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| 型号： | MICRF500BLQTR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | TXRX UHF 700-1100MHZ 44-LQFP |
| 标准包装： | 1,000 |
| 频率： | 700MHz 中心 |
| 数据传输率 - 最大： | 128kBaud |
| 调制或协议： | FSK |
| 应用： | 遥控，遥测 |
| 功率 - 输出： | 10dBm |
| 灵敏度： | -104dBm |
| 电源电压： | 2.5 V ~ 3.4 V |
| 电流 - 接收： | 12mA |
| 电流 - 传输： | 50mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LQFP |
| 包装： | 带卷 (TR) |
MICRF500
Micrel
MICRF500
700MHz to 1.1GHz RadioWire? RF Transceiver
Final
General Description
The MICRF500 is a single chip UHF transceiver designed for
spread spectrum communication (FHSS) intended for ISM
(Industrial, Scientific and Medical) and SRD (Short Range
Device) frequency bands from 700MHz to 1100MHz with
FSK data rates up to 128k baud.
The transmitter consists of a PLL frequency synthesizer and
a power amplifier. The frequency synthesizer consists of a
voltage-controlled oscillator (VCO), a crystal oscillator, dual-
modulus prescaler, programmable frequency dividers and a
phase-detector. The loop filter is external for flexibility and
can be a simple passive circuit. The VCO is a Colpitts
oscillator which requires an external resonator and varactor.
FSK modulation can be applied externally to the VCO. The
synthesizer has two different N, M and A frequency dividers.
FSK modulation can also be implemented by switching
between these dividers (max. 2400bps). The lengths of the N
and M and A registers are 12, 10 and 6 bits respectively. For
RadioWire?
A two pin serial interface is used to program the circuit.
External components are necessary for RF input and output
impedance matching and decoupling of power. Other exter-
nal components are the VCO resonator circuit with varactor,
crystal, feedback capacitors and components for FSK modu-
lation with the VCO, loop filter, bias resistors for the power
amplifier and gyrator filters. A T/R switch can be implemented
with 2-pin diodes. This gives maximum input sensitivity and
transmit output power.
Features
all types of FSK modulation, data is entered at the DATAIXO
pin (see application circuit). The output power of the power
amplifier can be programmed to eight levels. A lock detect
circuit detects when the PLL is in lock.
In receive mode the PLL synthesizer generates the local
oscillator (LO) signal. The N, M and A values that give the LO
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Frequency range: 700MHz to 1100MHz
Modulation: FSK
RF output power: 10dBm
Sensitivity (19.2k bauds, BER=10 -3 ): –104dBm
Maximum data rate: 128k bauds
frequency are stored in the N0, M0 and A0 registers. The
Applications
receiver is a zero intermediate frequency (IF) type in order to
make channel filtering possible with low-power integrated
low-pass filters. The receiver consists of a low-noise amplifier
(LNA) that drives a quadrature mixer pair. The mixer outputs
feed two identical signal channels in phase quadrature. Each
channel includes a preamplifier, a third order Sallen-Key RC
low pass filter that protects the following gyrator filter from
strong adjacent channel signals and finally, a limiter. The
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Telemetry
Remote metering
Wireless controller
Wireless data repeaters
Remote control systems
Wireless modem
Wireless security system
main channel filter is a gyrator capacitor implementation of a
seven-pole elliptic low pass filter. The elliptic filter minimizes
Ordering Information
the total capacitance required for a given selectivity and
dynamic range. The cut-off frequency of the Sallen-Key RC
filter can be programmed to four different frequencies: 10kHz,
Part Number
MICRF500BLQ
Ambient Temp. Range
–40 ° C to +85 ° C
Package
44-Lead LQFP
30kHz, 60kHz and 200kHz. An external resistor adjusts the
cut-off frequency of the gyrator filter. The demodulator de-
modulates the I and Q channel outputs and produces a digital
data output. It detects the relative phase of the I and the Q
channel signal. If the I channel signal lags the Q channel, the
FSK tone frequency lies above the LO frequency (data ‘1’). If
the I channel leads the Q channel, the FSK tone lies below the
LO frequency (data ‘0’). The output of the receiver is available
on the DATAIXO pin. A RSSI (Receive Signal Strength
Indicator) circuit indicates the received signal level.
RadioWire is a trademark of Micrel, Inc.
Micrel, Inc. ? 1849 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 944-0970 ? http://www.micrel.com
March 2003
1
MICRF500
相关PDF资料 |
PDF描述 |
|---|---|
| MICRF501BLQ TR | TXRX SGL 300-600MHZ 44-LQFP |
| MICRF505DEV1 | KIT DEV RADIOWIRE 850-950MHZ |
| MICRF506DEV1 | EVAL BOARD EXPERIMENTAL MICRF506 |
| MICRF507YML TR | TXRX FSK LOW PWR W/AMP 32MLF |
| MICRF600DEV1 | KIT DEV RADIOWIRE 902-928MHZ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF500EVAL1 | 功能描述:射频开发工具 MICRF500 Evaluation Kit - For experimental use only RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MICRF501 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:300MHz to 600MHz RadioWire⑩ RF Transceiver |
| MICRF501BLQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:RF Micro Devices Inc 功能描述: |
| MICRF501BLQ TR | 功能描述:TXRX SGL 300-600MHZ 44-LQFP RoHS:否 类别:RF/IF 和 RFID >> RF 收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:30 系列:- 频率:4.9GHz ~ 5.9GHz 数据传输率 - 最大:54Mbps 调制或协议:* 应用:* 功率 - 输出:-3dBm 灵敏度:- 电源电压:2.7 V ~ 3.6 V 电流 - 接收:* 电流 - 传输:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 工作温度:-25°C ~ 85°C 封装/外壳:68-TQFN 裸露焊盘 包装:管件 |
| MICRF501EVAL1 | 功能描述:EVAL BOARD EXPERIMENTAL MICRF501 RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:RadioWire® 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
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