Philips TDA8303, TDA8303A

July 1992 7

Philips Semiconductors Preliminary speciﬁcation

Small signal combination IC for black/white TV TDA8303

TDA8303A

CHARACTERISTICS

VP = 12 V;Tamb = 25°C; carrier 38.9 MHz negative modulation, unless otherwise speciﬁed

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply (pin 7)

VPsupply voltage range 9.5 12 13.2 V

IPsupply current no input 90 125 160 mA

I11 start current (pin 11) note 1 −6.5 9 mA

V11 start voltage horizontal oscillator 9.5 −−V

11 start protection level I11 = 12 mA −−16.5 V

IF Ampliﬁer (pins 8 and 9)

V8-9(RMS) input sensitivity (RMS value) at 38.9 MHz;

note 2 25 40 65 µV

V8-9(RMS) input sensitivity (RMS value) at 45.75 MHz;

notes 2 and 25 25 40 65 µV

R8-9 differential input resistance note 3 −1300 −Ω

8-9 differential input capacitance note 3 −5−pF

G8-9 gain control range −74 −dB

∆V17 output signal expansion for 46 dB input signal

variation note 4 −1−dB

V8-9 maximum input signal 100 170 −mV

Video Ampliﬁer (note5)

V17 zero signal output level note 6 −5.4 −V

V17 peak sync level 2.3 2.5 2.7 V

V17 video output signal amplitude note 7 2.3 2.65 3.0 V

V17 white spot threshold level −5.7 −V

V17 white spot insertion level −3.8 −V

Z17 video output impedance −25 −Ω

17 internal bias current of npn emitter follower

output transistor 1.4 1.8 −mA

Isource maximum source current (pin 17) 10 −−mA

B bandwidth of demodulated output signal 5 7 −MHz

G17 differential gain note 8 −48%

ϕdifferential phase note 8 −2 5 deg.

NL video non linearity note 9 −25%

intermodulation note 10

1.1 MHz; blue 50 60 −dB

1.1 MHz; yellow 50 60 −dB

3.3 MHz; blue 55 65 −dB

3.3 MHz; yellow 55 65 −dB