SI4730-D50 Datasheet, PDF (14/34 Pages) Silicon Laboratories – BROADCAST AM/FM RADIO RECEIVER

Si4730/31-D50
Table 10. AM Receiver Characteristics^1,2
(V_A = 2.7 to 5.5 V, V_D = 1.62 to 3.6 V, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
Sensitivity^3,5,6
f_RF
520 — 1710
kHz
(S+N)/N = 26 dB
—
25
35
µV EMF
Large Signal Voltage Handling^6,7
Power Supply Rejection Ratio⁶
Audio Output Voltage^3,8
Audio S/N^3,5,8
THD < 8%
— 300 —
∆V_A = 100 mV_RMS, 100 Hz
—
40
—
54
60
67
50
60
—
mV_RMS
dB
mV_RMS
dB
Audio THD^3,8
—
0.1
0.5
%
Antenna Inductance^6,9
180 — 450
µH
Powerup Time⁶
From powerdown
—
— 110
ms
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.
14
Rev. 1.0