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參數(shù)資料
| 型號(hào)： | MICRF033BM |
| 廠商： | MICREL INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | RES, 14.3K, 1/16W, TKF, 1%, 0603 |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 216K |
| 代理商： | MICRF033BM |
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Micrel Inc. 1849 Fortune Drive San Jose, Ca 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
MICRF003 / 033
QwikRadio
tm
900 MHz UHF Receiver
Preliminary Information
General Description
The MICRF003 is a single chip OOK (ON-OFF Keyed) Receiver IC for
remote wireless applications, employing Micrel’s latest QwikRadio
tm
technology. This device is a true “antenna-in, data-out” monolithic device. All
RF and IF tuning is accomplished automatically within the IC, which
eliminates manual tuning, and reduces production costs. Receiver functions
are completely integrated. The result is a highly reliable yet extremely low
cost solution for high volume wireless applications. Because the MICRF003
is a true single-chip radio receiver, it is extremely easy to apply, minimizing
design and production costs, and improving time to market.
The MICRF003 provides two fundamental modes of operation, FIXED and
SWP. In FIXED mode, the device functions like a conventional
Superheterodyne receiver, with an (internal) local oscillator fixed at a single
frequency based on an external reference crystal or clock. As with any
conventional superheterodyne receiver, the
transmit
frequency must be
accurately controlled, generally with a crystal or SAW (Surface Acoustic
Wave) resonator.
In SWP mode, the MICRF003 sweeps the (internal) local oscillator at rates
greater than the baseband data rate. This effectively “broadens” the RF
bandwidth of the receiver to a value equivalent to conventional super-
regenerative receivers. Thus the MICRF003 can operate with less
expensive LC transmitters without additional components or tuning, even
though the receiver topology is still superheterodyne. In this mode the
reference crystal can be replaced with a less expensive
±
0.5% ceramic
resonator.
The MICRF003 provides two additional key features: (1) a Shutdown Mode,
which may be used for duty-cycle operation, and (2) a “Wakeup” function,
which provides a logical indication of an incoming RF signal. These features
make the MICRF003 ideal for low and ultra-low power applications, such as
RKE and RFID.
All post-detection (demodulator) data filtering is provided on the MICRF003,
so no external filters need to be designed. Any one of four filter bandwidths
may be selected externally by the user. Nominal filter bandwidths range in
binary steps, from 0.75kHz to 6kHz (SWP mode) or 2.8kHz to 22.4kHz
(FIXED mode). The user only needs to program the appropriate filter
selection based on data rate and code modulation format.
Features
Complete 900 MHz Band receiver on a monolithic IC
UHF Frequency range 800 to 1000 MHz
Typical range over 170 meters with monopole antenna
Data rates to 5kbps (SWP), 20kbps (FIXED)
Automatic tuning, no manual adjustment
No Filters or Inductors required
Low Operating Supply Current--4mA @ 868MHz
Shutdown
Mode for Duty-Cycle Operation in excess of
100:1
Wakeup
Function to Enable External Decoders and
Microprocessors
Very low RF re-radiation at the antenna
CMOS logic interface to standard decoder and
microprocessor ICs
Extremely low external part count
Applications
Automotive Remote Keyless Entry
Security Systems
Low Rate Data Modems
Remote Meter Data Collection
Typical Operating Circuit
915 MHz, 2400 bps OOK
ISM Band RECEIVER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MICRF003BM | QwikRadiotm 900 MHz UHF Receiver Preliminary Information |
| MICRF004 | QwikRadio⑩ Low-Power VHF Receiver Advance Information |
| MICRF004BM | QwikRadio⑩ Low-Power VHF Receiver Advance Information |
| MICRF004BN | QwikRadio⑩ Low-Power VHF Receiver Advance Information |
| MICRF005 | 115kbps, 800MHz - 1GHz UHF Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MICRF102 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio UHF ASK Transmitter |
| MICRF102_06 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio? UHF ASK Transmitter |
| MICRF102BM | 功能描述:IC ASK TRANSMITTER UHF 8SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 發(fā)射器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應(yīng)用:- 調(diào)制或協(xié)議:UHF，ASK 數(shù)據(jù)傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數(shù)據(jù)接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲(chǔ)容量:- 特點(diǎn):- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| MICRF102BM TR | 功能描述:IC TRANSMITTER ASK UHF 8-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 發(fā)射器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- 頻率:310MHz ~ 440MHz 應(yīng)用:- 調(diào)制或協(xié)議:UHF，ASK 數(shù)據(jù)傳輸率 - 最大:20 kBaud 功率 - 輸出:1dBm ~ 5dBm 電流 - 傳輸:10mA 數(shù)據(jù)接口:PCB，表面貼裝 天線連接器:PCB，表面貼裝 存儲(chǔ)容量:- 特點(diǎn):- 電源電壓:2.2 V ~ 4 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-LSSOP（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| MICRF102YM | 功能描述:射頻發(fā)射器 300-460MHz, 5V Transmitter( Lead Free) RoHS:否 制造商:Micrel 類型:ASK Transmitter 封裝 / 箱體:SOT-23-6 工作頻率:300 MHz to 450 MHz 封裝:Reel |
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