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参数资料
| 型号： | AWS24S |
| 厂商： | Artaflex Inc |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | MODULE WIRELESS USB EXT ANT |
| 标准包装： | 50 |
| 系列： | WirelessUSB™ |
| 频率： | 2.4GHz |
| 数据传输率 - 最大： | 250kbps |
| 调制或协议： | DSSS，GFSK |
| 应用： | AMR，HID，RKE，智能设备 |
| 功率 - 输出： | 0dBm |
| 灵敏度： | -97dBm |
| 电源电压： | 2.4 V ~ 3.6 V |
| 电流 - 接收： | 21mA |
| 电流 - 传输： | 21mA |
| 数据接口： | 连接器，2 x 6 接头，2mm 间距 |
| 天线连接器： | U.FL |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | PCB 模块 |
| 其它名称： | 748-1001 |
2.4GHz DSSS SPI Radio for External Antenna
AWS24S
Data Sheet
Figure 6 - SPI Incrementing Burst Write Sequence
6
Power Management
The operating voltage of the module is 2.4V to 3.6V DC, which is applied to the V cc pin 2 of the connector. The device can be
shutdown to a fully static sleep mode by writing to the FRC END = 1 and END STATE = 000 bits in the XACT_CFG_ADR
register over the SPI interface. The module will enter sleep mode within 35-μs after the last SCK positive edge at the end of
this SPI transaction. Alternatively, the module may be configured to automatically enter sleep mode after completing packet
transmission or reception. When in sleep mode, the on-chip oscillator is stopped, but the SPI interface remains functional.
The module will wake from sleep mode automatically when the module is commanded to enter transmit or receive mode.
When resuming from sleep mode, there is a short delay while the oscillator restarts. The module may be configured to assert
the IRQ pin when the oscillator has stabilized.
7
Low Noise Amplifier (LNA) and Received Signal Strength Indication (RSSI)
The gain of the receiver may be controlled directly by clearing the AGC EN bit and writing to the Low Noise Amplifier (LNA) bit of
the RX_CFG_ADR register. When the LNA bit is cleared, the receiver gain is reduced by approximately 20 dB, allowing accurate
reception of very strong received signals (for example when operating a receiver very close to the transmitter). Approximately 30
dB of receiver attenuation can be added by setting the Attenuation (ATT) bit; this allows data reception to be limited to devices at
very short ranges. Disabling AGC and enabling LNA is recommended unless receiving from a device using external PA.
When the module is in receive mode the RSSI_ADR register returns the relative signal strength of the on-channel signal power.
When receiving, the module will automatically measure and store the relative strength of the signal being received as a 5- bit value.
An RSSI reading is taken automatically when the SOP is detected. In addition, a new RSSI reading is taken every time the
previous reading is read from the RSSI_ADR register, allowing the background RF energy level on any given channel to be easily
measured when RSSI is read when no signal is being received. A new reading can occur as fast as once every 12 μs.
8
Antenna
In order for the AWS24S radio to operate properly, the module requires an antenna. The antenna will connect to the U.FL
connector on the module. AWS24S has a modular grant from FCC if it is used with a ? Dipole antenna having the antenna
specs as shown below. The antenna is available and Artaflex offer that antenna to our customers. OEM planning to obtain
their own antenna need to consider the following properties to ensure modular compliance is maintained.
Artaflex Inc.
215 Konrad Crescent
Markham, Ontario, Canada
DSAWS24S Rev 5v0
Revised Jan 23, 2009
L3R8T9
905-479-0148
Page 6 of 14
http://www.artaflexmodules.com
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