参数资料
型号: SI4737-C40-GM
厂商: Silicon Laboratories Inc
文件页数: 16/42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 12. AM Receiver Characteristics 1,2 (Continued)
(V DD = 2.7 to 5.5 V, V IO = 1.85 to 3.6 V, TA = –20 to 85 °C)
Antenna Inductance 6,9
180
450
μH
Powerup
Time 6
From powerdown
110
ms
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 = 520 kHz.
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. FMOD = 1 kHz, 30% modulation, 2 kHz channel filter.
4. Analog audio output mode.
5. B AF = 300 Hz to 15 kHz, A-weighted.
6. Guaranteed by characterization.
7. See “AN388: Si470x/1x/2x/3x/4x Evaluation Board Test Procedure” for evaluation method.
8. V IN = 5 mVrms.
9. Stray capacitance on antenna and board must be < 10 pF to achieve full tuning range at higher inductance levels.
Table 13. Reference Clock and Crystal Characteristics
(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
Reference Clock
RCLK Supported Frequencies
RCLK Frequency Tolerance 2
REFCLK_PRESCALE
REFCLK
1
31.130
–50
1
31.130
32.768
32.768
40,000
50
4095
34.406
kHz
ppm
kHz
Crystal Oscillator
Crystal Oscillator Frequency
Crystal Frequency Tolerance 2
Board Capacitance
–50
32.768
50
3.5
kHz
ppm
pF
Notes:
1. The Si4736/37/38/39 divides the RCLK input by REFCLK_PRESCALE to obtain REFCLK. There are some RCLK
frequencies between 31.130 kHz and 40 MHz that are not supported. For more details, see Table 6 of “AN332: Si47xx
Programming Guide”.
2. A frequency tolerance of ±50 ppm is required for FM seek/tune using 50 kHz channel spacing and WB tune.
16
Rev. 1.0
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