TDA9887 Philips Semiconductors, TDA9887 Datasheet - Page 6

• Manufacturer Part Number: TDA9887
• Description: I2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio
• 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
2004 Aug 25
I
IF-PLL demodulator with FM radio
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 multistandard alignment-free
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
Product specification
TDA9887