SI4730-D60-GUR Просмотр технического описания (PDF) - Silicon Laboratories
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SI4730-D60-GUR Datasheet PDF : 44 Pages
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Si4730/31/34/35-D60
Table 7. FM Receiver Characteristics1,2
(VA = 2.7 to 5.5 V, VD = 1.62 to 3.6 V, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
Sensitivity3,4,5,6
RDS Sensitivity6,7
LNA Input Resistance7,8
LNA Input Capacitance7,8
Input IP37,9
AM Suppression3,4,7,8
Adjacent Channel Selectivity
Alternate Channel Selectivity
Spurious Response Rejection7
Audio Output Voltage3,4,8
Audio Output L/R Imbalance3,8,10
Audio Frequency Response Low7
Audio Frequency Response High7
Audio Stereo Separation8,10
Audio Mono S/N3,4,5,8
Audio Stereo S/N4,5,7,8
Audio THD3,8,10
De-emphasis Time Constant7
fRF
76
—
108
MHz
(S+N)/N = 26 dB
—
2.2
3.5 µV EMF
f = 2 kHz,
RDS BLER < 5%
—
10
—
µV EMF
3
4
5
k
4
5
6
pF
100 105
— dBµV EMF
m = 0.3
40
50
—
dB
±200 kHz
35
50
—
dB
±400 kHz
60
70
—
dB
In-band
35
—
—
dB
72
80
90
mVRMS
—
—
1
dB
–3 dB
—
—
30
Hz
–3 dB
15
—
—
kHz
35
42
—
dB
55
63
—
dB
—
58
—
dB
—
0.1
0.5
%
FM_DEEMPHASIS = 2 70
75
80
µs
Blocking Sensitivity3,4,5,6,7,11, 12
FM_DEEMPHASIS = 1 45
50
54
f = ±400 kHz
—
34
—
µs
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. Analog audio output mode.
7. Guaranteed by characterization.
8. VEMF = 1 mV.
9. |f2 – f1| > 2 MHz, f0 = 2 x f1 – f2. AGC is disabled.
10. f = 75 kHz.
11. Sensitivity measured at (S+N)/N = 26 dB.
12. Blocker Amplitude = 100 dBuV.
13. At temperature (25 °C).
14. At LOUT and ROUT pins.
Rev. 1.1
13
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