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SI4730-D50 Arkusz danych(PDF) 11 Page - Silicon Laboratories

Numer części SI4730-D50
Szczegółowy opis  BROADCAST AM/FM RADIO RECEIVER
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Producent  SILABS [Silicon Laboratories]
Strona internetowa  http://www.silabs.com
Logo SILABS - Silicon Laboratories

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Si4730/31-D50
Rev. 1.0
11
Table 8. FM Receiver Characteristics1,2
(VA = 2.7 to 5.5 V, VD = 1.62 to 3.6 V, TA = –20 to 85 °C, 76–108 MHz)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Frequency
fRF
76
108
MHz
Sensitivity3,4,5
(S+N)/N = 26 dB
2.2
3.5
µV EMF
RDS Sensitivity6
f = 2 kHz,
RDS BLER < 5%
—11—
µV EMF
LNA Input Resistance6,7
34
5
k
LNA Input Capacitance6,7
45
6
pF
Input IP36,8
100
105
dBµV EMF
AM Suppression3,4,6,7
m = 0.3
40
50
dB
Adjacent Channel Selectivity
±200 kHz
35
50
dB
Alternate Channel Selectivity
±400 kHz
60
70
dB
Spurious Response Rejection6
In-band
35
dB
Audio Output Voltage3,4,7
72
80
90
mVRMS
Audio Output L/R Imbalance3,7,9
——
1
dB
Audio Frequency Response Low6
–3 dB
30
Hz
Audio Frequency Response High6
–3 dB
15
kHz
Audio Stereo Separation7,9
35
42
dB
Audio Mono S/N3,4,5,7
55
63
dB
Audio Stereo S/N4,5,6,7
—58—
dB
Audio THD3,7,9
—0.1
0.5
%
De-emphasis Time Constant6
FM_DEEMPHASIS = 2
70
75
80
µs
FM_DEEMPHASIS = 1
45
50
54
µs
Blocking Sensitivity3,4,5,6,12,13
f = ±400 kHz
34
dBµV
f = ±4 MHz
30
dBµV
Notes:
1.
Additional testing information is available in “AN388: Si470x/1x/2x/3x/4x Evaluation Board Test Procedure.”
Volume = maximum for all tests. Tested at RF = 98.1 MHz.
2.
To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic,
Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3.
FMOD =1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4.
f = 22.5 kHz.
5.
BAF = 300 Hz to 15 kHz, A-weighted.
6.
Guaranteed by characterization.
7.
VEMF =1 mV.
8.
|f2 – f1| > 2 MHz, f0 =2x f1 – f2. AGC is disabled.
9.
f = 75 kHz.
10.
At LOUT and ROUT pins.
11.
Analog audio output mode.
12.
Blocker Amplitude = 100 dBµV
13.
Sensitivity measured at (S+N)/N = 26 dB.
14.
At temperature (25°C).


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