Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LMV339MT Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LMV339MT
Description  General Purpose, Low Voltage, TinyPack Comparators
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMV339MT Datasheet(HTML) 7 Page - National Semiconductor (TI)

Back Button LMV339MT Datasheet HTML 3Page - National Semiconductor (TI) LMV339MT Datasheet HTML 4Page - National Semiconductor (TI) LMV339MT Datasheet HTML 5Page - National Semiconductor (TI) LMV339MT Datasheet HTML 6Page - National Semiconductor (TI) LMV339MT Datasheet HTML 7Page - National Semiconductor (TI) LMV339MT Datasheet HTML 8Page - National Semiconductor (TI) LMV339MT Datasheet HTML 9Page - National Semiconductor (TI) LMV339MT Datasheet HTML 10Page - National Semiconductor (TI) LMV339MT Datasheet HTML 11Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 21 page
background image
Application Circuits
Basic Comparator
A basic comparator circuit is used for converting analog sig-
nals to a digital output. The LMV331/393/339 have an
open-collector output stage, which requires a pull-up resistor
to a positive supply voltage for the output to switch properly.
When the internal output transistor is off, the output voltage
will be pulled up to the external positive voltage.
The output pull-up resistor should be chosen high enough so
as to avoid excessive power dissipation yet low enough to
supply enough drive to switch whatever load circuitry is used
on the comparator output. On the LMV331/393/339 the
pull-up resistor should range between 1k to 10k
Ω.
The comparator compares the input voltage (V
in)atthe
non-inverting pin to the reference voltage (V
ref) at the invert-
ing pin. If V
in is less than Vref, the output voltage (Vo)isatthe
saturation voltage. On the other hand, if V
in is greater than
V
ref, the output voltage (Vo)isatVcc..
Comparator with Hysteresis
The basic comparator configuration may oscillate or produce
a noisy output if the applied differential input voltage is near
the comparator’s offset voltage. This usually happens when
the input signal is moving very slowly across the compara-
tor’s switching threshold. This problem can be prevented by
the addition of hysteresis or positive feedback.
Inverting Comparator with Hysteresis
The inverting comparator with hysteresis requires a three re-
sistor network that are referenced to the supply voltage V
cc
of the comparator. When Vin at the inverting input is less
than V
a, the voltage at the non-inverting node of the com-
parator (V
in < Va), the output voltage is high (for simplicity
assume V
o switches as high as Vcc). The three network re-
sistors can be represented as R
1//R3 in series with R2. The
lower input trip voltage V
a1 is defined as
When V
in is greater than Va (Vin Va), the output voltage is
low very close to ground. In this case the three network re-
sistors can be presented as R
2//R3 in series with R1. The up-
per trip voltage V
a2 is defined as
The total hysteresis provided by the network is defined as
∆V
a = Va1 -Va2
To assure that the comparator will always switch fully to V
cc
and not be pulled down by the load the resistors values
should be chosen as follow:
R
pull-up << Rload
and R
1 > Rpull-up.
DS100080-26
DS100080-4
FIGURE 1. Basic Comparator
www.national.com
7


Similar Part No. - LMV339MT

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...
LMV339MT NSC-LMV339MT Datasheet
504Kb / 20P
   General Purpose, Low Voltage, Tiny Pack Comparators
logo
Texas Instruments
LMV339MT TI1-LMV339MT Datasheet
483Kb / 22P
[Old version datasheet]   Quad General Purpose, Low Voltage, Tiny Pack Comparators
LMV339MT TI-LMV339MT Datasheet
1Mb / 32P
[Old version datasheet]   LMV331-N Single LMV393-N Dual LMV339-N Quad General Purpose, Low Voltage, Tiny
LMV339MT TI-LMV339MT Datasheet
1Mb / 32P
[Old version datasheet]   LMV331-N Single / LMV393-N Dual / LMV339-N Quad General Purpose, Low Voltage, Tiny Pack Comparators
LMV339MT TI1-LMV339MT Datasheet
1Mb / 38P
[Old version datasheet]   General-Purpose, Low-Voltage, Tiny Pack Comparators
More results

Similar Description - LMV339MT

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
LMV331-Q1 TI1-LMV331-Q1_14 Datasheet
779Kb / 15P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
LMV331-Q1 TI-LMV331-Q1 Datasheet
297Kb / 12P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
LMV331 TI-LMV331_11 Datasheet
1Mb / 29P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
LMV339IPWRG4 TI-LMV339IPWRG4 Datasheet
1Mb / 30P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
LMV393QDR TI-LMV393QDR Datasheet
764Kb / 14P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
logo
STMicroelectronics
LMV331 STMICROELECTRONICS-LMV331_11 Datasheet
610Kb / 17P
   General-purpose low voltage comparators
logo
Texas Instruments
LMV331 TI1-LMV331_14 Datasheet
1Mb / 31P
[Old version datasheet]   GENERAL-PURPOSE LOW-VOLTAGE COMPARATORS
LMV331 TI1-LMV331_15 Datasheet
1Mb / 39P
[Old version datasheet]   Quad General-purpose Low-voltage Comparators
logo
Maxim Integrated Produc...
MAX9647 MAXIM-MAX9647_12 Datasheet
2Mb / 11P
   General-Purpose, Low-Voltage, Tiny Pack Comparators
Rev 1; 1/12
logo
Texas Instruments
LMV331-N TI1-LMV331-N_15 Datasheet
1Mb / 38P
[Old version datasheet]   General-Purpose, Low-Voltage, Tiny Pack 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


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