- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377667 > LT1011ACH (LINEAR TECHNOLOGY CORP) Voltage Comparator PDF資料下載
參數(shù)資料
| 型號(hào)： | LT1011ACH |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Voltage Comparator |
| 中文描述： | COMPARATOR, 1000 uV OFFSET-MAX, 150 ns RESPONSE TIME, MBCY8 |
| 封裝： | METAL CAN, TO-5, 8 PIN |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 205K |
| 代理商： | LT1011ACH |
7
LT1011/LT1011A
of the comparator, but require a minimuminput signal
slew rate to be effective. DC hysteresis works for all
input slew rates, but creates a shift in offset voltage
dependent on the previous condition of the input sig-
nal. The circuit shown in Figure 1 is an excellent
compromise between AC and DC hysteresis.
APPLICATIO
S I
N
FOR
ATIO
U
W
U
+
–
+
3
7
1
5
6
8
LT1011
INPUTS
2
μ
F
TANT
4
2
–15V
C1
0.003
μ
F
0.1
μ
F
1011 F01
R2
15M
15V
R
L
OUTPUT
Figure 1. Comparator with Hysteresis
This circuit is especially useful for general purpose
comparator applications because it does not force any
signals directly back onto the input signal source.
Instead, it takes advantage of the unique properties of
the BALANCE pins to provide extremely fast, clean
output switching even with low frequency input sig-
nals in the millivolt range. The 0.003
μ
F capacitor from
Pin 6 to Pin 8 generates AC hysteresis because the
voltage on the BALANCE pins shifts slightly, depend-
ing on the state of the output. Both pins move about
4mV. If one pin (6) is bypassed, AC hysteresis is
created. It is only a few millivolts referred to the in-
puts, but is sufficient to switch the output at nearly the
maximum speed of which the comparator is capable.
To prevent problems from low values of input slew
rate, a slight amount of DC hysteresis is also used. The
sensitivity of the BALANCE pins to current is about
0.5mV input referred offset for each microampere of
BALANCE pin current. The 15M resistor tied from
OUTPUT to Pin 5 generates 0.5mV DC hysteresis. The
combination of AC and DC hysteresis creates clean
oscillation-free switching with very small input errors.
Figure 2 plots input referred error versus switching
frequency for the circuit as shown.
Note that at low frequencies, the error is simply the DC
hysteresis, while at high frequencies, an additional
TIME/FREQUENCY (
μ
s)
1
2
I
3
4
5
6
10
100
1000
1011 F02
1
0
–1
–2
7
8
C8 TO C6 = 0.003
μ
F
(50kHz)
(5kHz)
OUTPUT “HI” TO “LO”
OUTPUT “LO” TO “HI”
Figure 2. Input Offset Voltage vs Time to Last Transition
error is created by the AC hysteresis. The high
frequency error can be reduced by reducing C
H
, but
lower values may not provide clean switching with
very low slew rate input signals.
Input Protection
The inputs to the LT1011 are particularly suited to general
purpose comparator applications because large differen-
tial and/or common mode voltages can be tolerated with-
out damage to the comparator. Either or both inputs can
be raised 40V above the negative supply, independent of
the positive supply voltage Internal forward biased diodes
will conduct when the inputs are taken below the negative
supply. In this condition, input current must be limited to
1mA. If very large (fault) input voltages must be accom-
modated, series resistors and clamp diodes should be
used (see Figure 3).
–
+
LT1011
R4*
300
R3*
300
3
2
INPUTS
D1 TO D4: 1N4148
MAY BE ELIMINATED FOR I
FAULT
≤
1mA
SELECT ACCORDING TO ALLOWABLE
FAULT CURRENT AND POWER DISSIPATION
*
**
R1**
V
+
V
–
R2**
8
D2
4
1011 F03
D4
D1
D3
Figure 3. Limiting Fault Input Currents
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1011ACN8 | Voltage Comparator |
| LT1011AMH | Counter Display Panel; Number of Digits/Alpha:6 |
| LT1011AMJ8 | Voltage Comparator |
| LT1011CH | Controllers, Triac trigger modules; For Use With:Veeder-Root Series 7990 |
| LT1011CJ8 | Voltage Comparator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1011ACJ8 | 制造商:Linear Technology 功能描述:Comparator Single ±15V/30V 8-Pin CDIP |
| LT1011ACJG | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LT1011ACL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Comparator |
| LT1011ACN8 | 功能描述:IC VOLTAGE COMPARATOR 5V 8-DIP RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):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(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）: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 |
| LT1011ACN8#PBF | 功能描述:IC VOLTAGE COMPARATOR 5V 8-DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，開路集電極，TTL 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:7mV @ 5V 電流 - 輸入偏壓（最小值）:0.25µA @ 5V 電流 - 輸出（標(biāo)準(zhǔn)）:84mA @ 5V 電流 - 靜態(tài)（最大值）:120µA CMRR, PSRR（標(biāo)準(zhǔn)）:- 傳輸延遲（最大）:600ns 磁滯:- 工作溫度:-40°C ~ 85°C 封裝/外殼:SC-74A，SOT-753 安裝類型:表面貼裝 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1268 (CN2011-ZH PDF) 其它名稱:*LMV331M5*LMV331M5/NOPBLMV331M5CT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。