SI4730-D60-GMR Datasheet, PDF (15/44 Pages) Silicon Laboratories – BROADCAST AM/FM/SW/LW RADIO RECEIVER

Si4730/31/34/35-D60
Table 8. 64–75.9 MHz Input Frequency FM Receiver Characteristics^1,2,3
(V_A = 2.7 to 5.5 V, V_D = 1.62 to 3.6 V, T_A = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
Sensitivity^4,5,6,8
LNA Input Resistance^3,7
LNA Input Capacitance^3,7
Input IP3⁹
f_RF
64
—
75.9
MHz
(S+N)/N = 26 dB
—
3.5
—
µV EMF
3
4
5
k
4
5
6
pF
—
105
— dBµV EMF
AM Suppression^3,4,5,7
m = 0.3
—
50
—
dB
Adjacent Channel Selectivity
±200 kHz
—
50
—
dB
Alternate Channel Selectivity
Audio Output Voltage^4,5,7
Audio Output L/R Imbalance^4,7,10
Audio Frequency Response Low³
Audio Frequency Response High³
Audio Mono S/N^4,3,5,7,11
Audio THD^4,7,10
±400 kHz
–3 dB
–3 dB
—
70
—
dB
72
80
90
mV_RMS
—
—
1
dB
—
—
30
Hz
15
—
—
kHz
—
63
—
dB
—
0.1
—
%
De-emphasis Time Constant
FM_DEEMPHASIS = 2 70
75
80
µs
FM_DEEMPHASIS = 1 45
50
54
µs
Audio Output Load Resistance^3,11
R_L
Single-ended
10
Audio Output Load Capacitance^3,11
C_L
Single-ended
—
Seek/Tune Time³
RCLK tolerance
—
= 100 ppm
Powerup Time³
From powerdown
—
RSSI Offset¹²
Input levels of 8 and
–3
60 dBµV EMF
—
—
k
—
50
pF
—
60 ms/channel
—
110
ms
—
3
dB
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 = 98.1 MHz.
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. Guaranteed by characterization.
4. F_MOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
5. f = 22.5 kHz.
6. B_AF = 300 Hz to 15 kHz, A-weighted.
7. V_EMF = 1 mV.
8. Analog output mode.
9. |f₂ – f₁| > 2 MHz, f₀ = 2 x f₁ – f₂. AGC is disabled.
10. f = 75 kHz.
11. At LOUT and ROUT pins.
12. At temperature (25 °C).
Rev. 1.1
15