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参数资料
| 型号： | TRC105 |
| 厂商： | RFM |
| 文件页数： | 50/67页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 300MHZ-510MHZ 32TQFN |
| 标准包装： | 1 |
| 频率： | 300MHz ~ 510MHz |
| 数据传输率 - 最大： | 200kbps |
| 调制或协议： | FSK，OOK |
| 应用： | 通用 |
| 功率 - 输出： | 13dBm |
| 灵敏度： | -112dBm |
| 电源电压： | 2.1 V ~ 3.6 V |
| 电流 - 接收： | 3mA |
| 电流 - 传输： | 30mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-TQFN |
| 包装： | 标准包装 |
| 产品目录页面： | 583 (CN2011-ZH PDF) |
| 其它名称： | 583-1159-6 |
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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
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