SI4736-C40 Datasheet, PDF (15/42 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER

Si4736/37/38/39-C40
Table 11. WB Receiver Characteristics¹
(V_DD = 2.7 to 5.5 V, VIO = 1.85 to 3.6V, T_A = 25 °C)
Parameter
Input Frequency
Symbol
f_R
Test Condition
Min Typ Max Unit
162.4
—
162.55 MHz
Sensitivity^2,3
Adjacent Channel Selectivity
Audio S/N^2,3,4,5
Audio Frequency Response Low⁶
Audio Frequency Response High⁶
SINAD = 12 dB
±25 kHz
Mono
–3 dB
–3 dB
—
0.9
— µV EMF
—
52
—
dB
—
45
—
dB
—
—
300
Hz
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
f_RF
520 — 1710
kHz
(S+N)/N = 26 dB
—
25
35
µV EMF
Large Signal Voltage Han-
dling^4,,6,7
Power Supply Rejection Ratio⁶
Audio Output Voltage^3,4,8
Audio S/N^3,4,5,8
THD < 8%
— 300 —
∆V_DD = 100 mV_RMS, 100 Hz —
40
—
54
60
67
50
56
—
mV_RMS
dB
mV_RMS
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