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STLBC01 датащи(PDF) 27 Page - STMicroelectronics |
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STLBC01 датащи(HTML) 27 Page - STMicroelectronics |
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27 / 40 page ![]() DocID022984 Rev 2 27/40 STLBC01 Application design guidelines Figure 7. Matching circuit for 50 Ohm antenna 8.2 Xtal oscillator The STBLC01 includes a fully integrated, low power 26 MHz Xtal oscillator with an embedded amplitude regulation loop. In order to achieve low power operation and good frequency stability of the XTAL-oscillator, certain considerations with respect to the quartz load capacitance C0 need to be taken into account. Figure 8 shows a simplified block diagram of the amplitude regulated oscillator used in the STBLC01. STBLC01 ANTP ANTN L1= 3.3nH C1= 1.2pF L3= 2.0nH L2= 3.3nH C1= 1.0pF C2= 1.2pF 50 Ohm 200 Ohm AM10261V1 |
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