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參數(shù)資料
| 型號： | NCS7101 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | 1.8 Volt Rail-to-Rail Operational Amplifier |
| 中文描述： | 1.8電壓軌至軌運(yùn)算放大器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 138K |
| 代理商： | NCS7101 |
NCS7101
http://onsemi.com
12
The noninverting input threshold levels are set so that
the capacitor voltage oscillates between 1/3 and 2/3 of
V
CC
. This requires the resistors R
1a
, R
1b
and R
2
to be of
equal value. The following formula can be used to
approximate the output frequency.
R
T
470 k
R
2
470 k
R
1b
470 k
R
1a
470 k
C
T
1.0 nF
V
CC
f
O
= 1.5 kHz
0.67 V
CC
0.33 V
CC
+
0.9 V
fO
1
1.39 R
T
C
T
V
CC
0
Output Voltage
Timing Capacitor
Voltage
Figure 34. Square Wave Oscillator
R
1b
470 k
V
CC
D
2
1N4148
f
O
+
V
CC
R
2
470 k
D
1
1N4148
10 k
10 k
1.0 M
cw
R
1a
470 k
C
T
1.0 nF
0.67 V
CC
V
CC
0.33 V
CC
0
Output Voltage
Timing Capacitor
Voltage
0.67 V
CC
V
CC
0.33 V
CC
0
Output Voltage
Timing Capacitor
Voltage
The timing capacitor C
T
will charge through diode D
2
and discharge
through diode D
1
, allowing a variable duty cycle. The pulse width of the
signal can be programmed by adjusting the value of the trimpot. The ca-
pacitor voltage will oscillate between 1/3 and 2/3 of V
CC
, since all the
resistors at the noninverting input are of equal value.
Clockwise, Low Duty Cycle
CounterClockwise, High Duty Cycle
Figure 35. Variable Duty Cycle Pulse Generator
cww
R
1
1.0 M
R
2
1.0 M
R
3
1.0 k
C
in
10 F
2.5 V
10,000 F
+
Ceff.
R1
R3Cin
2.5 V
≈
Figure 36. Positive Capacitance Multiplier
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCS7101SN1T1 | CONNECTOR |
| NCS7101SN1T1G | MODULE |
| NCS7101SN2T1 | 1.8 Volt Rail-to-Rail Operational Amplifier |
| NCV1009 | 2.5 Volt Reference |
| NCV1009D | 2.5 Volt Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCS7101/D | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.8 Volt Rail-to-Rail Operational Amplifier |
| NCS7101_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.8 Volt Rail−to−Rail Operational Amplifier |
| NCS7101SN1T1 | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8-10V Sngl Rail to RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| NCS7101SN1T1G | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8-10V Sngl Rail to Rail Industrial Temp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| NCS7101SN2T1 | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8-10V Sngl Rail to RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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