Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC1842 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC1842
Description  Ultralow Power Dual Comparators with Reference
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1842 Datasheet(HTML) 7 Page - Linear Technology

Back Button LTC1842_15 Datasheet HTML 3Page - Linear Technology LTC1842_15 Datasheet HTML 4Page - Linear Technology LTC1842_15 Datasheet HTML 5Page - Linear Technology LTC1842_15 Datasheet HTML 6Page - Linear Technology LTC1842_15 Datasheet HTML 7Page - Linear Technology LTC1842_15 Datasheet HTML 8Page - Linear Technology LTC1842_15 Datasheet HTML 9Page - Linear Technology LTC1842_15 Datasheet HTML 10Page - Linear Technology LTC1842_15 Datasheet HTML 11Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 12 page
background image
7
LTC1841/LTC1842/LTC1843
APPLICATIONS INFORMATION
The LTC1841/LTC1842/LTC1843 are dual micropower
comparators with a built-in 1.182V reference (LTC1842/
LTC1843). Features include programmable hysteresis,
wide supply voltage range (2V to 11V) and the ability for
the reference to drive up to a 0.01
µF capacitor without
oscillation. The comparators’ open-drain outputs can typi-
cally sink greater than 20mA and the supply current
glitches that normally occur when switching logic states
have been eliminated.
Power Supplies
The comparators operate from a single 2V to 11V (2.5V to
11V for LTC1842/LTC1843) or dual
±1V to ±5.5V supply
(
±1.25V to ±5.5V for LTC1842/LTC1843). If the reference
output is required to source more than 1mA or the supply
source impedance is high, V + should be bypassed with a
0.1
µF capacitor.
Comparator Inputs
The comparators’ input can swing from the negative
supply V to within 1.3V (max) of the positive supply V +.
The input can be forced 300mV below V or above V +
without damage and the typical input leakage current is
only
±10pA.
Comparator Outputs
Each comparator output is an open-drain pull-down to V
typically capable of sinking greater than 20mA. The low
output leakage current while in three-state mode allows a
high value pull-up resistor to be used. The open-drain
outputs can be wire OR-ed or used in level shifting
applications.
Voltage Reference
The internal bandgap reference has an output voltage of
1.182V referenced to V . The reference accuracy is 1.5%
from – 40
°C to 85°C. It can typically source greater than
1mA and sink up to 10
µA with a 5V supply. The reference
can drive a bypass capacitor of up to 0.01
µF without
oscillation. By inserting a series resistor, capacitance
values up to 100
µF can be used (Figure 1).
Figure 1. Damping the Reference Output
Figure 3 shows the bypassed reference output with a
square wave applied to the V + pin. Resistors R2 and R3 set
a 10mV hysteresis voltage band while R1 damps the
reference response. Note that the comparator output
doesn’t trip.
CAPACITOR VALUE (
µF)
0.001
0.1
10
0.01
0.1
10
1
1841/43 F02
1
100
Figure 2. Damping Resistance vs Bypass Capacitor Value
LTC1843
V
REF
R1
C1
REFERENCE
OUTPUT
1841/43 F01
Figure 2 shows the resistor value required for different
capacitor values to achieve critical damping. Bypassing
the reference can help prevent false tripping of the com-
parators by preventing glitches on V + or reference load
transients from disturbing the reference output voltage.


Similar Part No. - LTC1842_15

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1842C LINER-LTC1842C Datasheet
249Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1842CS8 LINER-LTC1842CS8 Datasheet
249Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1842I LINER-LTC1842I Datasheet
249Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1842IS8 LINER-LTC1842IS8 Datasheet
249Kb / 12P
   Ultralow Power Dual Comparators with Reference
More results

Similar Description - LTC1842_15

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC1841 LINER-LTC1841_15 Datasheet
232Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1843 LINER-LTC1843_15 Datasheet
232Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1841 LINER-LTC1841 Datasheet
249Kb / 12P
   Ultralow Power Dual Comparators with Reference
LTC1444 LINER-LTC1444_15 Datasheet
237Kb / 14P
   Ultralow Power Quad Comparators with Reference
LTC1443 LINER-LTC1443 Datasheet
176Kb / 12P
   Ultralow Power Quad Comparators with Reference
LTC1443 LINER-LTC1443_15 Datasheet
237Kb / 14P
   Ultralow Power Quad Comparators with Reference
LTC1445 LINER-LTC1445_15 Datasheet
237Kb / 14P
   Ultralow Power Quad Comparators with Reference
LTC1440 LINER-LTC1440 Datasheet
268Kb / 12P
   Ultralow Power Single/Dual Comparator with Reference
LTC1441 LINER-LTC1441_15 Datasheet
258Kb / 16P
   Ultralow Power Single/Dual Comparator with Reference
LTC1440 LINER-LTC1440_07 Datasheet
248Kb / 16P
   Ultralow Power Single/Dual Comparator with Reference
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


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