SI4708 Datasheet, PDF (2/3 Pages) Silicon Laboratories – Broadcast FM Radio Tuner for Portable Applications

Si4708/09
Broadcast FM Radio Tuner for Portable Applications
Selected Electrical Specifications
Parameter
Symbol
Test Condition
Min
Typ
Max
Input Frequency
Sensitivity
f_RF
76
—
108
(S+N)/N = 26 dB
—
1.1
—
Input IP3
|f₂ – f₁| > 1 MHz; f₀ = 2 x f₁ – f₂
—
106
—
AGC disabled
Adjacent Channel Selectivity
±200 kHz
—
50
—
Alternate Channel Selectivity
±400 kHz
—
70
—
RCLK Frequency
—
32.768
—
RCLK Frequency Tolerance
–200
—
200
Audio Output Voltage
72
80
90
Audio Band Limits
±1.5 dB
30
—
15k
Audio S/N
—
59
—
Audio THD
—
0.1
0.5
Supply Voltage
Interface Supply Voltage
Ambient Temperature
Supply Current
Powerdown Current
Seek/Tune Time
V_D, V_A
V_IO
T_A
I_AD
I_PD
2.7
—
5.5
1.5
—
3.6
–20
25
85
—
14.6
—
—
8.5
12
—
—
60
SCLK Frequency
Powerup Time
f_CLK
3-wire operation
f_SCL
2-wire operation
From powerdown
—
—
2.5
—
—
400
—
—
110
Unit
MHz
µV EMF
dBµV EMF
dB
dB
kHz
ppm
mVrms
Hz
dB
%
V
V
C
mA
µA
ms/channel
MHz
kHz
ms
Pin Assignments
Package Information
1 16
15
14 13 LOUT
FM1 2
12 ROUT
RFGND 3
GND
PAD
11 GND
RST ⁴
10 VD
SEN 5 ⁶
7
89
Symbol
Millimeters
Min
Nom
Max
A
0.50
0.55
0.60
A1
0.00
0.02
0.05
b
0.18
0.23
0.28
c
0.25
0.30
0.35
D
2.50 BSC
D2
1.35
1.40
1.45
e
0.50 BSC
E
2.50 BSC
Symbol
E2
f
L
aaa
bbb
ccc
ddd
eee
Millimeters
Min
Nom
Max
1.35
1.40
1.45
2.00 BSC
0.25
0.30
0.35
—
—
0.05
—
—
0.05
—
—
0.08
—
—
0.10
—
—
0.10
FM Tuner
Copyright © 2008 by Silicon Laboratories
4.02.08
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