SI4706-C31 Datasheet, PDF (13/36 Pages) Silicon Laboratories – HIGH-PERFORMANCE FM RDS/RBDS RECEIVER

Si4706-C31
Table 9. FM Receiver Characteristics^1,2 (Continued)
(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
Audio Output L/R Imbalance
Audio Frequency Response Low³
Audio Frequency Response High³
Audio Stereo Separation^5,6
Audio Mono S/N^5,6,7
Audio Stereo S/N^5,6,7
Audio THD^5,11
De-emphasis Time Constant³
Mono
–1
—
1
dB
–3 dB
—
—
30
Hz
–3 dB
15
—
—
kHz
35
40
—
dB
55
63
—
dB
—
58
—
dB
—
0.1
0.5
%
FM_DEEMPHASIS = 2 70
75
80
µs
FM_DEEMPHASIS = 1 45
50
54
µs
Audio Output Load Resistance³
R_L
Single-ended, at
LOUT/ROUT pins
10
—
—
k
Audio Output Load Capacitance³
Seek/Tune Time³
Powerup Time³
RSSI Offset¹²
C_L
Single-ended, at
LOUT/ROUT pins
—
—
50
pF
RCLK tolerance
= 100 ppm
—
—
60 ms/channel
From powerdown
—
—
110
ms
Input levels of 8 and
–3
—
3
dB
60 dBµV at RF Input
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.
Rev. 1.0
13