PRELIMINARY
CYW43438
Table 35. FM Receiver Specifications (Cont.)
Parameter
Conditions1
Minimum Typical Maximum
Units
Stereo Decoder
Forced Stereo mode
Vin = 66 dBµV EMF (2 mV EMF),
Stereo channel separation ∆f = 67.5 kHz, fmod = 1 kHz,
ꢀf Pilot = 6.75 kHz,
–
44
–
dB
R = 0, L = 1
Mono stereo blend and
switching
Dynamically proportional to the desired FM input signal C/N. The blending and switching characteristics
are fully programmable. See “Audio Features” .
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 75 kHz, fmod = 1 kHz.
Pilot suppression
46
–
–
dB
Pause Detection
Relative to 1-kHz tone, ∆f = 22.5 kHz.
–
–
–
–
–
Audio level at which
a pause is detected
4 values in 3 dB steps
–21
–12
dB
Audio pause
duration
4 values
20
–
40
ms
1. The following conditions are applied to all relevant tests unless otherwise indicated: Preemphasis and deemphasis of 50 μs, R = L for mono,
BAF = 300 Hz to 15 kHz, A-weighted filtering applied.
2. Contact your Broadcom representative for applications operating between 65–76 MHz.
3. Signal of interest: ∆f = 22.5 kHz, fmod = 1 kHz.
4. Interferer: ∆f = 22.5 kHz, fmod = 1 kHz.
5. RDS sensitivity numbers are for 87.5–108 MHz only.
6. Vin = ∆f = 32 kHz, fmod = 1 kHz, ∆f pilot = 7.5 kHz, and with an interferer for 95% of blocks decoded with no errors after correction, over
a sample of 5000 blocks.
7. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 22.5 kHz, fmod = 1 kHz, ∆f pilot = 6.75 kHz.
8. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 100 kHz, fmod = 1 kHz, ∆f pilot = 6.75 kHz.
9. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 22.5 kHz, fmod = 1 kHz.
Document Number: 002-14796 Rev. *K
Page 83 of 101
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