BCM4354 datasheet(140/192 Pages) CYPRESS

140 / 192 page

FM Receiver Specifications

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 139

Audio in-band ripple

100 Hz to 13 kHz,

Vin = 66 dBµV EMF (2 mV EMF)

∆f = 8 kHz, for 50 µs

–0.5

–

0.5

De-emphasis time

constant tolerance

With respect to 50 and 75 µs

–

±5

RSSI range

With 1 dB resolution and ± 5 dB

accuracy at room temp

3–

dBµV

EMF

1.41

–

14.1m

µV EMF

–3

–

dBuV

Stereo Decoder

Stereo channel separation Forced Stereo mode

Vin = 66 dBµV EMF (2 mV EMF),

∆f = 67.5 kHz, fmod = 1 kHz,

∆f Pilot = 6.75 kHz

R = 0, L = 1

–48

–

Mono stereo blend and

switching

Blending and switching is dynamically proportional to the FM wanted input signal C/

N. The blending and switching characteristics are fully programmable. Refer to

“Audio Features” on page 63 for further details.

Pilot suppression

Vin = 66 dBµV EMF (2 mV EMF),

∆f = 75 kHz, fmod = 1 kHz

–

Pause detection

Audio level at which a

pause is detected

Relative to 1 kHz tone, ∆f = 22.5 kHz

–

Four values in 3 dB steps

–21

–

–12

Audio pause duration

Four values

–

a. Following conditions are applied to all relevant tests unless otherwise indicated: Pre-emphasis and de-emphasis

of 50 us, R = L for mono, DAC Load ≥ 20 kΩ, BAF = 300 Hz to 15 kHz, and A-weighted filtering applied.

b. Contact Broadcom regarding applications that operate between 65 and 76 MHz.

c. Wanted Signal: ∆f = 22.5 kHz, and fmod = 1 kHz.

d. Interferer: ∆f = 22.5 kHz, and fmod = 1 kHz.

e. RDS sensitivity numbers are for 87.5–108 MHz only.

f. Vin = ∆f = 32 kHz, fmod = 1 kHz, ∆f Pilot = 7.5 kHz, and 95% of blocks decoded with no errors after correction.

g. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 22.5 kHz, fmod = 1 kHz, and ∆f Pilot = 6.75 kHz.

h. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 100 kHz, fmod = 1 kHz, and ∆f Pilot = 6.75 kHz.

i. Vin = 66 dBµV EMF (2 mV EMF), ∆f = 22.5 kHz, and fmod = 1 kHz.

Table 37: FM Receiver Specifications (Cont.)

Parameter

Conditionsa

Minimum

Typica

Maximum Units

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