SI4739-B20-GMR Datasheet, PDF (13/24 Pages) Silicon Laboratories – BROADCAST MULTI-BAND RADIO RECEIVER

Si473x-B20
Table 8. AM/SW/LW Receiver Characteristics¹
(V_DD = 2.7 to 5.5 V, V_IO = 1.5 to 3.6 V, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Long Wave (LW)
153 — 279
kHz
Input Frequency
f_RF
Sensitivity^{2,3,4,5, 6}
Large Signal Voltage Handling^5,7
Power Supply Rejection Ratio
Audio Output Voltage^2,8
Audio S/N^2,3,4,6,8
Audio THD^2,4,8
Medium Wave (AM)
520
Short Wave (SW)
2.3
(S+N)/N = 26 dB
—
THD < 8%
—
ΔV_DD = 100 mV_RMS, 100 Hz —
54
50
—
— 1710
— 21.85
25
35
300 —
40
—
60
67
56
—
0.1 0.5
kHz
MHz
µV EMF
mV_RMS
dB
mV_RMS
dB
%
Antenna Inductance
Long Wave (LW)
— 2800 —
µH
Medium Wave (AM)
180 — 450
Powerup Time
From powerdown
—
— 110
ms
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. FMOD = 1 kHz, 30% modulation, A-weighted, 2 kHz channel filter.
3. B_AF = 300 Hz to 15 kHz, A-weighted.
4. f_RF = 1000 kHz, f = 10 kHz.
5. Guaranteed by characterization.
6. Analog audio output mode.
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. 0.5
13