- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378405 > AND8054 (ON SEMICONDUCTOR) Designing RC Oscillator Circuits with Low Voltage Operational Amplifiers and Comparators for Precision Sensor Applications PDF資料下載
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(shè)計低電壓運算放大器和精密傳感器應(yīng)用比較 |
| 文件頁數(shù)： | 5/28頁 |
| 文件大?。?/td> | 168K |
| 代理商： | AND8054 |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AND8054/D
http://onsemi.com
5
CIRCUIT DESCRIPTIONS
Absolute State Variable Oscillator
The absolute state variable oscillator is used when the
measurement is proportional to either one or two capacitors
(i.e. freq.
α
C
1
*C
2
). The block diagram and schematic of the
absolute circuit are shown in Figures 5 and 6. This circuit
consists of two integrators and an inverter circuit. Each
integrator has a phase shift of 90 , while the inverter adds an
additional 180 phase shift; thus, a total phase shift of 360
is fed into the input of the first integrator to produce the
oscillation. The first integrator stage consists of amplifier
A
1
, resistor R
1
and sensor capacitance C
1
. The second
integrator consists of amplifier A
2
, resistor R
2
and sensor
capacitance C
2
. Resistor–capacitor combinations R
1
and C
1
,
and R
2
and C
2
, set the gain of each integrator stage, in
addition to setting the oscillation frequency. The inverter
stage consists of amplifier A
3
, resistors R
3
and R
4
and
capacitor C
4
. Capacitor C
4
is not essential for normal
operation; however, it ensures oscillator startup under
extreme ambient temperature conditions.
Limit Circuit
Integrator
Inverter
Integrator
Figure 5. Absolute Oscillator Block Diagram
V
1
V
2
V
3
= 90
°
= 90
°
= 180
°
Limit Circuit
Figure 6. Absolute Oscillator Schematic
C1
C2
C4
R2
R3
R4
A3
A2
A1
R1
V
1
V
2
V
3
The absolute sensor capacitances C1 and C2 are used by the integration amplifiers.
+
–
+
–
+
–
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AND8058 | Two New Analog Switches Set Standards for Space Efficiency |
| AND8058D | Two New Analog Switches Set Standards for Space Efficiency |
| AND8066 | Interfacing with ECLinPS |
| AND8066D | Interfacing with ECLinPS |
| AND8067 | NL27WZ04 Dual Gate Inverter Oscillator Increases the Brightness of LEDs While Reducing Power Consumption |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AND8058 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Two New Analog Switches Set Standards for Space Efficiency |
| AND8058D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Two New Analog Switches Set Standards for Space Efficiency |
| AND8066 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Interfacing with ECLinPS |
| AND8066D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Interfacing with ECLinPS |
| AND8067 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:NL27WZ04 Dual Gate Inverter Oscillator Increases the Brightness of LEDs While Reducing Power Consumption |
發(fā)布緊急采購，3分鐘左右您將得到回復。