July 1992 3
Philips Semiconductors Preliminary specification
Small signal combination IC for black/white TV TDA8303TDA8303AQUICK REFERENCE DATA
Notes to the quick reference data
1. Pin 11 has a double function. When during switch-on a current of 9 mA is supplied to this pin, it is used to start the
horizontal oscillator. The main supply can then be obtained from the horizontal deflection stage. When no current is
supplied to this pin it can be used as a volume control.
2. On set AGC.
3. The output signal is measured at ∆f = 7.5 kHz and maximum volume control.
4. The minimum value is obtained by connecting a 1.8 kΩresistor and a 470 nF capacitor in series between the video
output and pin 25. The slicing level can be varied by changing the value of this resistor (higher resistance value
results in a larger value of the minimum sync pulse amplitude). The slicing level is independent of the video
information.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
VPpositive supply voltage (pin 7) 9.5 12 13.2 V
IPsupply current (pin 7) 90 125 160 mA
Istart start current (pin 11) note 1 −6.5 9 mA
Video
V8-9(RMS) IF sensitivity (RMS value) at 38.9 MHz;
note 2 20 40 65 µV
G8-9 IF gain control range −74 −dB
S/N signal-to-noise ratio input signal =
10 mV −57 −dB
V18(p-p) AFC output voltage swing
(peak-to-peak value) 10.5 −11.5 V
Sound
V12(RMS) AF output signal (RMS value) note 3 400 600 800 mV
AMS AM suppression at VI = 50 mV −58 −dB
THD total harmonic distortion −0.5 −%
Sync
V25 required sync pulse amplitude note 4 200 −−mV
I27 required input current during flyback pulse 0.1 −2mA
V
22 coincidence detector output voltage
in synchronized condition −9.7 −V
in no signal condition −1.5 −V
V22 vertical feedback for DC voltage 2.9 3.3 3.7 V
V22(p-p) vertical feedback for AC voltage
(peak-to-peak value) −1.2 −V