PRELIMINARY
CYW43438
Table 35. FM Receiver Specifications (Cont.)
Parameter
Conditions1
Minimum Typical Maximum
Units
General Audio
Audio output level7
–
–14.5
–
–
–
–12.5
0
dBFS
dBFS
Maximum audio output
level8
–
Conditions:
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 22.5 kHz, fmod = 1 kHz,
∆f Pilot = 6.75 kHz
DAC audio output level
72
–
88
mV RMS
Maximum DAC audio
output level8
–
–
–
333
–
–
1
mV RMS
dB
Audio DAC output level
difference9
–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 charac-
start level
teristic is fully programmable. See “Audio Features” .
Maximum signal plus
noise-to-noise ratio
(S + N)/N, mono9
–
–
–
69
64
–
–
dB
dB
Maximum signal plus
noise-to-noise ratio
(S + N)/N, stereo7
–
Vin = 66 dBµV EMF(2 mV EMF):
∆f = 75 kHz, fmod = 400 Hz.
∆f = 75 kHz, fmod = 1 kHz.
∆f = 75 kHz, fmod = 3 kHz.
∆f = 100 kHz, fmod = 1 kHz.
–
–
–
–
–
–
–
–
–
–
–
–
0.8
0.8
0.8
1.0
%
%
%
%
Total harmonic distortion,
mono
Vin = 66 dBµV EMF (2 mV EMF),
∆f = 67.5 kHz, fmod = 1 kHz,
ꢀf pilot = 6.75 kHz, L = R
Total harmonic distortion,
stereo
–
–
1.5
%
Range from 300 Hz to 15 kHz
with respect to a 1 kHz tone.
Audio spurious products9
–
15
–
–
–
–
–60
–
dBc
kHz
Hz
Audio bandwidth, upper (–
3 dB point)
Vin = 66 dBµV EMF (2 mV EMF)
∆f = 8 kHz, for 50 µs
Audio bandwidth, lower (–
3 dB point)
20
100 Hz to 13 kHz,
Vin = 66 dBµV EMF (2 mV EMF),
Audio in-band ripple
–0.5
–
0.5
dB
∆f = 8 kHz, for 50 µs.
Deemphasis time constant
tolerance
With respect to 50 and 75 µs.
–
3
–
–
±5
83
%
dBµV EMF
With 1 dB resolution and ±5 dB accuracy
at room temperature.
RSSI range
1.41
–3
–
–
1.41E+4
77
µV EMF
dBμV
Document Number: 002-14796 Rev. *K
Page 82 of 101
CYPRESS [ CYPRESS ]
