SI4730 Datasheet, PDF (2/2 Pages) Silicon Laboratories – Broadcast AM/FM Radio Receiver

Si4730/31
Broadcast AM/FM Radio Receiver
Selected FM Electrical Specifications
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Frequency
f_RF
Sensitivity headphone matching
(S+N)/N = 26 dB
76
—
108
MHz
—
2.2
—
µV EMF
Sensitivity 50 Ω matching
(S+N)/N = 26 dB
—
1.1
—
µV EMF
Input IP3
Adjacent Channel Selectivity
|f₂ – f₁| > 1 MHz; f₀ = 2 x f₁ – f₂ —
105
— dBµV EMF
±200 kHz
—
50
—
dB
Alternate Channel Selectivity
±400 kHz
—
70
—
dB
Audio Band Limits
±1.5 dB
30
—
15k
Hz
Audio S/N
—
63
—
dB
Audio THD
—
0.1
—
%
Audio Output Voltage
72
80
90
mVrms
Supply Voltage*
V_D, V_A
Interface Supply Voltage*
V_IO
Powerdown Current*
I_PD
*Note: Applies to both FM and AM modes.
2.7
—
5.5
V
1.5
—
3.6
V
—
10
—
µA
Selected AM Electrical Specifications
Parameter
Input Frequency
Sensitivity
Audio S/N
Audio THD
Audio Output Voltage
Antenna Inductance
Symbol
f_RF
Test Condition
(S+N)/N = 26 dB
Min
Typ
Max
Unit
520
—
1710
kHz
—
38
—
µV EMF
—
58
—
dB
—
0.1
—
%
54
60
66
mVrms
180
—
600
µH
Pin Assignments
3 x 3 x 0.55 mm, 20-pin QFN Package Information
NC 1 ^{20 19 18 17} 16
FMI 2
15 NC
RFGND 3
AMI 4
GND
PAD
14 LOUT
13 ROUT
RST 5
12 GND
6 _{7 8 9 10} 11 VDD
Symbol
A
A1
b
c
D
D2
e
E
E2
Millimeters
Min
Nom
Max
0.50
0.55
0.60
0.00
0.02
0.05
0.18
0.25
0.30
0.27
0.32
0.37
3.00 BSC
1.60
1.70
1.80
0.50 BSC
3.00 BSC
1.60
1.70
1.80
Symbol
f
L
L1
aaa
bbb
ccc
ddd
eee
Millimeters
Min
Nom
Max
2.53 BSC
0.35
0.40
0.45
0.00
—
0.10
—
—
0.10
—
—
0.10
—
—
0.08
—
—
0.10
—
—
0.10
AM/FM Receiver
Copyright © 2007 by Silicon Laboratories
6.15.07
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