SI4735-B20GM Silicon Laboratories Inc, SI4735-B20GM Datasheet - Page 11
SI4735-B20GM
Manufacturer Part Number
SI4735-B20GM
Description
RECEIVER, RADIO, MULTIBAND, 20QFN
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI4735-B20GM.pdf
(24 pages)
Specifications of SI4735-B20GM
Frequency Range
520kHz To 21.85MHz
Rf Ic Case Style
QFN
No. Of Pins
20
Supply Voltage Range
2.7V To 5.5V
Applications
Audio Video Receivers, CD/DVD Players, Cellular Handsets, Emergency Radios
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 7. FM Receiver Characteristics
(V
Parameter
Input Frequency
Sensitivity with Headphone
Network
Sensitivity with 50 Network
RDS Sensitivity
LNA Input Resistance
LNA Input Capacitance
Input IP3
AM Suppression
Adjacent Channel Selectivity
Alternate Channel Selectivity
Spurious Response Rejection
Audio Output Voltage
Audio Output L/R Imbalance
Audio Frequency Response Low
Audio Frequency Response High
Audio Stereo Separation
Audio Mono S/N
Audio Stereo S/N
Audio THD
De-emphasis Time Constant
Audio Output Load Resistance
Audio Output Load Capacitance
Notes:
DD
1. Additional testing information is available in “AN388: Si470x/1x/2x/3x/4x Evaluation Test Board Procedure.”
2. To ensure proper operation and receiver performance, follow the guidelines in “AN383: Si47xx Antenna, Schematic,
3. F
4. f = 22.5 kHz.
5. B
6. Guaranteed by characterization.
7. V
8. |f
9. f = 75 kHz.
10. At L
11. Analog audio output mode.
12. At temperature (25°C).
= 2.7 to 5.5 V, V
Volume = maximum for all tests. Tested at RF = 98.1 MHz.
Layout and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
2
MOD
AF
EMF
3,4,5
6,8
– f
OUT
= 300 Hz to 15 kHz, A-weighted.
3,7,9
1
= 1 mV.
= 1 kHz, 75
| > 2 MHz,
and R
6
3,4,5,7,10
3,4,6,7
4,5,7,10,11
IO
OUT
= 1.5 to 3.6 V, T
3,4,7
6,7
f
0
µ
6,7
pins.
s de-emphasis, MONO = enabled, and L = R unless noted otherwise.
= 2 x f
7,9
3,7,9
6
3,4,5,6
6
6,10
1
6,10
– f
6
6
2
A
. AGC
= –20 to 85 °C)
Symbol
f
R
C
RF
1,2
L
L
is disabled.
FM_DEEMPHASIS = 2
FM_DEEMPHASIS = 1
RDS BLER < 5%
(S+N)/N = 26 dB
(S+N)/N = 26 dB
Test Condition
Rev. 0.5
Single-ended
Single-ended
f = 2 kHz,
±200 kHz
±400 kHz
In-band
m = 0.3
–3 dB
–3 dB
Min
100
76
40
35
60
35
72
15
25
55
70
45
10
—
—
—
—
—
—
—
—
3
4
Typ
105
2.2
1.1
0.1
15
50
50
70
80
63
58
75
50
—
—
—
—
—
—
—
—
4
5
Si473x-B20
Max
108
3.5
0.5
50
—
—
—
—
—
—
—
90
30
—
—
—
—
80
54
—
5
6
1
dBµV EMF
µV EMF
µV EMF
µV EMF
mV
MHz
Unit
kHz
k
k
pF
dB
dB
dB
dB
dB
Hz
dB
dB
dB
pF
µs
µs
%
RMS
11