Philips Semiconductors
Preliminary specification
VIF-PLL demodulator and FM-PLL detector
TDA9800
• AGC output voltage for tuner; adjustable take-over point
FEATURES
(TOP)
• Suitable for negative vision modulation
• AFC detector without extra reference circuit
• Applicable for IF frequencies of 38.9 MHz, 45.75 MHz
and 58.75 MHz
• Alignment-free FM-PLL detector with high linearity
• Stabilizer circuit for ripple rejection and to achieve
constant output signals
• Gain controlled wide band VIF amplifier (AC coupled)
• True synchronous demodulation with active carrier
regeneration (ultra-linear demodulation, good
intermodulation figures, reduced harmonics and
excellent pulse response)
• 5 to 8 V positive supply voltage range, low power
consumption (300 mW at +5 V supply voltage).
• Peak sync AGC for negative modulation
GENERAL DESCRIPTION
• Video amplifier to match sound trap and sound filter
The TDA9800 is a monolithic integrated circuit for vision
and sound IF signal processing in TV and VTR sets.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
positive supply voltage (pin 20)
MIN. TYP. MAX. UNIT
VP
IP
4.5
51
−
5
8.8
69
90
−
V
supply current
60
50
150
70
2.0
8
mA
µV
mV
dB
V
Vi IF
vision IF input signal sensitivity (RMS value, pins 1 and 2)
maximum vision IF input signal (RMS value, pins 1 and 2)
IF gain control
70
64
1.7
6
Gv
73
2.3
−
Vo CVBS
B
CVBS output signal on pin 7 (peak-to-peak value)
−3 dB video bandwidth on pin 7
MHz
dB
dB
dB
dB
V
S/N (W)
α0.92/1.1
α2.76/3.3
αH
signal-to-noise ratio weighted; for video
intermodulation attenuation
56
56
56
35
0.8
−20
59
62
62
40
−
−
−
−
suppression of harmonics in video signal
maximum AF output signal for THD < 1.5% (RMS value, pin 9)
operating ambient temperature
−
Vo AF
Tamb
−
−
+70
°C
ORDERING INFORMATION
PACKAGE
MATERIAL
EXTENDED TYPE
NUMBER
PINS
PIN POSITION
CODE
TDA9800
20
20
DIL
plastic
plastic
SOT146(1)
SOT163A(2)
TDA9800T
mini-pack
Note
1. SOT146-1; 1996 December 6.
2. SOT163-1; 1996 December 6.
July 1994
2
NXP [ NXP ]
