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| 型号： | SI4312-B10-GM |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 13/22页 |
| 文件大小： | 0K |
| 描述： | IC RX OOK 315/434MHZ 20VQFN |
| 特色产品： | Si4010 EZRadio? Wireless IC |
| 标准包装： | 490 |
| 系列： | EZRadio® |
| 频率： | 315MHz，434MHz |
| 灵敏度： | -110dBm |
| 数据传输率 - 最大： | 10 kBaud |
| 调制或协议： | OOK |
| 应用： | 车库门开启器，RKE，安全警报 |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 585 (CN2011-ZH PDF) |
| 其它名称： | 336-1977-5 |
Si4312
3.9. Crystal Oscillator
An on-board crystal oscillator is used to generate a 16 MHz reference clock for the Si4312. This reference
frequency is required for proper operation of the Si4312 and is used for calibration of the on-chip VCO and other
timing references. No external load capacitors are required to set the 16 MHz reference frequency if the
recommended crystal load capacitor is around 14 pF, assuming the effective board capacitance between pins
XTL1 and XTL2 is 3 pF and the chip input capacitance on pins XTL1 or XTL2 is 11 pF. Refer to Table 6, “Crystal
Characteristics,” on page 6 for board capacitance and frequency tolerance information. The frequency tolerance of
the crystal should be chosen such that the received signal is within the IF bandwidth of the Si4312 receiver.
Additionally, the Si4312 can be driven by an external 16 MHz reference clock. The clock signal can be applied to
either the XTL1 or XTL2 inputs. When the 16 MHz reference clock is applied to one of the inputs, the other crystal
input pin must be floating.
3.10. Reset Pin
Driving the RST pin (pin 4) low will disable the Si4312 and place the device into reset mode. All active blocks in the
device are powered off in this mode, bringing the current consumption to less than 10 uA. The Si4312 is enabled
by driving the RST pin (pin 4) to VDD. Refer to Table 4 "Reset Timing Characteristics" for the reset timing
requirements. The chip requires about 500 ms to go from reset to active mode. The Si4312 can output invalid data
during the 500 ms turn-on time.
Rev. 0.5
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI4312-B10-GMR | 功能描述:射频接收器 315/434 MHz OOK Receiver RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| SI4312-DB | 制造商:SILABS 制造商全称:SILABS 功能描述:Si4312 DEMO BOARD USERa??S GUIDE |
| SI4312-DK1 | 制造商:Silicon Laboratories Inc 功能描述: |
| SI4313 | 制造商:SILABS 制造商全称:SILABS 功能描述:Si4313 LOW-COST ISM RECEIVER |
| SI4313-B1 | 制造商:SILABS 制造商全称:SILABS 功能描述:Si4313 LOW-COST ISM RECEIVER |
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