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Si4736/37/38/39-C40
Table 11. WB Receiver Characteristics 1
(V DD = 2.7 to 5.5 V, VIO = 1.85 to 3.6V, T A = 25 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Frequency
Sensitivity 2,3
Adjacent Channel Selectivity
Audio S/N 2,3,4,5
f R
SINAD = 12 dB
±25 kHz
Mono
162.4
—
—
—
—
0.9
52
45
162.55
—
—
—
MHz
μV EMF
dB
dB
Audio Frequency Response
Low 6
–3 dB
—
—
300
Hz
Audio Frequency Response High 6
–3 dB
3
—
—
kHz
Notes:
1. 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.
2. F MOD = 1 kHz.
3. ? f = 3 kHz.
4. V EMF = 1 mV.
5. A-weighted.
6. Guaranteed by characterization
Table 12. AM Receiver Characteristics 1,2
(V DD = 2.7 to 5.5 V, V IO = 1.85 to 3.6 V, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Frequency
Sensitivity 3,4,5,6
Large Signal Voltage
Handling 4,,6,7
Power Supply Rejection Ratio 6
Audio Output Voltage 3,4,8
f RF
(S+N)/N = 26 dB
THD < 8%
Δ V DD = 100 mV RMS , 100 Hz
520
—
—
—
54
—
25
300
40
60
1710
35
—
—
67
kHz
μV EMF
mV RMS
dB
mV RMS
Audio S/N
3,4,5,8
50
56
—
dB
Audio THD 3,4,8
—
0.1
0.5
%
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 = 520 kHz.
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, 30% modulation, 2 kHz channel filter.
4. Analog audio output mode.
5. B AF = 300 Hz to 15 kHz, A-weighted.
6. Guaranteed by characterization.
7. See “AN388: Si470x/1x/2x/3x/4x Evaluation Board Test Procedure” for evaluation method.
8. V IN = 5 mVrms.
9. Stray capacitance on antenna and board must be < 10 pF to achieve full tuning range at higher inductance levels.
Rev. 1.0
15
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