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SI4704-D60-GUR Datasheet, PDF (14/39 Pages) Silicon Laboratories – BROADCAST FM RADIO RECEIVER WITH RDS/RBDS | |||
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Si4704/05-D60
Table 8. 64â75.9 MHz Input Frequency FM Receiver Characteristics1,2,3
(VA = 2.7 to 5.5 V, VD = 1.62 to 3.6 V, TA = â20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
Sensitivity4,5,6,8
LNA Input Resistance3,7
LNA Input Capacitance3,7
Input IP39
fRF
64
â
75.9
MHz
(S+N)/N = 26 dB
â
3.5
â
µV EMF
3
4
5
kï
4
5
6
pF
â
105
â dBµV EMF
AM Suppression3,4,5,7
m = 0.3
â
50
â
dB
Adjacent Channel Selectivity
±200 kHz
â
50
â
dB
Alternate Channel Selectivity
Audio Output Voltage4,5,7
Audio Output L/R Imbalance4,7,10
Audio Frequency Response Low3
Audio Frequency Response High3
Audio Mono S/N4,3,5,7
Audio THD4,7,10
De-emphasis Time Constant3
±400 kHz
â
70
â
dB
72
80
90
mVRMS
â
â
1
dB
â3 dB
â
â
30
Hz
â3 dB
15
â
â
kHz
â
63
â
dB
â
0.1
â
%
FM_DEEMPHASIS = 2 70
75
80
µs
FM_DEEMPHASIS = 1 45
50
54
µs
Audio Output Load Resistance3,11
RL
Single-ended
10
Audio Output Load Capacitance3,11
CL
Single-ended
â
Seek/Tune Time3
RCLK tolerance
â
= 100 ppm
Powerup Time3
From powerdown
â
RSSI Offset12
Input levels of 8 and
â3
60 dBµV EMF
â
â
kï
â
50
pF
â
60 ms/channel
â
110
ms
â
3
dB
Notes:
1. Additional testing information is available in âAN388: Si470x/1x/2x/3x/4x Evaluation Board Test Procedure.â
Volume = maximum for all tests. Tested at RF = 98.1 MHz.
2. To ensure proper operation and receiver performance, follow the guidelines in âAN383: Si47xx Antenna, Schematic,
Layout, and Design Guidelines.â Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3. Guaranteed by characterization.
4. FMOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
5. ïf = 22.5 kHz.
6. BAF = 300 Hz to 15 kHz, A-weighted.
7. VEMF = 1 mV.
8. Analog output mode.
9. |f2 â f1| > 2 MHz, f0 = 2 x f1 â f2. AGC is disabled.
10. ïf = 75 kHz.
11. At LOUT and ROUT pins.
12. At temperature (25 °C).
14
Rev. 1.2
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