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参数资料
| 型号： | DR-TRC103-950-DK |
| 厂商： | RFM |
| 文件页数： | 45/65页 |
| 文件大小： | 0K |
| 描述： | KIT DEV 950MHZ RFIC SRR |
| 标准包装： | 1 |
| 类型： | 收发器，SRR |
| 频率： | 950MHz ~ 960MHz |
| 适用于相关产品： | TRC103-950 |
| 已供物品： | 2 个板，天线，电池，线缆，CD，电源适配器 |
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The minimum required deviation for good TRC103 FSK performance is:
F DEV = BR
Where F DEV is the deviation in kHz and BR is the bit rate in kb/s. Specific to the TRC103, the minimum recom-
mended deviation is ±33 kHz, even at low data rates. F DEV is configured with an integer R stored in MCFG02 . For
the standard crystal frequency of 12.8 MHz:
F DEV = 12800/(32*(R + 1)), with the useable range of R 1 to 11
Where F DEV is the deviation in kHz. Solving the equation above for R:
R = (12800 - 32*F DEV )/32*F DEV
R must be an integer value, so F DEV is limited to 11 discrete values. If the value of R given in the above equation
is not an integer for your desired deviation, round the value of R down to the nearest integer and use this value to
meet or exceed the minimum required deviation for the bit rate you are using.
Once BR and F DEV have been determined, the bandwidths and related configuration values for the TRC103 filters
can be determined. The recommended 3 dB bandwidth (cutoff frequency) for the transmitter anti-aliasing filters is:
F CTX = 3*F DEV + 1.5*BR
Where F CTX is the 3 dB bandwidth of the transmitter anti-aliasing filters in kHz, F DEV is the frequency deviation in
kHz and BR is the bit rate in kb/s. F CTX is configured with bits 7..4 in TXCFG1A and the byte in RXCFG13 . For the
standard crystal frequency of 12.8 MHz:
F CTX = 200*(K + 1)/(F+1), with K in the range of 0 to 15
Where F CTX is the 3 dB bandwidth of the transmitter anti-aliasing filters in kHz, K is the integer value of the bit pat-
tern in TXCFG1A bits 7..4, 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 K is:
K = (F CTX - 25)/25
K must be an integer value, so F CTX is limited to 16 discrete values. If the value of K given in the above equation is
not an integer for your desired deviation, round the value of K down to the nearest integer and use this value to
set the bandwidth of the transmitter anti-aliasing filters. For operation at 90 kb/s and above, use a value of 15
for K.
The recommended 3 dB bandwidth for the receiver Butterworth filters is:
F CBW = 2*F DEV + BR
Where F CBW is the 3 dB bandwidth of the Butterworth filters in kHz, F DEV is the frequency deviation in kHz and BR
is the bit rate in kb/s. This equation assumes use of the high accuracy, low drift XTL1020P crystal. If an alterna-
tive crystal is used, add ? the expected drift due to temperature and aging to the equation above. F CBW is config-
ured with bits 3..0 in RXCFG10 and the byte in RXCFG13 . For the standard crystal frequency of 12.8 MHz:
F CBW = 200*(J + 1)/(F+1), with J in the range of 0 to 15
Where F CBW is the 3 dB bandwidth of the receiver Butterworth filters 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 CBW - 25)/25
www.RFM.com E-mail: info@rfm.com
? 2009-2010 by RF Monolithics, Inc.
Technical support +1.800.704.6079
Page 45 of 65
TRC103 - 11/29/12
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| 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 |
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| DR-TRC105-304-EV | 功能描述:射频开发工具 TRC105 Evaluation Board 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 |
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