si4704 Silicon Laboratories, si4704 Datasheet - Page 12

• Manufacturer Part Number: si4704
• Description: Broadcast Fm Radio Receiver For Consumer Electronics
• Manufacturer: Silicon Laboratories

Si4704/05-C40
Table 9. FM Receiver Characteristics
(V
12
Parameter
Input Frequency
Sensitivity with Headphone
Network
Sensitivity with 50  Network
RDS Sensitivity
LPI 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
Blocking Sensitivity
Notes:
DD
1. Additional testing information is available in application note, “AN388: Si470x/1x/2x/3x/4x Evaluation Board Test
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. Blocker Amplitude = 100 dBµV
13. Sensitivity measured at (S+N)/N = 26 dB.
14. At temperature 25°C.
= 2.7 to 5.5 V, V
Procedure.” 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.
1
= 1 mV.
= 1 kHz, 75
| > 2 MHz,
6
and R
6
3,4,5,7,10
3,4,6,7
4,5,6,7,10,11
IO
3,6,12,13
OUT
= 1.85 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
3,4,5,6
6
1
– f
6
6
2
. AGC
A
= –20 to 85 °C)
Symbol
f
RF
1,2
is disabled.
RDS BLER < 5%
(S+N)/N = 26 dB
(S+N)/N = 26 dB
Test Condition
Rev. 1.0
f = ±400 kHz
f = ±4 MHz
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
32
55
—
—
—
—
—
—
—
—
—
3
4
Typ
105
2.2
1.1
3.5
15
50
50
70
80
42
63
58
32
38
—
—
—
—
—
4
5
Max
108
3.5
—
—
—
—
—
—
—
—
90
30
—
—
—
—
—
—
5
6
1
dBµV EMF
µV EMF
µV EMF
µV EMF
µV EMF
mV
dBµV
dBµV
MHz
Unit
kHz
k
pF
dB
dB
dB
dB
dB
Hz
dB
dB
dB
RMS