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SI4730-D50 Datasheet, PDF (12/34 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER | |||
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Si4730/31-D50
Table 8. FM Receiver Characteristics1,2 (Continued)
(VA = 2.7 to 5.5 V, VD = 1.62 to 3.6 V, TA = â20 to 85 °C, 76â108 MHz)
Parameter
Intermod Sensitivity3,4,5,6,12,13
Symbol
Test Condition
Min Typ Max
Unit
ïf = ±400 kHz, ±800 kHz â
40
â
dBµV
ïf = ±4 MHz, ±8 MHz
â
35
â
dBµV
Audio Output Load Resistance6,10
RL
Audio Output Load Capacitance6,10
CL
Seek/Tune Time6
Single-ended
Single-ended
RCLK tolerance
= 100 ppm
10
â
â
kï
â
â
50
pF
â
â
60 ms/channel
Powerup Time6
RSSI Offset14
From powerdown
â
â
110
ms
Input levels of 8 and
â3
â
3
dB
60 dBµV at RF Input
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. FMOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4. ïf = 22.5 kHz.
5. BAF = 300 Hz to 15 kHz, A-weighted.
6. Guaranteed by characterization.
7. VEMF = 1 mV.
8. |f2 â f1| > 2 MHz, f0 = 2 x f1 â f2. AGC is disabled.
9. ïf = 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).
12
Rev. 1.0
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