TDA8822M Philips Semiconductors, TDA8822M Datasheet - Page 17

• Manufacturer Part Number: TDA8822M
• Description: Universal I2C-bus programmable RF modulator
• Manufacturer: Philips Semiconductors

Philips Semiconductors
6. Measured with no pre-emphasis on the audio input and no de-emphasis in the receiver. Measurement is done for
7. The accuracy only depends on the accuracy of the reference frequency (accuracy of the crystal). Notice that the
8. Except for the harmonics of the RF oscillator frequency and for the combinations between the RF oscillator
9. Chroma beat
10. NICAM beat
11. NICAM eye height and Bit Error Rate measurement conditions:
1997 Jan 08
Universal I
modulator
frequencies between 50 Hz and 15 kHz, reference is the level measured at 1 kHz.
value of the capacitor in series with the crystal must be chosen to be as close as possible to the load capacitance of
the crystal.
frequency and the sound oscillator frequency (f
the
a) For PAL: measured applying a 4.43 MHz sine wave of 200 mV (p-p) at the video input. Measurement is the
b) For NTSC: measured applying a 3.58 MHz sine wave of 200 mV (p-p) at the video input. Measurement is the
a) For PAL B/G: measured applying a sine wave of 150 mV (p-p) at 5.85 MHz on the NICAM input. Measurement
b) For PAL I: measured applying a sine wave of 150 mV (p-p) at 6.552 MHz on the NICAM input. Measurement is
a) A NICAM frame is applied from a Textronix 728E in B/G mode on the NICAM input of the TDA8822 through an
b) The RF carrier is demodulated with a Rohde & Schwartz EMFP demodulator for PAL B/G, the sound trap filter is
difference between the level of the unmodulated picture carrier and the level of the spike appearing at the
frequency of the picture carrier plus 1.07 MHz for PAL B/G, 1.57 MHz for PAL I and 2.07 MHz for PAL D/K.
difference between the level of the unmodulated picture carrier and the level of the spike appearing at the
frequency of the picture carrier plus 920 kHz.
is the difference between the level of the unmodulated picture carrier and the level of the spike appearing at the
frequency of the picture carrier plus 350 kHz or 5.15 MHz.
the difference between the level of the unmodulated picture carrier and the level of the spike appearing at the
frequency of the picture carrier plus 552 kHz or 5.448 MHz.
attenuator to get 150 mV (p-p). The sound subcarrier is set to 5.5 MHz (SC = 1) and the picture to sound ratio is
set to -12 dB (PS = 1). There is no video signal applied to the video input and no audio signal on the audio input.
set off, and the video signal is fed to a Textronix 728D NICAM demodulator for B/G. Measurements of the eye
height and bit error rate are done on the 728D.
1
4
f
RF
,
1
2
f
RF
2
and
C-bus programmable RF
3
4
f
RF.
RF
+ 2f
s
17
, 2f
RF
+ f
s
, etc.). This measurement includes the spurious at
Preliminary specification
TDA8822