TDA9885 Philips Semiconductors, TDA9885 Datasheet - Page 6

• Manufacturer Part Number: TDA9885
• Description: I2C-bus controlled single and multistandard alignment-free IF-PLL demodulators
• Manufacturer: Philips Semiconductors

Philips Semiconductors
6. The intercarrier output signal at pin SIOMAD can be calculated by the following formula taking into account the
7. Pin REF is able to operate as a 1-pin crystal oscillator input as well as an external reference signal input, e.g. from
2003 Oct 02
I
alignment-free IF-PLL demodulators
2
internal video signal with 1.1 V (p-p) as a reference:
and
where:
in dB, 6 dB is the correction term of internal circuitry and 3 dB is the tolerance of video output and intercarrier output
V
the tuning system.
---------- -
2 2
C-bus controlled single and multistandard
V
o(intc)(rms)
1
o(intc)(rms)
r
is the correction term for RMS value,
=
----- -
20
1
.
=
1.1
V
------------- - dB
V
i(SC)
i(PC)
---------- -
2 2
1
+
10
6 dB 3 dB
r
V
V
--------------- dB
V
i SC
i PC
6
is the sound-to-picture carrier ratio at pins VIF1 and VIF2
TDA9885; TDA9886
Product specification