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參數(shù)資料
| 型號： | NCS2002SN2T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 運算放大器 |
| 英文描述： | Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature |
| 中文描述： | OP-AMP, 7500 uV OFFSET-MAX, 0.9 MHz BAND WIDTH, PDSO6 |
| 封裝： | SOT-23, TSOP-6 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 124K |
| 代理商： | NCS2002SN2T1 |
NCS2002, NCV2002
http://onsemi.com
13
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
0.9 V
f
O
= 1.5 kHz
0.67 V
CC
0.33 V
CC
R
1b
470 k
V
CC
D
2
1N4148
f
O
+
+
0.9 V
fO
1
1.39 R
T
C
T
V
CC
0
Output Voltage
Timing Capacitor
Voltage
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 37. 0.9 V Square Wave Oscillator
Figure 38. Variable Duty Cycle Pulse Generator
cww
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCS2002SN2T1G | 功能描述:運算放大器 - 運放 0.9V Single Rail to Rail -40 to 105 Cel 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| NCS2003 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Low Voltage, Rail-to-Rail Output Operational Amplifier |
| NCS2003SN2T1G | 制造商:ON Semiconductor 功能描述:LOW VOLTAGE RAIL TO RAIL - Tape and Reel 制造商:ON Semiconductor 功能描述:IC OPAMP GP RRO 制造商:ON Semiconductor 功能描述:Operational Amplifiers - Op Amps LOW VOLTAGE RR 制造商:ON Semiconductor 功能描述:REEL / LOW VOLTAGE RAIL TO RAIL 制造商:ON Semiconductor 功能描述:Low Voltage,R-R Output,Single Op Amp |
| NCS2003XV53T2G | 制造商:ON Semiconductor 功能描述:LOW VOLTAGE RAIL TO RAIL - Tape and Reel |
| NCS2004MUTAG | 制造商:ON Semiconductor 功能描述:R2R SINGLE 3MHZ OP AMP - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / R2R SINGLE 3MHZ OP AMP 制造商:ON Semiconductor 功能描述:3.5MHz BW,Operational Amplifier,Rail-to-Rail 制造商:ON Semiconductor 功能描述:3.5MHz BW,Wide Supply,RR,Op Amp |
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