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參數資料
| 型號： | AND8054 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Designing RC Oscillator Circuits with Low Voltage Operational Amplifiers and Comparators for Precision Sensor Applications |
| 中文描述： | RC振蕩器電路設計低電壓運算放大器和精密傳感器應用比較 |
| 文件頁數： | 14/28頁 |
| 文件大?。?/td> | 168K |
| 代理商： | AND8054 |
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AND8054/D
http://onsemi.com
14
Frequency (Hz)
Gain (dB)
0
Oscillation
Range
Figure 12. Bode Plot of Differentiator Amplifier A
3
20xlog10
C3
C4
20xlog10
R4
R3
R5
Fp1
1
2 R4C4
Fp2
1
2 R3C3
Fz1
1
2 R5C3
Assumptions
1. C3
2. C3
3. R3
4. R3
C4
C4
R4
R5
R5andR4
R5
10
Ratio Oscillator
Step 4: Verify LG 1
Step 4 will be demonstrating using the single power supply limit circuit shown in Figure 26.
The design equations are listed below.
Assume:
V2
VMax_Limit
|A3|
C3
C4
(i.e.|A2|
VMax_Limit)
1.)
2.)
Check:
Is |LG|
A1
A2
A3
VMax_Limit
1
2 fR1C1
(VMax_Limit)
C3
C4
VMax_Limit
1.)
2.)
Using the values shown in Figure 26,
1
2 (16.5 kHz)(39 K
) (240 pF)
(VMax_Limit)
C3
C4
VMax_Limit
(1.03) (VMax_Limit)
C3
C4
VMax_Limit
3.)
Oscillation will be sustained if
C3
C4
1.03
1
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