SI4827-A10 Datasheet, PDF (9/25 Pages) Silicon Laboratories – BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW RADIO RECEIVER

Si4827-A10
Table 6. AM/SW Receiver Characteristics^{1, 2}
(V_DD = 2.7 to 3.6 V, TA = 0 to 70 °C)
Parameter
Input Frequency
Symbol
f_RF
Test Condition
Medium Wave (AM)
Short Wave (SW)
Min Typ Max
504 — 1750
2.3 — 28.5
Unit
kHz
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
(S+N)/N = 26 dB
—
30
—
µV EMF
THD < 8%
— 300 —
∆V_DD = 100 mV_RMS, 100 Hz —
40
—
—
54
—
—
45
—
mV_RMS
dB
mV_RMS
dB
—
0.1
—
%
180 — 450
µH
Notes:
1. Additional testing information is available in “AN603: Si4822/26/27/40/44 DEMO Board Test Procedure.”
Volume = maximum for all tests. Tested at RF = 6 MHz.
2. To ensure proper operation and receiver performance, follow the guidelines in “AN602: Si4822/26/27/40/44 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 = 0 to 70 °C)
Parameter
Symbol Test Condition
Min
Typ
Max Unit
XTALI Supported Reference Clock
Frequencies*
Reference Clock Frequency
Tolerance for XTALI
REFCLK_PRESCALE
REFCLK
Reference Clock
31.130 32.768 40,000 kHz
–100
—
100
ppm
1
—
4095
31.130 32.768 34.406 kHz
Crystal Oscillator Frequency
Crystal Oscillator
—
32.768
—
kHz
Crystal Frequency Tolerance
–100
—
100
ppm
Board Capacitance
—
—
3.5
pF
*Note: The Si4827-A10 divides the RCLK input by REFCLK_PRESCALE to obtain REFCLK. There are some RCLK
frequencies between 31.130 kHz and 40 MHz that are not supported. For more details, see Table 9 of "AN610:
Si48xx ATDD Programming Guide.”
Rev. 1.0
9