Composite; measurements taken in Fig.3 unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN.
VP
supply voltage (pin 20)
note 1
4.5
IP
supply current
51
Vision IF input (pins 1 and 2)
Vi
input sensitivity (RMS value) at
−1 dB video at output −
38.9 MHz and 45.75 MHz
input sensitivity (RMS value) at
−
58.75 MHz
maximum input signal (RMS value) at +1 dB video at output 70
38.9 MHz and 45.75 MHz
maximum input signal (RMS value) at
80
58.75 MHz
∆Vo int. internal IF amplitude difference
within AGC range;
−
between picture and sound carrier B/G: ∆f = 5.5 MHz;
M/N: ∆f = 4.5 MHz
GIF
IF gain control
see Fig.4
38.9 MHz and
64
45.75 MHz
58.75 MHz
62
B
−3 dB IF bandwidth
Ri
input resistance (differential)
Ci
input capacitance (differential)
V1, 2
DC input voltage
True synchronous video demodulator
upper cut-off frequency 70
1.7
1.2
3.0
note 2
fVCO
maximum oscillator frequency for
f = 2fPC
125
carrier regeneration
∆fVCO
oscillator drift (free running) as a
IAFC = 0; note 3
−
function of temperature
Vo ref
oscillator swing at pins 16 and 17
fPC = 38.9 MHz
−
(RMS value)
fPC = 45.75 MHz
−
fPC = 58.75 MHz
−
∆fPC
vision carrier capture range
1.5
(negative)
vision carrier capture range (positive)
1.5
tacqu
acquisition time
BL = 60 kHz; note 4 −
TYP.
5
60
50
60
150
160
0.7
70
68
100
2.2
1.7
3.4
130
−
120
100
80
2
2
−
MAX.
8.8
69
UNIT
V
mA
90
µV
100
µV
−
mV
−
mV
1
dB
−
dB
−
dB
−
MHz
2.7
kΩ
2.5
pF
3.8
V
−
MHz
±20
ppm/K
−
mV
−
mV
−
mV
−
MHz
−
MHz
30
ms
July 1994
7
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