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SI4824-DEMO Datasheet, PDF (6/20 Pages) List of Unclassifed Manufacturers – BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER
Si4820/24-A10
Table 4. FM Receiver Characteristics1,2
(VDD = 2.7 to 3.6 V, TA = 0 to 70 °C)
Parameter
Input Frequency
Sensitivity with Headphone
Network3
LNA Input Resistance4,5
LNA Input Capacitance4,5
AM Suppression4,5,6,7
Input IP34,8
Adjacent Channel Selectivity4
Alternate Channel Selectivity4
Audio Output Voltage5,6,7
Audio Mono S/N5,6,7,9,10
Audio Frequency Response Low
Symbol
fRF
Test Condition
(S+N)/N = 26 dB
m = 0.3
±200 kHz
±400 kHz
–3 dB
Min Typ Max Unit
64
—
109
MHz
—
4.0
—
µV EMF
—
4
—
k
—
5
—
pF
—
50
—
dB
—
105
— dBµV EMF
—
45
—
dB
—
60
—
dB
—
72
—
mVRMS
—
45
—
dB
—
—
30
Hz
Audio Frequency Response High
–3 dB
15
—
—
kHz
Audio THD6,5,11
Audio Output Load Resistance4,10
RL
Audio Output Load Capacitance4,10 CL
Powerup/Band Switch Time4
Single-ended
Single-ended
—
0.1
0.5
%
10
—
—
k
—
—
50
pF
—
—
110
ms
Notes:
1. Additional testing information is available in “AN569: Si4831/35/20/24-DEMO 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 “AN555: Si483x-B/Si4820/24 Antenna,
Schematic, Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified
customers.
3. Frequency is 64~109 MHz.
4. Guaranteed by characterization.
5. VEMF = 1 mV.
6. FMOD = 1 kHz, MONO, and L = R unless noted otherwise.
7. f = 22.5 kHz.
8. |f2 – f1| > 2 MHz, f0 = 2 x f1 – f2.
9. BAF = 300 Hz to 15 kHz, A-weighted.
10. At AOUT pin.
11. f = 75 kHz.
6
Rev. 1.0