SI4706-D50 Datasheet, PDF (13/36 Pages) Silicon Laboratories – HIGH-PERFORMANCE FM AND RDS/RBDS RECEIVER

Si4706-D50
Table 9. 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
Audio Sensitivity ^3,4,5
LNA Input Resistance⁵
LNA Input Capacitance⁵
Input IP3⁶
AM Suppression^4,5,7
Adjacent Channel Selectivity
Alternate Channel Selectivity
Audio Output Voltage^4,5,7
Audio Output L/R Imbalance^5,7,8
Audio Frequency Response Low
Audio Frequency Response High
Audio Mono S/N^4,5,7,9,10
Audio THD^5,7,8
De-emphasis Time Constant
f_RF
64
(S+N)/N = 26 dB
—
3
4
—
m = 0.3
40
±200 kHz
—
±400 kHz
—
72
—
–3 dB
—
–3 dB
15
55
—
FM_DEEMPHASIS = 2 70
—
75.9
MHz
4
— µV EMF
4
5
k
5
6
pF
105
— dBµV EMF
50
—
dB
50
—
dB
70
—
dB
80
90
mV_RMS
—
1
dB
—
30
Hz
—
—
kHz
63
—
dB
0.1
0.5
%
75
80
µs
Audio Output Load Resistance¹⁰
Audio Output Load Capacitance¹⁰
Seek/Tune Time
Powerup Time
RSSI Offset¹¹
FM_DEEMPHASIS = 1 45
R_L
Single-ended
10
C_L
Single-ended
—
RCLK tolerance
—
= 100 ppm
From powerdown
—
Input levels of 8 and –3
60 dBµV EMF
50
54
µs
—
—
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 = 98.5 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 = 22.5 kHz.
5. V_EMF = 1 mV.
6. |f₂ – f₁| > 2 MHz, f₀ = 2 x f₁ – f₂. AGC is disabled.
7. F_MOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
8. f = 75 kHz.
9. B_AF = 300 Hz to 15 kHz, A-weighted.
10. At L_OUT and R_OUT pins.
11. At temperature (25 °C).
Rev. 1.0
13