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| 型号： | XR18W753IL48-F |
| 厂商： | Exar Corporation |
| 文件页数： | 1/27页 |
| 文件大小： | 0K |
| 描述： | IC RF TXRX 868-956MHZ 48QFN |
| 标准包装： | 260 |
| 频率： | 868MHz ~ 954MHz |
| 数据传输率 - 最大： | 250kbps |
| 调制或协议： | DSSS |
| 应用： | ISM |
| 功率 - 输出： | 0dBm |
| 灵敏度： | -94dBm |
| 电源电压： | 2.2 V ~ 3.6 V |
| 电流 - 接收： | 19mA |
| 电流 - 传输： | 22mA |
| 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： | 48-VFQFN 裸露焊盘 |
| 包装： | 托盘 |
| 其它名称： | 1016-1474 XR18W753IL48-F-ND |
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XR18W753
SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
MARCH 2008
GENERAL DESCRIPTION
The XR18W753 is a low-power, single-chip RF
transceiver designed to operate in license-free
European 868 MHz SRD, North American / Australian
915 MHz ISM bands. Digital I/Q modulation,
demodulation and direct sequence spread spectrum
techniques were employed to provide robust data
transmission in signal congested RF environments.
The device provides extensive hardware support for
packet handling such as frame timing, data buffering,
RSSI/ED/LQI for clear channel assessment, and FCS
and CRC hardware for error detection. TX output
power is programmable from -24 dBm to 0 dBm with
100 Kbps and 250 Kbps O-QPSK data supported.
APPLICATIONS
? Industrial/Home automation, monitoring and control
? Point of sales and data collection terminals
? Entertainment, game, toy, robot, and remote control
? Active RFID, asset tracking and keyless entry
? Lighting, HVAC energy management
? Automatic meter reading
? Wireless sensor and telemetry networks
F IGURE 1. RF TRANSCEIVER BLOCK DIAGRAM
REV. 1.0.0
FEATURES
? 2.2 to 3.6 Volt Operation
? 868 MHz to 956 MHz
? Direct-Sequence-Spread-Spectrum Transceiver
? Direct-up-conversion I/Q modulator
? Low-IF I/Q digital receiver
? Superior blocking/desensitization performance
? RSSI / ED / LQI for clear channel assessment
? FCS computation and CRC for error detection
? Low BOM cost and ease of production
? I 2 C Interface to data buffer and internal registers
? Fully integrated loop filter with few external
components needed (crystal, capacitors, antenna
and matching networks)
? Programmable TX output power in 3 dB steps
? Receiver sensitivity of -94 dBm at 100 Kbps
? Supports O-QPSK 100 Kbps and 250 Kbps data
? Industrial temperature (-40 to +85 o C)
? 48-pin QFN package
16MHz
XTAL
VREG_CLK_EN
16MHz
CLK
TX
DATA
CLOCK
GENERATION
Voltage
Regulator
SCL
SDA
DATA
ACCESS
CONTROLLER
BUFFER
RX
DATA
BUFFER
P
L
M
E
CRC
Digital
Modem
Modem
RF
Matching
Network
cca_ed_ready
Controller
IRQ#
ModemControl &Status
pck_tx_ready
pck_received
plme_ready
Exar Corporation 48720 Kato Road, Fremont CA, 94538 ? (510) 668-7000 ? FAX (510) 668-7017 ? www.exar.com
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