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参数资料
| 型号： | MRF24J40MBT-I/RM |
| 厂商： | Microchip Technology |
| 文件页数： | 9/34页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 2.4GHZ 802.15.4 |
| 标准包装： | 350 |
| 频率： | 2.4GHz |
| 数据传输率 - 最大： | 250kbps |
| 调制或协议： | 802.15.4 |
| 功率 - 输出： | 20dBm |
| 灵敏度： | -102dBm |
| 电源电压： | 2.4 V ~ 3.6 V |
| 电流 - 接收： | 25mA |
| 电流 - 传输： | 130mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | 板载，跟踪 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 模块 |
| 包装： | 带卷 (TR) |
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MRF24J40MB
1.3
1.3.1
Operation
PA/LNA CONTROL
The internal RF state machine is configured for the PA/
LNA mode by setting TESTMODE (0x22F<2:0>) = 111 .
Pins, GPIO1 and GPIO2, then control the RF switches,
Operation of the Power Amplifier (PA) IC3 and Low Noise
Amplifier (LNA) IC5 is controlled by the MRF24J40
PA and LNA automatically when the MRF24J40
receives and transmits data.
internal RF state machine via RF switches, IC2 and IC4,
and the GPIO1 and GPIO2 pins on the MRF24J40.
Note:
A complete explanation of the operation of
the PA/LNA control is documented in the
Figure 1-6 shows the PA/LNA block diagram. Figure 2-1
“MRF24J40 Data Sheet”
(DS39776),
is the schematic diagram for the module.
Section 4.2 “External PA/LNA Control” .
FIGURE 1-6:
PCB
Antenna
PA/LNA BLOCK DIAGRAM
RF Switch
RF Switch
AS179-92
LNA
uPC8233TK
LNA
AS179-92
Balun
RFP
RFN
PA
V1 V2
PA
V1 V2
PA2423L
GPIO1
GPIO2
MRF24J40
1.3.2
ENERGY DETECTION (ED)
1.3.3
SLEEP
Before performing an energy detection (see
Section 3.6.1 “RSSI Firmware Request (RSSI
Mode 1)” in the “MRF24J40 Data Sheet” (DS39776)),
perform the following steps:
To get the lowest power consumption from the
MRF24J40MB module during Sleep, it is necessary to
disable both the PA and LNA. To do this, perform the
following steps:
1.
2.
Configure the internal RF state machine to normal
operation (TESTMODE (0x22F<2:0>) = 000 ).
Configure GPIO2 and GPIO1 direction for the
output (TRISGP2 (0x34<2>) = 1 and TRISGP1
(0x34<1>) = 1 ).
1.
2.
Configure the internal RF state machine to normal
operation (TESTMODE (0x22F<2:0>) = 000 ).
Configure the GPIO2 and GPIO1 direction for
output (TRISGP2 (0x34<2>) = 1 and TRISGP1
(0x34<1>) = 1 ).
3.
Set GPIO2 (0x33<2>) =
1
and GPIO1
3.
Set GPIO2 (0x33<2>) =
0
and GPIO1
(0x32<1>) = 0 . This enables the LNA and
(0x32<1>) = 0 . This disables the LNA and the PA.
disables the PA.
4.
Put the MRF24J40 to Sleep following the steps
4.
Perform the energy detection following the steps
in Section 3.6.1 “RSSI Firmware Request
(RSSI Mode 1) ” in the “MRF24J40 Data Sheet”
(DS39776).
Note:
The LNA will amplify the received signal.
The RSSI value will include the receive
signal strength plus the LNA amplification.
in the “MRF24J40 Data Sheet” (DS39776).
When waking the module, re-enable the PA/LNA mode.
? 2009 Microchip Technology Inc.
Preliminary
DS70599B-page 7
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MRF24J40MC-I/RM | 功能描述:Zigbee/802.15.4模块 2.4 GHZ IEEE 802.15.4 POWERTRA RoHS:否 制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm |
| MRF24J40MCT-I/RM | 功能描述:Zigbee/802.15.4模块 2.4 GHZ IEEE 802.15.4 POWERTRA RoHS:否 制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm |
| MRF24J40T-I/ML | 功能描述:射频收发器 2.4 Ghz IEEE/ZigBee transceiver RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
| MRF24WB0MA | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2.4 GHz, IEEE Std. 802.11b? RF Transceiver Module |
| MRF24WB0MA/RM | 功能描述:WiFi/802.11模块 WiFi Transceiver w/PCB antenna RoHS:否 制造商:Taiyo Yuden 支持协议:802.11 b/g/n 频带: 数据速率:150 Mbps 接口类型:SDIO 传输功率（最大）: 天线连接器类型: 工作电源电压:3.4 V to 5.5 V 传输供电电流: 接收供电电流: 最大工作温度:+ 80 C 尺寸:35 mm x 15 mm x 2.9 mm |
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