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参数资料
| 型号： | MICRF112YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 13/20页 |
| 文件大小： | 550K |
| 描述： | IC XMITTER UHF ASK/FSK 10-MSOP |
| 标准包装： | 100 |
| 频率： | 300MHz ~ 450MHz |
| 应用： | RKE |
| 调制或协议： | ASK，OOK |
| 数据传输率 - 最大： | 50 kbps |
| 功率 - 输出： | 10dBm |
| 电流 - 传输： | 12.3mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 1.8 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 571 (CN2011-ZH PDF) |
| 其它名称： | 576-1963-5 MICRF112YMM-ND |
Micrel, Inc.
MICRF112
December 2011
13
M9999-120911
(408) 944-0800
Crystal Oscillator for FSK Operation
Figure 5 shows reference oscillator circuit conguration
for FSK operation. To operate the MICRF112 in FSK
mode, one additional capacitor is needed between
XTALOUT pin and XTALMOD pin. Crystal parameters
for FSK operation are the same as ASK operation
except:
? When the ESR of crystal is at 20&, C
FSK
+ C
LOAD
not to exceed 70pF.
? When the ESR of crystal is at 300&, C
FSK
+
C
LOAD
not to exceed 30pF
Figure 5. Reference Oscillator FSK Operation
PLL ?2
The function of PLL?2 is to provide a stable carrier
frequency for transmission. It is a divided by 32 phase
locked oscillator.
Power Amplifier
The power amplifier serves two purposes: 1) to buffer
the VCO from external elements and 2) to amplify the
phase locked signal. The power amplifier can produce
+10dBm at 3V (typical).
Enable Control
Enable control gates the ASK data. It only allows
transmission when Lock, Amplitude and Under Voltage
Detect conditions are valid.
Under Voltage Detect
Under voltage detect block senses operating voltage.
If the operating voltage falls below 1.6V, under voltage
detect block will send a signal to enable control block
to disable the PA.
Open Drain Switch
Open drain switch is used for FSK operation. FSK data
is fed into the FSK pin. The FSK pin is connected to the
gate of the open drain switch. The open collector is
connected to the XTALMOD pin. In Figure 4, a capacitor
is shown connected from XTALMOD pin to XTALOUT.
When FSK pin goes high, the capacitor between
XTALMOD and XTALOUT pulls the frequency of
REFOSC low .
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF112YMM TR | 功能描述:射频发射器 300 to 450MHz ASK/FSK +10dBm, 1.8V to 3.6V Transmitter with Shutdown in MSOP-10 (Lead-Free) RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| MICRF112YMM10 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:QwikRadio? UHF ASK/FSK Transmitter |
| MICRF112YMU TR | 功能描述:射频发射器 300MHz to 450MHz ASK/FSK Transmitter RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel 工作电源电压: 最大工作温度: 安装风格: |
| MICRF112YMU-TR | 功能描述:RF Transmitter ASK, FSK 300MHz ~ 450MHz 10dBm 50kbps PCB, Surface Mount Antenna 10-XFDFN Exposed Pad 制造商:microchip technology 系列:QwikRadio? 包装:剪切带（CT） 零件状态:停产 频率:300MHz ~ 450MHz 应用:RKE，TPM 调制或协议:ASK，FSK 数据速率（最大值）:50kbps 功率 - 输出:10dBm 电流 - 传输:11mA 数据接口:PCB，表面贴装 天线连接器:PCB，表面贴装 存储容量:- 特性:- 电压 - 电源:1.8 V ~ 3.6 V 工作温度:-40°C ~ 125°C 封装/外壳:10-XFDFN 裸露焊盘 标准包装:1 |
| MICRF113 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:QwikRadio㈢ ASK Transmitter |
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