- 您现在的位置：买卖IC网 > PDF目录18713 > DR-TRC103-915-EV (RFM)BOARD EVALUATION 915MHZ RFM RFIC PDF资料下载
参数资料
| 型号： | DR-TRC103-915-EV |
| 厂商： | RFM |
| 文件页数： | 48/65页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 915MHZ RFM RFIC |
| 标准包装： | 1 |
| 类型： | 收发器，SRR |
| 频率： | 902MHz ~ 928MHz |
| 适用于相关产品： | TRC103-915 |
| 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页当前第48页第49页第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
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 and the byte in RXCFG13 . For the standard crystal fre-
quency of 12.8 MHz:
F OPP = 200*(L + 1)/(F+1), 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, and F is the integer value of the bit pattern in RXCFG13 , which has a default value of 7. As-
suming this default value of F is used, 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
and the byte in RXCFG13 . For the standard crystal frequency of 12.8 MHz:
F CPP = 100 + 200*(J + 1)/(F+1), 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, J is the integer value of the
bit pattern in RXCFG10 bits 3..0, and F is the integer value of the bit pattern in RXCFG13 , which has a default
value of 7. Assuming this default value of F is used, 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 57. 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
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
www.RFM.com E-mail: info@rfm.com
? 2009-2010 by RF Monolithics, Inc.
Technical support +1.800.704.6079
Page 48 of 65
TRC103 - 11/29/12
相关PDF资料 |
PDF描述 |
|---|---|
| DR-TRC103-868-EV | BOARD EVALUATION 868MHZ RFM RFIC |
| TC70N6C32K7680 | OSCILLATOR 32.7680 KHZ 2.5V SMD |
| TC70N3A32K7680 | OSCILLATOR 32.7680 KHZ 2.5V SMD |
| TC70L3C32K7680 | OSCILLATOR 32.7680 KHZ 3.3V SMD |
| EK64905-01 | KIT EVAL FOR 64904 NO CABLES |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DR-TRC103-950-DK | 功能描述:KIT DEV 950MHZ RFIC SRR RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| DR-TRC103-950-EV | 功能描述:BOARD EVALUATION 950MHZ RFM RFIC RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| DR-TRC104-2400-DK | 功能描述:射频开发工具 TRC104 Development Kit 2.4 GHz 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-TRC104-2400-EV | 制造商:RFM 功能描述:BOARD EVALUATION 2.4GHZ RFM RFIC |
| DR-TRC105-304-DK | 功能描述:射频开发工具 TRC105 Development Kit 303-307 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。