BCM4330 Preliminary Data Sheet
FM Receiver Specifications
Table 32: FM Receiver Specifications (Cont.)
Conditions Minimum Typical Maximum Units
Parameter
Audio level at which a Relative to 1-kHz tone, 22.5 kHz deviation, –
–
–
–
pause is detected
50 µs deemphasis
4 values in 3 dB steps
Audio pause duration 4 values
–21
20
–
–
–12
40
dB
ms
Stereo Decoder
Stereo channel
separation
Forced Stereo mode
30
–
–
dB
dB
Input signal level 2 mV EMF
Δf = 67.5 kHz
Fmod = 1 kHz
R = 0, L= 1 including 9% pilot
Pilot suppression
Measured at audio outputs.
Δf = 75 kHz,
46
–
–
fmod = 1 kHz,
Deemphasis = 75 µs
a. Please contact Broadcom regarding applications that will operate between 65 and 76 MHz.
b. RDS sensitivity numbers are for 87.5–108 MHz only.
c. Best Tune algorithm is used during normal operation to avoid image interference.
Figure 42: FM Receiver Circuit
®
BROADCOM
BCM4330 Preliminary Data Sheet
April 28, 2011 • 4330-DS304-RI
Page 132
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