收藏本站
2.4GHz to 2.5GHz 802.11g/b
RF Transceivers with Integrated PA
Calculating Integer and Fractional Divider Ratios
The desired integer and fractional divider ratios can be
calculated by dividing the RF frequency (f RF ) by f COMP .
For nominal 802.11g/b operation, a 40MHz reference
oscillator is divided by 2 to generate a 20MHz compari-
son frequency (f COMP ). The following method can be
used when calculating divider ratios supporting various
reference and comparison frequencies:
LO Frequency Divider = f RF / f COMP = 2437MHz /
20MHz = 121.85
Integer Divider = 121 (d) = 0111 1001 (binary)
Fractional Divider = 0.85 x (2 20 - 1) = 891289 (decimal)
= 1101 1001 1001 1001 1001
See Table 13 for integer and fractional divider ratios for
802.11g/b systems using a 20MHz comparison frequency.
Table 11. Integer Divider Register (A3:A0 = 0011)
BIT
D13:D8
D7:D0
RECOMMENDED
00000
01111001
DESCRIPTION
6 LSBs of 20-Bit Fractional Portion of Main Divider
8-Bit Integer Portion of Main Divider. Programmable from 64 to 255.
Table 12. Fractional Divider Register (A3:A0 = 0100)
BIT
D13:D0
RECOMMENDED
11011001100110
DESCRIPTION
14 MSBs of 20-Bit Fractional Portion of Main Divider
Table 13. IEEE 802.11g/b Divider-Ratio Programming Words
f RF
(MHz)
(f RF / f COMP )
INTEGER DIVIDER
A3:A0 = 0011, D7:D0
FRACTIONAL DIVIDER
A3:A0 = 0100, D13:D0 A3:A0 = 0011, D13:D8
2412
2417
2422
2427
2432
2437
2442
2447
2452
2457
2462
2467
2472
2484
120.6
120.85
121.1
121.35
121.6
121.85
122.1
122.35
122.6
122.85
123.1
123.35
123.6
124.2
0111 1000b
0111 1000b
0111 1001b
0111 1001b
0111 1001b
0111 1001b
0111 1010b
0111 1010b
0111 1010b
0111 1010b
0111 1011b
0111 1011b
0111 1011b
0111 1100b
2666h
3666h
0666h
1666h
2666h
3666h
0666h
1666h
2666h
3666h
0666h
1666h
2666h
0CCCh
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
1Ah
33h
______________________________________________________________________________________
25
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX2837EVKIT+ KIT EVAL FOR MAX2837
MAX2838EVKIT+ KIT EVAL FOR MAX2838
MAX2839ASEVKIT+ KIT EVAL FOR MAX2839A WLP
MAX2839EVKIT+ KIT EVAL FOR MAX2839
MAX2851ITK+ TRANSMITTER MIMO 5GHZ 5CH 68TQFN
MAX2852ITK+ IC RECEIVER DFS 5GHZ 68TQFN
MAX2870EVKIT# EVAL KIT MAX2870
MAX2904EVKIT EVAL KIT
相关代理商/技术参数
MAX2832ETM+ 制造商:Maxim Integrated Products 功能描述:2.4GHZ TO 2.5GHZ, 802.11G RF TRANSCEIVER 制造商:Maxim Integrated Products 功能描述:IC+MAX2832ETM+ - Rail/Tube
MAX2832ETM+CFK 制造商:Maxim Integrated Products 功能描述:2.4GHZ TO 2.5GHZ, 802.11G RF TRANSCEIVERS WITH INTEGRATED PA - Rail/Tube
MAX2832ETM+T 制造商:Maxim Integrated Products 功能描述:2.4GHZ TO 2.5GHZ, 802.11G RF TRANSCEIVER 制造商:Maxim Integrated Products 功能描述:2.4GHZ TO 2.5GHZ, 802.11G RF TRANSCEIVERS WITH INTEGRATED PA - Tape and Reel
MAX2832ETM+TCFK 制造商:Maxim Integrated Products 功能描述:2.4GHZ TO 2.5GHZ, 802.11G RF TRANSCEIVERS WITH INTEGRATED PA - Tape and Reel
MAX2832EVKIT+ 功能描述:WiFi/802.11开发工具 MAX2832 Eval Kit RoHS:否 制造商:Roving Networks 产品:Evaluation Boards 工具用于评估:RN-171 支持协议:802.11 b/g 频率:2.4 GHz 接口类型:UART 工作电源电压:2 V to 16 V
MAX2837ETM+ 功能描述:射频收发器 2.3-2.7GHz Wireless Broadband RF Txr 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
MAX2837ETM+T 功能描述:射频收发器 2.3-2.7GHz Wireless Broadband RF Txr 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
MAX2837EVKIT+ 功能描述:WiFi/802.11开发工具 MAX2837 Eval Kit RoHS:否 制造商:Roving Networks 产品:Evaluation Boards 工具用于评估:RN-171 支持协议:802.11 b/g 频率:2.4 GHz 接口类型:UART 工作电源电压:2 V to 16 V