參數(shù)資料
型號: IRMCK203
廠商: International Rectifier
英文描述: High Performance Sensorless Motion Control IC
中文描述: 高性能運動控制芯片傳感器
文件頁數(shù): 13/57頁
文件大小: 400K
代理商: IRMCK203
IRMCK203
IC Crystal Clock Circuitry
The clock input to the IC is a 33.33 MHz crystal oscillator. Two shunt capacitors and a possibly a series resistor is
required to terminate the crystal to the IC.
The values of the R/C will vary based on actual PCB attributes, and some empirical analysis may be required to get the
PLL to start oscillating. Once oscillating, verify that the signal waveform at the OSC1CLK and OSC2CLK pins are
sinusoidal rather than trapezoidal. Refer to Table 1 for suggested R/C values. Most low-cost crystals can be used
in this application. An example is a Citizen Part number CM309B33.333MABJT available from Digi-Key under
part number 300-4160-1-ND.
This document is the property of International Rectifier and may not be copied or distributed without expressed consent.
13
OSC1CLK
OSC2CLK
C1
IRMCK203
C2
R1
XTAL
R2
Figure 4: Oscillator Circuit
Component
XTAL
C1
C2
R1
R2
Value
33.33
5
5
0
3.9K
Units
MHz
pF
pF
Table 1: Typical Values for the Clock Circuit
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