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TDA8303A Folha de dados(PDF) 11 Page - NXP Semiconductors

Nome de Peças TDA8303A
Descrição Electrónicos  Small signal combination IC for black/white TV
Download  21 Pages
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Fabricante Electrônico  PHILIPS [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA8303A Folha de dados(HTML) 11 Page - NXP Semiconductors

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July 1992
11
Philips Semiconductors
Preliminary specification
Small signal combination IC for black/white TV
TDA8303
TDA8303A
Notes to the characteristics
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 input impedance has been chosen such that a SAW filter can be employed.
4. Measured with 0 dB = 450
µV.
5. Measured at 10 mV RMS top sync input signal.
6. Projected zero point; i.e. with switched demodulator.
7. White 10% of the top sync amplitude.
8. Measured according to the test line illustrated by Fig.2. The differential gain is expressed as a percentage of the
difference in peak amplitudes between the largest and smallest value relative to the subcarrier amplitude at blanking
level. The differential phase is defined as the difference in degrees between the largest and smallest phase angle.
The differential gain and phase are measured with a DSB signal.
9. This figure is valid for the complete video signal amplitude (peak white-to-black); see Fig.3. The non
−linearity is
expressed as a percentage of the maximum deviation of a luminance step from the mean step, with respect to the
mean step.
10. The test set
−up and input conditions are illustrated by Fig.4. The figures are measured at an input signal of 10 mV
RMS.
11. Measured with a source impedance of 75
Ω.
12. The sound circuit is measured (unless otherwise specified) with an input signal of V15 of 50 mV RMS, a carrier
frequency of 5.5 MHz at a
∆f of 27.5 kHz. The QL of the demodulator tuned circuit is 16 and the volume control is
Vertical circuit (note 24)
VERTICAL RAMP GENERATOR
I2
input current during scan
−−
2
µA
I2
discharge current during retrace
0.8
mA
V2(p−p)
sawtooth amplitude (peak-to-peak value)
1.9
V
t
interlace timing of the internal pulses
30
32
34
µs
VERTICAL OUTPUT
I3
available output current
V3 = 4 V
−−
3mA
V3
maximum available output voltage
I3 = 0.1 mA
4.4
5
V
VERTICAL FEEDBACK INPUT
V4
DC input voltage
2.9
3.3
3.7
V
V4(p−p)
AC input voltage (peak-to-peak value)
1
V
I4
input current
−−
12
µA
∆t
p
internal pre-correction to sawtooth
3
%
deviation amplitude
50/60 Hz
−−
4%
temperature dependency of the amplitude
Tamb = 20 to
65
°C
−−
2%
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
The signal-to-noise ratio = 20
V
O black-to-white
V
nRMS
() atB=5MHz
-----------------------------------------------------------
log


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