参数资料
型号: SI4737-C40-GM
厂商: Silicon Laboratories Inc
文件页数: 12/42页
文件大小: 0K
描述: IC RX AM/FM/WB RDS/RBDS 20UQFN
标准包装: 490
频率: 520kHz ~ 1.71MHz,64MHz ~ 108MHz,162.4MHz ~ 162.55MHz
调制或协议: AM,FM,WB
应用: 通用
电流 - 接收: 19.9mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
特点: 配有 RSSI
电源电压: 2.7 V ~ 5.5 V
工作温度: -20°C ~ 85°C
封装/外壳: 20-UFQFN 裸露焊盘
供应商设备封装: 20-QFN(3x3)
包装: 托盘
Si4736/37/38/39-C40
Table 9. FM Receiver Characteristics 1,2
(V DD = 2.7 to 5.5 V, V IO = 1.85 to 3.6 V, T A = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Input Frequency
Sensitivity with Headphone
f RF
(S+N)/N = 26 dB
76
2.2
108
3.5
MHz
μV EMF
Network 3,4,5
Sensitivity with 50 ? Network 3,4,5,6
RDS Sensitivity 6
(S+N)/N = 26 dB
? f = 2 kHz,
1.1
15
μV EMF
μV EMF
RDS BLER < 5%
LNA Input Resistance 6,7
3
4
5
k ?
LNA Input Capacitance
6,7
4
5
6
pF
Input
IP3 6,8
100
105
dBμV EMF
Audio Output L/R Imbalance
AM Suppression 3,4,6,7
Adjacent Channel Selectivity
Alternate Channel Selectivity
Spurious Response Rejection 6
Audio Output Voltage 3,4,7
3,7,9
m = 0.3
±200 kHz
±400 kHz
In-band
40
35
60
35
72
50
50
70
80
90
1
dB
dB
dB
dB
mV RMS
dB
Audio Frequency Response
Low 6
–3 dB
30
Hz
Audio Frequency Response High 6
Audio Stereo Separation 7,9
–3 dB
15
32
42
kHz
dB
Audio Mono S/N
3,4,5,7,10
55
63
dB
Audio Stereo S/N
Audio THD 3,7,9
4,5,6,7,10,11
58
0.1
0.5
dB
%
De-emphasis Time Constant 6
FM_DEEMPHASIS = 2
FM_DEEMPHASIS = 1
70
45
75
50
80
54
μs
μs
Notes:
1. Additional testing information is available in “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 “AN383: Si47xx Antenna, Schematic,
Layout, and Design Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers.
3. F MOD = 1 kHz, 75 μ s de-emphasis, MONO = enabled, and L = R unless noted otherwise.
4. ? f = 22.5 kHz.
5. B AF = 300 Hz to 15 kHz, A-weighted.
6. Guaranteed by characterization.
7. V EMF = 1 mV.
8. |f 2 – f 1 | > 2 MHz, f 0 = 2 x f 1 – f 2 . AGC is disabled.
9. ? f = 75 kHz.
10. At L OUT and R OUT pins.
11. Analog audio output mode.
12. Blocker Amplitude = 100 dBμV
13. Sensitivity measured at (S+N)/N = 26 dB.
14. At temperature (25°C).
12
Rev. 1.0
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