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參數資料
| 型號： | LMC6772AIMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output |
| 中文描述： | DUAL COMPARATOR, 8000 uV OFFSET-MAX, 4000 ns RESPONSE TIME, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 8/11頁 |
| 文件大?。?/td> | 288K |
| 代理商： | LMC6772AIMX |
Typical Applications
(Continued)
One-Shot Multivibrator
A monostable multivibrator has one stable state in which it
can remain indefinitely. It can be triggered externally to an-
other quasi-stable state. A monostable multivibrator can thus
be used to generate a pulse of desired width.
The desired pulse width is set by adjusting the values of C
2
and R
. The resistor divider of R
and R
can be used to de-
termine the magnitude of the input trigger pulse. The
LMC6772 will change state when V
<
V
2
. Diode D
pro-
vides a rapid discharge path for capacitor C
to reset at the
end of the pulse. The diode also prevents the non-inverting
input from being driven below ground.
Bi-Stable Multivibrator
A bi-stable multivibrator has two stable states. The reference
voltage is set up by the voltage divider of R
and R
. A pulse
applied to the SET terminal will switch the output of the com-
parator high. The resistor divider of R
, R
, and R
now
clamps the non-inverting input to a voltage greater than the
reference voltage. A pulse applied to RESET will now toggle
the output low.
Zero Crossing Detector
A voltage divider of R
and R
establishes a reference volt-
age V
at the non-inverting input. By making the series resis-
tance of R
and R
equal to R
, the comparator will switch
when V
= 0. Diode D
insures that V
3
never drops below
0.7V. The voltage divider of R
and R
then prevents V
2
from going below ground. A small amount of hysteresis is
setup to ensure rapid output voltage transitions.
Oscillator
Figure 8 shows the application of the LMC6772 in a square
wave generator circuit. The total hysteresis of the loop is set
by R
, R
and R
. R
and R
provide separate charge and
discharge paths for the capacitor C. The charge path is set
through R
and D
. So, the pulse width t
is determined by
the RC time constant of R
and C. Similarly, the discharge
path for the capacitor is set by R
and D
. Thus, the time t
2
between the pulses can be changed by varying R
, and the
pulse width can be altered by R
. The frequency of the out-
put can be changed by varying both R
4
and R
5
.
DS012347-28
FIGURE 5. One-Shot Multivibrator
DS012347-30
FIGURE 6. Bi-Stable Multivibrator
DS012347-29
FIGURE 7. Zero Crossing Detector
DS012347-31
FIGURE 8. Square Wave Generator
www.national.com
8
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PDF描述 |
|---|---|
| LMC6772AIN | Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output |
| LMC6772BIM | Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output |
| LMC6772BIMX | Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output |
| LMC6772BIN | Dual Micropower Rail-To-Rail Input CMOS Comparator with Open Drain Output |
| LMD18200-2D-QV | 3A, 55V H-Bridge |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMC6772AIMX/NOPB | 功能描述:校驗器 IC RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| LMC6772AIN | 功能描述:IC COMP DUAL MICRPWR CMOS 8-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:通用 元件數:1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標準）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標準）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
| LMC6772BIM | 功能描述:校驗器 IC RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| LMC6772BIM NOPB | 制造商:Texas Instruments 功能描述:2 Bulk |
| LMC6772BIM/NOPB | 功能描述:校驗器 IC Dual Micropwr RRIN CMOS Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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