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RF63 Datasheet(PDF) 26 Page - List of Unclassifed Manufacturers

Part # RF63
Description  Ultra-Low Power Integrated UHF Transceiver
PDF  91 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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RF63 Datasheet(HTML) 26 Page - List of Unclassifed Manufacturers

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ADVANCED COMMUNICATIONS & SENSING
Page 26 of 91
RF63
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
450
Butterworth Filter's BW, FSK
Actual
BW
Theoretical
BW
400
350
300
250
200
150
100
50
0
0
2
4
6
8
10
12
14
16
Val (RXParam_ButterFilt) [d]
Figure 18: Butterworth Filter's Actual BW
Table 37 suggests filter settings in FSK mode, along with the corresponding passive filter bandwidth and the
accepted tolerance on the crystal reference.
3.4.6. Channel Filters Setting in OOK Mode
The center frequency, fo, is always set to 100kHz. The following chart shows the receiver bandwidth when
changing RXParam_Butterfilt bits, whilst the polyphase filter is activated.
450
Polyphase Filter's BW, OOK
Actual
BW
Theoretical
BW
400
350
300
250
200
150
100
50
0
0
2
4
6
8
10
12
14
16
Val (RXPara m_ButterFilt [d]
RXParam_PolypFilt="0011"
Figure 19: Polyphase Filter's Actual BW
Table 38 suggests a few filter settings in OOK mode, along with the corresponding passive filter bandwidth and the
accepted tolerance on the crystal reference.
3.4.7. RSSI
After filtering, the In-phase and Quadrature signals are amplified by a chain of 11 amplifiers, each with 6dB gain.
The outputs of these amplifiers are used to evaluate the Received Signal Strength (RSSI).
3.4.7.1. Resolution and Accuracy
Whilst the RSSI resolution is 0.5 dB, the absolute accuracy is not expected to be better than +/- 3dB due to process
and external component variation. Higher accuracy whilst performing absolute RSSI measurements will require
additional calibration.
3.4.7.2. Acquisition Time



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