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| 型号： | ATREB232ED-EK |
| 厂商： | Atmel |
| 文件页数： | 9/40页 |
| 文件大小： | 0K |
| 描述： | AT86RF232 EVAL KIT |
| 产品培训模块： | AT86RF232 Low Power 2.4 GHz Wireless Transceiver |
| 标准包装： | 1 |
| 类型： | 收发器，微控制器 |
| 频率： | 2.4GHz |
| 适用于相关产品： | AT86RF232 |
| 已供物品： | 4 块板，电池，电缆，文档 |
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Atmel AVR2092
The reference frequency is also available at pin CLKM of the radio transceiver and,
depending on the related register setting; it is divided by an internal prescaler. CLKM
clock frequencies of 16MHz, 8MHz, 4MHz, 2MHz, 1MHz, 250kHz, or 62.5kHz are
programmable (refer to [1]) . The CLKM signal is filtered by a low-pass filter to reduce
harmonic emissions within the 2.4GHz ISM band. The filter is designed to provide a
stable 1MHz clock signal with correct logic level to a microcontroller pin with
sufficiently suppressed harmonics. CLKM frequencies above 1MHz require a
redesign of R8 and C36. In case of RC cut-off frequency adjustments, depending on
the specific load and signal routing conditions, one may observe performance
degradation of channel 26.
NOTE
Channel 26 (2480MHz) is affected by the following harmonics: 155 x 16MHz or 310 x
8MHz.
By default, CLKM is routed to a microcontroller timer input; check the individual
configuration resistors in the schematic drawing. To connect CLKM to the
microcontroller main clock input, assemble R3 with a 0 ? resistor.
4.5 RF section
The Atmel AT86RF232 radio transceiver incorporates all RF and BB critical
components necessary to transmit and receive signals according to IEEE 802.15.4 or
proprietary ISM data rates.
A balun, B1, performs the differential to single-ended conversion of the RF signal to
connect the AT86RF232 to the RF switch, U1. The RF switch is controlled by the
radio transceiver output, DIG1, and selects one of the two antennas. The signal is
routed to the ceramic antenna, passing a tuning line. Solder pads located along the
tuning line allow for the optimization of antenna matching without the need for
redesigning the REB. Detailed information about the antenna diversity feature is given
in [1] and [3] .
Optionally, one or two SMA connectors can be assembled if conducted
measurements are to be performed. Refer to the schematic and populate coupling
capacitors C11/C12 and C18/C19 accordingly.
9
8427A-AVR-10/11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATREB233SMAD-EK | 功能描述:射频开发工具 AT86RF233 evaluation kit 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 |
| ATREB233-XPRO | 功能描述:XPLAINED PRO EXT REB233 制造商:atmel 系列:Xplained Pro 零件状态:有效 类型:收发器 频率:2.4GHz 配套使用产品/相关产品:AT86RF233 所含物品:板 标准包装:1 |
| ATRF231USB-RD | 制造商:Atmel Corporation 功能描述:AT86RF231 AND CORTEXM3 USB STICK - Boxed Product (Development Kits) 制造商:Atmel Corporation 功能描述:AT86RF231 and CortexM3 USB stick |
| ATRF4CE-EK | 功能描述:开发板和工具包 - 无线 RF4CE evaluation kit RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:AT32UC3L 核心:AVR32 频率: 接口类型:USB 工作电源电压:5 V |
| ATRJ8-FSSR | 制造商:Amphenol Sine Systems 功能描述:RJ PLUG, FIELD SLD STRN RELIEF |
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