SI4840-A10 Datasheet, PDF (9/26 Pages) Silicon Laboratories – BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW RADIO RECEIVER

Si4840/44-A10
Table 6. AM/SW Receiver Characteristics^{1, 2}
(V_DD = 2.7 to 3.6 V, TA = –15 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
f_RF
Medium Wave (AM)
504 — 1750
kHz
Short Wave (SW)
2.3 — 28.5
MHz
Sensitivity^3,4,5
Large Signal Voltage Handling⁵
Power Supply Rejection Ratio⁵
Audio Output Voltage^3,6,8
Audio S/N^3,4,6
Audio THD^3,6
Antenna Inductance^5,7
Powerup/Band Switch Time⁵
(S+N)/N = 26 dB
—
30
—
µV EMF
THD < 8%
— 300 —
∆V_DD = 100 mV_RMS, 100 Hz —
40
—
—
60
—
—
55
—
mV_RMS
dB
mV_RMS
dB
— 0.1 0.5
%
180 — 450
µH
From powerdown
—
— 110
ms
Notes:
1. Additional testing information is available in “AN603: Si4840/44 DEMO 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 “AN602: Si484x-A 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. B_AF = 300 Hz to 15 kHz, A-weighted.
5. Guaranteed by characterization.
6. V_IN = 5 mVrms.
7. Stray capacitance on antenna and board must be < 10 pF to achieve full tuning range at higher inductance levels.
8. Tested in Digital Volume Mode.
Table 7. Reference Clock and Crystal Characteristics
(V_DD = 2.7 to 3.6 V, T_A = –15 to 85 °C)
Parameter
Symbol Test Condition
Min
Typ
Max
Unit
XTALI Supported Reference Clock
Frequencies
Reference Clock Frequency
Tolerance for XTALI
Reference Clock
—
32.768
—
kHz
–100
—
100
ppm
Crystal Oscillator Frequency
Crystal Oscillator
—
32.768
—
kHz
Crystal Frequency Tolerance
Board Capacitance
–100
—
—
—
100
ppm
3.5
pF
Rev.1.0
9