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Philips Semiconductors
User Manual of High-End RDS/EON
Car Radio System CCR612 (V0.3)
Application Note
96029
FM characteristics
V
supply
= 14.4 V, T
amb
=25°C, f
o
= 98 MHz, f
dev
= ±22.5 kHz, f
mod
= 1 kHz unless otherwise specified. Dummy
aerial as shown in Figure 2.
55
1204.3
50
Signal generator
Radio aerial
input (150 Ohm)
Vin
Figure 2 Dummy aerial to test the FM mode
Aerial input voltage (Vin), for -3 dB limiting (adjustable) 3 - 20 µV
for (S+N)/N = 26 dB 2.7 µV
for 10 dB crosstalk (stereo) 70 µV
Signal-to-noise ratio over most of the signal range 64 dB
RF signal handling capability for THD < 2% at 75kHz dev. > 2 V
MPX output (RMS value) at pin 47 of the TEA6822 200 mV
AM suppression over most of the signal range > 55 dB
Total Harmonic Distortion over most of the signal range. 75 kHz dev. 0.5 % (typ.)
Adjacent signal selectivity (two signal method) S
200
>45 dB
IF suppression: IF1 (72.2 MHz) > 70 dB
IF2 (10.7 MHz) > 90 dB
Search sensitivity (adjustable) Vin > 4 µV
RDS sensitivity: Traffic Announcement Vin > 12 µV
Programme Identification Vin > 15 µV
IF counter resolution 6.25 kHz
Frequency grid (Europe): Search Tuning 100 kHz
Manual Tuning 50 kHz
Repetitive Manual tuning (after .5s) 100 kHz
Frequency grid (USA): Search Tuning 200 kHz
Manual Tuning 100 kHz
Repetitive Manual tuning (after .5s) 200 kHz
20