參數(shù)資料
型號： MICRF112
廠商： Micrel Semiconductor,Inc.
英文描述： QwikRadio㈢ UHF ASK/FSK Transmitter
中文描述： QwikRadio系列㈢超高頻ASK / FSK發(fā)射器
文件頁數(shù)： 12/20頁
文件大?。?/td> 537K
代理商： MICRF112
Micrel, Inc.
MICRF112
Functional Diagram
March 2007
12
M9999-030107
(408) 944-0800
Figure 3. Functional Block Diagram MICRF112 10 Pin ASK / FSK Version
Functional Description
Figure 3 shows a functional block diagram of the
MICRF112 transmitter. The MICRF112 can be best
described as a phase locked transmitter. The system
can be partitioned into six functional blocks; crystal
oscillator, PLL×32, power ampli
fi
er, enable control,
under voltage detect and open drain switch for FSK
operation.
Crystal Oscillator
The reference oscillator is crystal-based
con
fi
guration. It is designed to accept crystals with
frequency from 9.375MHz to 14.0625MHz.
Pierce
Crystal Oscillator Parameters for ASK Operation
Figure
4
shows
a
con
fi
guration for ASK operation. The reference oscillator
is capable of driving crystals with ESR range from 20
to 300
.
When the ESR of crystal is at 20
, the crystal parameter
limits are:
ESR 20
C
PAR
2 to 10pF
C
MO
10 to 40fF
reference
oscillator
circuit
Figure 4. Reference Oscillator ASK Operation
When the ESR of crystal is at 300
, the crystal
parameter limits are:
ESR
300
C
PAR
2 to 5pF
C
MO
10 to 40fF
C
LOAD
10 to 30pF
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MICRF112_11 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio? UHF ASK/FSK Transmitter
MICRF112-315 EV 制造商:Micrel Inc 功能描述:Evaluation board for MICRF112
MICRF112-315-EV 功能描述:EVAL BOARD FOR MICRF112 315MHZ 制造商:microchip technology 系列:QwikRadio? 零件狀態(tài):有效 類型:發(fā)射器 頻率:315MHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:MICRF112 所含物品:板 標準包裝:1
MICRF112-433 EV 功能描述:射頻開發(fā)工具 300 to 450MHz ASK/FSK +10dBm Transmitter Evaluation Board Tuned for 433MHz - Limit 2 per customer; marketing approval required for additional boards RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V
MICRF112-433EV 制造商:Micrel 功能描述:Evaluation Board for MICRF112-433
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