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MICRF112 Datasheet(PDF) 35 Page - Microchip Technology |
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MICRF112 Datasheet(HTML) 35 Page - Microchip Technology |
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35 / 46 page  MICRF112 FSK Operation Data Sheet © 2024 Microchip Technology Inc. and its subsidiaries DS70005554A - 35 13. FSK Operation The Bill of Materials tables describe the components needed for ASK operation for 433.92 MHz and 315 MHz. The following table lists the component values that change between ASK and FSK operation. Note: The use of a high FSK data rate may excite parasitic resonant modes with some crystal types. Recommended crystals from the Bill of Materials tables hold good for both ASK and FSK. Table 13-1. ASK and FSK Settings Mode R1 R2 R5 R6 JPR1 JPR2 C8 ASK NP 100 kΩ 0Ω NP 0Ω NP NP FSK 0Ω NP NP 100 kΩ NP 0Ω 3.3 pF(1) 10 pF(2) Notes: 1. C8 = 3.3 pF for 1 kHz using HC49/U or HC49US type crystals. 2. C8 = 10 pF for 10 kHz using HC49/U, (high profile) only. Table 13-2. Enable Control (Shutdown) R3 R4 Constant ON 0Ω NP External Standby Control NP 100 kΩ |
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