參數(shù)資料
型號： NCV1455BDR2
廠商： ON SEMICONDUCTOR
元件分類： 模擬波形發(fā)生器
英文描述： Timers
中文描述： PULSE; RECTANGULAR, TIMER, PDSO8
封裝： PLASTIC, SO-8
文件頁數(shù)： 7/10頁
文件大?。?/td> 147K
代理商： NCV1455BDR2
MC1455, MC1455B, NCV1455B
http://onsemi.com
7
APPLICATIONS INFORMATION
Linear Voltage Ramp
In the monostable mode, the resistor can be replaced by a
constant current source to provide a linear ramp voltage. The
capacitor still charges from 0 V
CC
to 2/3 V
CC
. The linear
ramp time is given by:
2
3
1
If V
B
is much larger than V
BE
, then t can be made
independent of V
CC
.
t =
V
CC
, where I =
V
CC
V
B
V
BE
R
E
Missing Pulse Detector
The timer can be used to produce an output when an input
pulse fails to occur within the delay of the timer. To
accomplish this, set the time delay to be slightly longer than
the time between successive input pulses. The timing cycle
is then continuously reset by the input pulse train until a
change in frequency or a missing pulse allows completion of
the timing cycle, causing a change in the output level.
Figure 20. Linear Voltage Sweep Circuit
Figure 21. Missing Pulse Detector
Figure 22. Linear Voltage Ramp Waveforms
Figure 23. Missing Pulse Detector Waveforms
Discharge
Threshold
Control
Voltage
V
CC
Reset
4
3
Digital
Output
2
Trigger
1
MC1455
8
V
CC
R
E
R1
2N4403
or Equiv
V
B
R2
C
7
6
5
Sweep
Output
0.01 F
Control
Voltage
+V
CC
(5.0 V to 15 V)
Reset
R
L
V
CC
R
A
7
6
5
0.01 F
1
Trigger
Input
Output
4
8
C
2N4403
or Equiv
MC1455
t = 100 s/cm
V
E
3
2
t = 500 s/cm
(R
E
= 10 k , R2 = 100 k , R1 = 39 k , C = 0.01 F, V
CC
= 15 V)
(R
A
= 2.0 k , R
L
= 1.0 k , C = 0.01 F, V
CC
= 15 V)
I
相關(guān)PDF資料
PDF描述
NCV1455B Timers(定時器)
NCV2002 Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature
NCV2002SN1T1 Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature
NCV2002SN2T1 Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature
NCS2002 Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NCV1455BDR2G 功能描述:計時器和支持產(chǎn)品 567 Timer Commercial Temp RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel
NCV2001 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:0.9 V, Rail−to−Rail, Single Operational Amplifier
NCV2001SN2T1G 功能描述:運(yùn)算放大器 - 運(yùn)放 SNGL OPERATIONAL AMP 0.9V RAIL TO RAIL 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
NCV2001SQ2T2G 功能描述:運(yùn)算放大器 - 運(yùn)放 ANA SINGL OP AMP 1V 1MHZ 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
NCV2002 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Sub-One Volt Rail-to-Rail Operational Amplifier with Enable Feature
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