Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LT1011AMJ8 Datasheet(PDF) 7 Page - Linear Technology

Part # LT1011AMJ8
Description  Voltage Comparator
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1011AMJ8 Datasheet(HTML) 7 Page - Linear Technology

Back Button LT1011AMJ8 Datasheet HTML 3Page - Linear Technology LT1011AMJ8 Datasheet HTML 4Page - Linear Technology LT1011AMJ8 Datasheet HTML 5Page - Linear Technology LT1011AMJ8 Datasheet HTML 6Page - Linear Technology LT1011AMJ8 Datasheet HTML 7Page - Linear Technology LT1011AMJ8 Datasheet HTML 8Page - Linear Technology LT1011AMJ8 Datasheet HTML 9Page - Linear Technology LT1011AMJ8 Datasheet HTML 10Page - Linear Technology LT1011AMJ8 Datasheet HTML 11Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 16 page
background image
7
LT1011/LT1011A
of the comparator, but require a
minimum input 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.
APPLICATIONS INFORMATION
+
3
7
1
5
6
8
LT1011
INPUTS
2
µF
TANT
4
2
–15V
C1
0.003
µF
0.1
µF
1011 F01
R2
15M
15V
RL
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
µF 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 (
µs)
1
2
3
4
5
6
10
100
1000
1011 F02
1
0
–1
–2
7
8
C8 TO C6 = 0.003
µF
(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 CH, 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 IFAULT ≤ 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


Similar Part No. - LT1011AMJ8

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LT1011AMJ8 LINER-LT1011AMJ8 Datasheet
257Kb / 16P
   Voltage Comparator
LT1011AMJ8 LINER-LT1011AMJ8 Datasheet
239Kb / 20P
   Pin Compatible with LM111 Series Devices
More results

Similar Description - LT1011AMJ8

ManufacturerPart #DatasheetDescription
logo
Mitsubishi Electric Sem...
M51206TL MITSUBISHI-M51206TL Datasheet
115Kb / 4P
   VOLTAGE COMPARATOR?
logo
Linear Technology
LT1011A LINER-LT1011A_15 Datasheet
294Kb / 20P
   Voltage Comparator
logo
Austin Semiconductor
AS111 AUSTIN-AS111 Datasheet
2Mb / 21P
   Voltage Comparator
AS111R AUSTIN-AS111R Datasheet
1Mb / 22P
   Voltage Comparator
logo
National Semiconductor ...
LM111JAN NSC-LM111JAN Datasheet
798Kb / 26P
   Voltage Comparator
logo
Linear Technology
RH1011 LINER-RH1011 Datasheet
144Kb / 4P
   Voltage Comparator
logo
JSC ALFA.
AS527 ALFA-AS527 Datasheet
207Kb / 3P
   Voltage comparator
logo
National Semiconductor ...
MDLM111-X NSC-MDLM111-X Datasheet
303Kb / 17P
   VOLTAGE COMPARATOR
logo
NXP Semiconductors
NE527 PHILIPS-NE527 Datasheet
131Kb / 5P
   Voltage comparator
August 31, 1994
logo
Linear Technology
RH111 LINER-RH111 Datasheet
143Kb / 4P
   Voltage Comparator
RH1011 LINER-RH1011_15 Datasheet
70Kb / 2P
   Voltage Comparator
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com