SI4706-D50 Datasheet, PDF (11/36 Pages) Silicon Laboratories – HIGH-PERFORMANCE FM AND RDS/RBDS RECEIVER

Si4706-D50
Table 8. FM Receiver Characteristics^1,2
(V_A = 2.7 to 5.5 V, V_D = 1.62 to 3.6 V, T_A = –20 to 85 °C, 76–108 MHz)
Parameter
Symbol
Test Condition
Min Typ Max
Unit
Input Frequency
f_RF
RDS Sensitivity^3,4
RDS Synchronization Persistence^3,4
RDS Synchronization Stability^3,4
RDS Synchronization Time^3,4,5
RDS PI Lock Time^3,4,5,6
LNA Input Resistance³
LNA Input Capacitance³
Input IP3³
Image Rejection³
AM Suppression³
Audio Sensitivity^4,6,7
Audio Sensitivity with 50  Net-
work^3,6,7
LPI Sensitivity³
76
f = 2 kHz,
—
RDS BLER < 5%
f = 2 kHz
—
RDSSYNC = 1  10 sec
f = 2 kHz
—
RDSSYNC = 1  10 sec
f = 2 kHz
—
f = 2 kHz
—
3
4
400 and 800 kHz
100
blockers, AGC disabled
—
m = 0.3
40
(S+N)/N = 26 dB
—
(S+N)/N = 26 dB
—
—
—
8
3.8/60
5.9/10
40
60
4
5
105
40
50
2.2
1.1
3.5
108
MHz
— µV EMF
—
µV
EMF/RDS
BLER%
— µV EMF/
RDS
BLER%
—
ms
—
ms
5
k
6
pF
— dBµV EMF
—
dB
—
dB
3.5 µV EMF
— µV EMF
— µV EMF
Adjacent Channel Selectivity
Alternate Channel Selectivity
Blocking Sensitivity^3,8,9,10
±200 kHz
±400 kHz
f = ±400 kHz
f = ±4 MHz
35
50
—
dB
60
70
—
dB
—
34
—
dBµV
—
30
—
dBµV
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 = 98.5 MHz.
2. To ensure proper operation and receiver performance, follow the guidelines in “AN332: Si47xx 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.
Rev. 1.0
11