- 您现在的位置：买卖IC网 > PDF目录18713 > DR-TRC105-372-EV (RFM)BOARD EVALUATION 372MHZ RFM RFIC PDF资料下载
参数资料
| 型号： | DR-TRC105-372-EV |
| 厂商： | RFM |
| 文件页数： | 50/67页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 372MHZ RFM RFIC |
| 标准包装： | 1 |
| 类型： | 收发器 |
| 频率： | 365MHz ~ 380MHz |
| 适用于相关产品： | TRC105 |
| 已供物品： | 2 个板，天线，电池 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页当前第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页
K = (F CTX - 25)/25 = 11 for F CTX = 300 kHz
For OOK operation, the receiver filters are configured as polyphase band-pass filters by setting RXCFG12 bit 7 to
1. The center frequency of the polyphase filters is set to 100 kHz to match the second IF frequency. The center
frequency, F OPP , is configured with bits 7..4 in RXCFG11 . For the standard crystal frequency of 12.8 MHz:
F OPP = 200*(L + 1)/8, with L in the range of 0 to 15
Where F OPP is the center frequency of the OOK polyphase filter in kHz, L is the integer value of the bit pattern in
RXCFG11 bits 7..4. The equation for determining L is:
L = (F OPP - 25)/25 = 3 for F OPP = 100 kHz
The recommended upper cutoff frequency for the receiver polyphase band-pass filters is:
F CPP = F OPP + BR
Where F CPP is the upper cutoff frequency of the polyphase filters in kHz and BR is the bit rate in kb/s. This equa-
tion assumes use of the high accuracy, low drift XTL1020P crystal. If an alternative crystal is used, add ? the ex-
pected drift due to temperature and aging to the equation above. F CPP is configured with bits 3..0 in RXCFG10 .
For the standard crystal frequency of 12.8 MHz:
F CPP = 100 + 200*(J + 1)/8, with the usable range of J 0 to 1
Where F CPP is the upper cutoff frequency of the receiver OOK polyphase filter in kHz and J is the integer value of
the bit pattern in RXCFG10 bits 3..0. The equation for determining J is:
J = (F CPP - 125)/25
J must be an integer value, so F CPP is limited to 2 discrete values: 125 kHz and 150 kHz. Choose the value of J
that provides the F CCP value that is nearest to the value calculated for the bit rate you are using. The recommend-
ed 3 dB bandwidth for the receiver R-C filters is:
F CRC = 3.25*F CPP
Where F CRC and F CPP are in kHz. The bandwidth of F CRC is set by bits 7..4 in RXCFG10 . The relationship of the
R-C filter bandwidth to the integer value in RXCFG10 bits 7..4 is given in Table 61. The matching values for the
125 and 150 kHz F CCP values are shown in bold:
Pattern of Bits 7..4
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
R-C Filter Bandwidth
65 kHz
82 kHz
109 kHz
137 kHz
157 kHz
184 kHz
211 kHz
234 kHz
262 kHz
321 kHz
378 kHz
414 kHz
458 kHz
514 kHz
676 kHz
987 kHz
Table 61
www.RFM.com E-mail: info@rfm.com
? 2009-2013 by RF Monolithics, Inc.
Technical support +1.800.704.6079
Page 50 of 67
TRC105 - 05/29/13
相关PDF资料 |
PDF描述 |
|---|---|
| DR-TRC105-345-EV | BOARD EVALUATION 345MHZ RFM RFIC |
| GSCA06S3 | SWITCH ROTARY SIDE |
| DR-TRC105-315-EV | BOARD EVALUATION 315MHZ RFM RFIC |
| DR-TRC105-304-EV | BOARD EVALUATION 304MHZ RFM RFIC |
| GSCA06S2 | SWITCH ROTARY SIDE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DR-TRC105-390-DK | 功能描述:射频开发工具 TRC105 Development Kit 382-398 MHz 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 |
| DR-TRC105-390-EV | 功能描述:射频开发工具 TRC105 Evaluation Board 382-398 MHz 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 |
| DR-TRC105-403-DK | 功能描述:射频开发工具 TRC105 Development Kit 402-407 MHz 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 |
| DR-TRC105-403-EV | 功能描述:射频开发工具 TRC105 Evaluation Board 402-407 MHz 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 |
| DR-TRC105-434-DK | 功能描述:射频开发工具 TRC105 Development Kit 416-436 MHz 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 |
发布紧急采购，3分钟左右您将得到回复。