CYW4343X
Table 41. FM Receiver Specifications (Cont.)
Parameter
Conditionsa
General Audio
Minimum Typical Maximum
Units
Audio output levelg
–
–
–14.5
–
–
–
–12.5
0
dBFS
dBFS
Maximum audio output
levelh
DAC audio output level
Conditions:
72
–
88
mV RMS
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 22.5 kHz, fmod = 1 kHz,
∆f Pilot = 6.75 kHz
Maximum DAC audio output –
levelh
–
333
–
–
1
mV RMS
dB
Audio DAC output level
differencei
–
–1
Left and right AC mute
Left and right hard mute
FM input signal fully muted with DAC enabled
FM input signal fully muted with DAC disabled
60
80
–
–
–
–
dB
dB
Soft mute attenuation and Muting is performed dynamically, proportional to the desired FM input signal C/N. The muting characteristic
start level
is fully programmable. See Audio Features on page 57.
Maximum signal plus noise- –
to-noise ratio
–
–
69
64
–
–
dB
dB
(S + N)/N, monoi
Maximum signal plus noise- –
to-noise ratio (S + N)/N,
stereog
Total harmonic distortion,
mono
Vin = 66 dBµV EMF(2 mV EMF):
∆f = 75 kHz, fmod = 400 Hz.
∆f = 75 kHz, fmod = 1 kHz.
–
–
–
–
–
–
–
–
0.8
0.8
%
%
∆f = 75 kHz, fmod = 3 kHz.
∆f = 100 kHz, fmod = 1 kHz.
–
–
0.8
%
–
–
–
–
1.0
1.5
%
%
Total harmonic distortion,
stereo
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 67.5 kHz, fmod = 1 kHz,
ꢀf pilot = 6.75 kHz, L = R
Audio spurious productsi
Range from 300 Hz to 15 kHz
with respect to a 1 kHz tone.
–
–
–
–
–
–60
–
dBc
kHz
Hz
Audio bandwidth, upper (– Vin = 66 dBµV EMF (2 mV EMF)
15
–
3 dB point)
∆f = 8 kHz, for 50 µs
Audio bandwidth, lower (–
3 dB point)
20
0.5
Audio in-band ripple
100 Hz to 13 kHz,
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 8 kHz, for 50 µs.
–0.5
dB
Deemphasis time constant With respect to 50 and 75 µs.
tolerance
–
3
–
–
±5
83
%
RSSI range
With 1 dB resolution and ±5 dB accuracy
at room temperature.
dBµV EMF
1.41
–3
–
–
1.41E+4
77
µV EMF
dBµV
Stereo Decoder
Stereo channel separation Forced Stereo mode
Vin = 66 dBµV EMF (2 mV EMF),
–
44
–
dB
∆f = 67.5 kHz, fmod = 1 kHz,
ꢀf Pilot = 6.75 kHz,
R = 0, L = 1
Document No. 002-14797 Rev. *H
Page 105 of 128
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