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SI4735-D60-EVB 数据手册 - Silicon Labs（芯科）
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SI4735-D60-EVB数据手册
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Si4730/31/34/35-D60
12 Rev. 1.2
Table 7. FM Receiver Characteristics
1,2
(V
A
= 2.7 to 5.5 V, V
D
= 1.62 to 3.6 V, T
A
= –20 to 85 °C)
Parameter Symbol Test Condition Min Typ Max Unit
Input Frequency f
RF
76 — 108 MHz
Sensitivity
3,4,5,6
(S+N)/N = 26 dB — 2.2 3.5 µV EMF
RDS Sensitivity
6,7
f = 2 kHz,
RDS BLER < 5%
—10—µV EMF
LNA Input Resistance
7,8
345 k
LNA Input Capacitance
7,8
456 pF
Input IP3
7,9
100 105 — dBµV EMF
AM Suppression
3,4,7,8
m = 0.3 40 50 — dB
Adjacent Channel Selectivity
±200 kHz 35 50 — dB
Alternate Channel Selectivity
±400 kHz 60 70 — dB
Spurious Response Rejection
7
In-band 35 — — dB
Audio Output Voltage
3,4,8
72 80 90 mV
RMS
Audio Output L/R Imbalance
3,8,10
—— 1 dB
Audio Frequency Response Low
7
–3 dB — — 30 Hz
Audio Frequency Response High
7
–3 dB 15 — — kHz
Audio Stereo Separation
8,10
35 42 — dB
Audio Mono S/N
3,4,5,8
55 63 — dB
Audio Stereo S/N
4,5,7,8
—58— dB
Audio THD
3,8,10
—0.10.5 %
De-emphasis Time Constant
7
FM_DEEMPHASIS = 2 70 75 80 µs
FM_DEEMPHASIS = 1 45 50 54 µs
Blocking Sensitivity
3,4,5,6,7,11,12
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. F
MOD
=1kHz, 75µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4. f = 22.5 kHz.
5. B
AF
= 300 Hz to 15 kHz, A-weighted.
6. Analog audio output mode.
7. Guaranteed by characterization.
8. V
EMF
=1 mV.
9. |f
2
– f
1
| > 2 MHz, f
0
=2xf
1
– f
2
. 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.
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