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MICRF112 数据表(PDF) 35 Page - Microchip Technology

部件名 MICRF112
功能描述  The MICRF112 is a high-performance, easy-to-use, true “Data-In, RF-Out”, ASK/FSK, Phase-Locked Loop (PLL)- based, transmitter IC for applications in the 300 MHz to 450 MHz frequency range.
PDF  46 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MICRF112 数据表(HTML) 35 Page - Microchip Technology

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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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