Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

MCP6547T-I/SL Datasheet(PDF) 15 Page - Microchip Technology

Part # MCP6547T-I/SL
Description  Open-Drain Output Sub-Microamp Comparators
Download  32 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP6547T-I/SL Datasheet(HTML) 15 Page - Microchip Technology

Back Button MCP6547T-I/SL Datasheet HTML 11Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 12Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 13Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 14Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 15Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 16Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 17Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 18Page - Microchip Technology MCP6547T-I/SL Datasheet HTML 19Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 15 / 32 page
background image
© 2006 Microchip Technology Inc.
DS21714E-page 15
MCP6546/6R/6U/7/8/9
EQUATION 4-1:
Using this simplified circuit, the trip voltage can be
calculated using the following equation:
EQUATION 4-2:
Figure 2-21 and Figure 2-24 can be used to determine
typical values for VOL. This voltage is dependent on the
output current IOL as shown in Figure 4-4. This current
can be determined using the equation below:
EQUATION 4-3:
VOH can be calculated using the equation below:
EQUATION 4-4:
As explained in Section 4.1 “Comparator Inputs”, it
is important to keep the non-inverting input below
VDD+0.3V when VPU > VDD.
4.5
Supply Bypass
With this family of comparators, the power supply pin
(VDD for single supply) should have a local bypass
capacitor (i.e., 0.01 µF to 0.1 µF) within 2 mm for good
edge rate performance.
4.6
Capacitive Loads
Reasonable capacitive loads (e.g., logic gates) have
little impact on propagation delay (see Figure 2-27).
The supply current increases with increasing toggle
frequency
(Figure 2-30),
especially
with
higher
capacitive loads.
4.7
Battery Life
In order to maximize battery life in portable
applications, use large resistors and small capacitive
loads. Avoid toggling the output more than necessary.
Do not use Chip Select (CS) too frequently in order to
conserve power. Capacitive loads will draw additional
power at start-up.
4.8
PCB Surface Leakage
In applications where low input bias current is critical,
PCB (Printed Circuit Board) surface leakage effects
need to be considered. Surface leakage is caused by
humidity, dust or other contamination on the board.
Under low-humidity conditions, a typical resistance
between nearby traces is 1012
Ω. A 5V difference
would cause 5 pA of current to flow. This is greater
than the MCP6546/6R/6U/7/8/9 family’s bias current at
25°C (1 pA, typ.).
The easiest way to reduce surface leakage is to use a
guard ring around sensitive pins (or traces). The guard
ring is biased at the same voltage as the sensitive pin.
An example of this type of layout is shown in
Figure 4-7.
FIGURE 4-7:
Example Guard Ring Layout
for Inverting Circuit.
1.
Inverting Configuration (Figures 4-4 and 4-7):
a.
Connect the guard ring to the non-inverting
input pin (VIN+). This biases the guard ring
to the same reference voltage as the
comparator (e.g., VDD/2 or ground).
b.
Connect the inverting pin (VIN–) to the input
pad without touching the guard ring.
R23
R2R3
R2 R3
+
------------------
=
V23
R3
R2 R3
+
------------------ V
DD
×
=
VTHL
VPU
R23
R23 RF RPU
++
----------------------------------------
⎝⎠
⎜⎟
⎛⎞
V23
RF RPU
+
R23 RF RPU
++
---------------------------------------
⎝⎠
⎛⎞
+
=
VTLH
VOL
R23
R23 RF
+
-----------------------
⎝⎠
⎜⎟
⎛⎞
V23
RF
R23 RF
+
----------------------
⎝⎠
⎛⎞
+
=
VTLH = trip voltage from low to high
VTHL = trip voltage from high to low
IOL
IPU IRF
+
=
IOL
VPU VOL
RPU
--------------------------
⎝⎠
⎛⎞
V23 VOL
R23 RF
+
------------------------
⎝⎠
⎛⎞
+
=
VOH
VPU V23
()
R23 RF
+
R23 RF RPU
++
--------------------------------------
⎝⎠
⎛⎞
×
=
Guard Ring
V
SS
VIN-VIN+


Similar Part No. - MCP6547T-I/SL

ManufacturerPart #DatasheetDescription
logo
Microchip Technology
MCP6547T-I/MS MICROCHIP-MCP6547T-I/MS Datasheet
1Mb / 44P
   Open-Drain Output Sub-Microamp Comparators
11/29/11
More results

Similar Description - MCP6547T-I/SL

ManufacturerPart #DatasheetDescription
logo
Microchip Technology
MCP6546 MICROCHIP-MCP6546_12 Datasheet
1Mb / 44P
   Open-Drain Output Sub-Microamp Comparators
11/29/11
MCP6549 MICROCHIP-MCP6549 Datasheet
625Kb / 28P
   Open-Drain Output Sub-Microamp Comparators
2003
MCP6541 MICROCHIP-MCP6541 Datasheet
512Kb / 28P
   Push-Pull Output Sub-Microamp Comparators
07/28/03
PIC16F648A-I MICROCHIP-PIC16F648A-I Datasheet
1Mb / 34P
   Push-Pull Output Sub-Microamp Comparators
08/29/06
MCP6541 MICROCHIP-MCP6541_11 Datasheet
803Kb / 46P
   Push-Pull Output Sub-Microamp Comparators
2011
MCP6541 MICROCHIP-MCP6541_06 Datasheet
1Mb / 34P
   Push-Pull Output Sub-Microamp Comparators
2006
logo
Texas Instruments
TLV3402 TI-TLV3402 Datasheet
257Kb / 14P
[Old version datasheet]   FAMILY OF NANOPOWER OPEN DRAIN OUTPUT COMPARATORS
TLV3401 TI1-TLV3401_13 Datasheet
759Kb / 14P
[Old version datasheet]   FAMILY OF NANOPOWER OPEN DRAIN OUTPUT COMPARATORS
logo
3PEAK INC.
TP1945 3PEAK-TP1945 Datasheet
655Kb / 20P
   1.8V Micropower, RRIO, Open-Drain Output Comparators
LMV331TP 3PEAK-LMV331TP Datasheet
1Mb / 12P
   General Purpose, 1.8V, RRI, Open-Drain Output Comparators
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


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