SI4706-C31 Datasheet, PDF (12/36 Pages) Silicon Laboratories – HIGH-PERFORMANCE FM RDS/RBDS RECEIVER

Si4706-C31
Table 9. FM Receiver Characteristics^1,2
(V_DD = 2.7 to 5.5 V, V_IO = 1.62 to 3.6 V, T_A = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
RDS Sensitivity^3,4
f_RF
76
—
108
MHz
f = 2 kHz,
—
8
— µV EMF
RDS BLER < 5%
RDS Synchronization Persistence^3,4
RDS Synchronization Stability^3,4
RDS Synchronization Time^3,4,5
RDS PI Lock Time^3,4,5,5
LNA Input Resistance³
LNA Input Capacitance³
Input IP3³
f = 2 kHz
—
RDSSYNC = 1  10 sec
3.8/60
f = 2 kHz
—
RDSSYNC = 1  10 sec
5.9/10
f = 2 kHz
—
40
f = 2 kHz
—
60
3
4
4
5
400 and 800 kHz
100 105
blockers, AGC disabled
—
µV
EMF/RDS
BLER%
— µV EMF/
RDS
BLER%
—
ms
—
ms
5
k
6
pF
— dBµV EMF
Image Rejection³
AM Suppression³
Audio Sensitivity^4,6,7
m = 0.3
(S+N)/N = 26 dB
—
50
—
dB
40
50
—
dB
—
2.2
3.5 µV EMF
Audio Sensitivity with 50  Net-
work^3,6,7
(S+N)/N = 26 dB
—
1.1
— µV EMF
Adjacent Channel Selectivity
±200 kHz
35
50
—
dB
Alternate Channel Selectivity
Blocking Sensitivity^3,8,9,10
±400 kHz
f = ±400 kHz
60
70
—
dB
—
32
—
dBµV
f = ±4 MHz
—
38
—
dBµV
Spurious Response Rejection³
In-band
35
—
—
dB
Audio Output Voltage⁶
72
80
90
mV_RMS
Notes:
1. Additional testing information is available in application note, “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 “AN332: Si47xx Programming Guide”,
“AN344: Si4706/07/4x Programming Guide”, and “AN383: Si47xx Antenna, Schematic, Layout and Design Guidelines”.
Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3. Guaranteed by characterization.
4. Half-wavelength FM antenna matching network.
5. V_EMF = 1 mV.
6. f = 22.5 kHz.
7. B_AF = 300 Hz to 15 kHz, A-weighted.
8. F_MOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise.
9. Blocker Amplitude = 100 dBµV
10. Sensitivity measured at (S+N)/N = 26 dB.
11. f = 75 kHz.
12. At temperature 25 °C.
12
Rev. 1.0