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參數(shù)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(shù)： | 8/28頁 |
| 文件大小： | 168K |
| 代理商： | AND8054 |
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AND8054/D
http://onsemi.com
8
C1
C2
C4
R2
R4
A3
A2
A1
R1
V
1
V
2
V
3
R3
Figure 10. Absolute Oscillator Signal Flow Diagrams
A3
R4
R3
A2
1
sR2C2
A2
1
sR2C2
A1
1
sR1C1
A1
1
sR1C1
A3
R4
R3
1
sR4C4
1
V
1
V
2
V
3
V
1
V
2
V
3
Without C
4
With C
4
+
–
+
–
+
–
ABSOLUTE OSCILLATOR DESIGN EQUATIONS
Absolute Oscillator (without C
4
)
Step 1: Find LG and s
The loop gain is found by breaking the loop and inserting a “test’’ voltage into the input.
A1
–
1
sR1C1
A2
–
1
sR2C2
A3
–R4
R3
V
TEST
V
OUT
V
1
V
2
V
3
LG
VOUT
VTEST
A1
A2
A3
s
N(s)
D(s)
1
LG
1
–
1
sR1C1
–
1
sR2C2
–R4
R3
1
R4
s2R1R2R3C1C2
s2
R4
R1R2R3C1C2
s2R1R2R3C1C2
s2R1R2R3C1C2
R4
N(s)
s2R1R2R3C1C2
R4
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