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參數(shù)資料
| 型號(hào)： | MICRF008 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | QwikRadio⑩ Sweep-Mode Receiver |
| 中文描述： | QwikRadio系列⑩掃描模式接收機(jī) |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 115K |
| 代理商： | MICRF008 |
July 2003
5
MICRF008
MICRF008
Functional Diagram
Micrel
Functional Description
The entire block diagram illustrates the basic structure of the
MICRF008BM. It is made of three sub-blocks, which are the
UHF Downconverter, the OOK Demodulator, and the Refer-
ence and Control. Also shown in the figure are two capacitors
(C
TH
, and C
AGC
) and the reference frequency device, usually
a ceramic resonator. With the exception of a supply decoupling
capacitor and the matching network on the antenna pin, these
are all the external components needed with the MICRF008BM
to make a complete UHF receiver. There is one control input,
the SEL0 pin. The purpose is to set the demodulator filter
bandwidth of either 2.4kHz or 4.8kHz, and is set high or low
according to the minimum pulse width in the demodulated
signal. The input is CMOS compatible, and is pulled-up
internally in the IC.
Receiver Operation
The MICRF008BM is a superheterodyne receiver working in
sweep mode. It is capable of data rates up to
9.6kbaud NRZ or 4.8kbaud Manchester encoded. The
MICRF008BM RF center frequency is controlled by a com-
Comparator
ANT
VCC
VSS
SEL0
REFOSC
Ceramic
Resonator
CAGC
RF
Amp
t
RF
t
IF
t
LO
R
BC
mboer
1MHz
Programmable
Low-Pass
Filter
Peak
Detector
Reference
Oscillator
Synthesizer
Control
Logic
IF
Amp
IF
Amp
CTH
DO
OOK Demodulator
UHF Downconverter
Switched-Cap
Resistor
Reference and Control
AGC
Control
pletely integrated PLL/VCO frequency synthesizer with
frequency set by a ceramic resonator. The actual swept
bandwidth is approximately 3% of the RF carrier frequency.
It makes an ideal part to work with LC-based transmitters or
other types of transmitters that are not precise in nature and
vary their frequency with time. In sweep mode the LO
frequency (local oscillator) is varied in a rate much higher
than the data signal, which results in down-conversion of
approximately 3% of the carrier frequency present at the
antenna pin. The low level RF signal is amplified by the RF
amp section and downconverted by the mixer to the IF
frequency which is amplified and filtered internally in the
device and further amplified for the peak detector. The peak
detector will detect the IF and further filtering is accomplished
in the programmable low-pass filter. The detected/filtered
signal is compared with the DC value of the demodulated
signal in the data-slicer and a digital output is provided from
the DO pin.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MICRF008BM | QwikRadio⑩ Sweep-Mode Receiver |
| MICRF011 | QwikRadiotm Receiver/Data Demodulator Preliminary Information |
| MICRF011BM | QwikRadiotm Receiver/Data Demodulator Preliminary Information |
| MICRF011BN | QwikRadiotm Receiver/Data Demodulator Preliminary Information |
| MICRF102 | QwikRadio UHF ASK Transmitter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MICRF008_11 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio Sweep-Mode Receiver |
| MICRF008BM | 功能描述:IC RECEIVER 300-440MHZ 8-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| MICRF008BM TR | 功能描述:IC RECEIVER 300-440MHZ 8-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| MICRF008YM | 功能描述:射頻接收器 300-440MHz Low-Cost Receiver, Sweep-Mode( Lead Free) RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| MICRF008YM TR | 功能描述:射頻接收器 300-440MHz Low-Cost Receiver, Sweep-Mode( Lead Free) RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
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