|
|
PDF SM73403 Data sheet ( Hoja de datos )
| Número de pieza | SM73403 | |
| Descripción | Single General Purpose Voltage Comparator | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SM73403 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
www.DataSheet.co.kr
SM73403
SM73403 Single General Purpose Voltage Comparator
Literature Number: SNOSBA0
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Application Notes
Basic Comparators
A comparator is quite often used to convert an analog signal
to a digital signal. The comparator compares an input voltage
(VIN) at the non-inverting pin to the reference voltage (VREF)
at the inverting pin. If VIN is less than VREF the output (VO) is
low (VOL). However, if VIN is greater than VREF, the output
voltage (VO) is high (VOH). Refer to Figure 2.
When input voltage (VIN) at the inverting node is less than
non-inverting node (VT), the output is high. The equivalent
circuit for the three resistor network is R1 in parallel with R3
and in series with R2. The lower threshold voltage VT1 is cal-
culated by:
VT1 = ((VS R2) / (((R1 R3) / (R1 + R3)) + R2))
When VIN is greater than VT, the output voltage is low. The
equivalent circuit for the three resistor network is R2 in parallel
with R3 and in series with R1. The upper threshold voltage
VT2 is calculated by:
VT2 = VS ((R2 R3) / (R2 + R3)) / (R1 + ((R2 R3) / (R2 + R3)))
The hysteresis is defined as
ΔVIN = VT1 – VT2
30159710
FIGURE 2. Basic Comparator
30159711
Hysteresis
The basic comparator configuration may oscillate or produce
a noisy output if the applied differential input is near the
comparator’s input offset voltage. This tends to occur when
the voltage on the input is equal or very close to the other input
voltage. Adding hysteresis can prevent this problem. Hys-
teresis creates two switching thresholds (one for the rising
input voltage and the other for the falling input voltage). Hys-
teresis is the voltage difference between the two switching
thresholds. When both inputs are nearly equal, hysteresis
causes one input to effectively move quickly pass the other.
Thus, effectively moving the input out of the region that oscil-
lation may occur.
For an inverting configured comparator, hysteresis can be
added with a three resistor network and positive feedback.
30159712
30159713
FIGURE 3. Inverting Configured Comparator – SM73403
www.national.com
4
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
Notes
For more National Semiconductor product information and proven design tools, visit the following Web sites at:
www.national.com
Products
Design Support
Amplifiers
www.national.com/amplifiers WEBENCH® Tools
www.national.com/webench
Audio
www.national.com/audio
App Notes
www.national.com/appnotes
Clock and Timing
www.national.com/timing
Reference Designs
www.national.com/refdesigns
Data Converters
www.national.com/adc
Samples
www.national.com/samples
Interface
www.national.com/interface Eval Boards
www.national.com/evalboards
LVDS
www.national.com/lvds
Packaging
www.national.com/packaging
Power Management
www.national.com/power
Green Compliance
www.national.com/quality/green
Switching Regulators www.national.com/switchers Distributors
www.national.com/contacts
LDOs
www.national.com/ldo
Quality and Reliability
www.national.com/quality
LED Lighting
www.national.com/led
Feedback/Support
www.national.com/feedback
Voltage References www.national.com/vref
Design Made Easy
www.national.com/easy
PowerWise® Solutions
www.national.com/powerwise Applications & Markets
www.national.com/solutions
Serial Digital Interface (SDI) www.national.com/sdi
Mil/Aero
www.national.com/milaero
Temperature Sensors
www.national.com/tempsensors SolarMagic™
www.national.com/solarmagic
PLL/VCO
www.national.com/wireless
PowerWise® Design
University
www.national.com/training
THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION
(“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY
OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO
SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS,
IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS
DOCUMENT.
TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT
NATIONAL’S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL
PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR
APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND
APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE
NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS.
EXCEPT AS PROVIDED IN NATIONAL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO
LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE
AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY
RIGHT.
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and
whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected
to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform
can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness.
National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other
brand or product names may be trademarks or registered trademarks of their respective holders.
Copyright© 2011 National Semiconductor Corporation
For the most current product information visit us at www.national.com
National Semiconductor
Americas Technical
Support Center
Email: [email protected]
Tel: 1-800-272-9959
National Semiconductor Europe
Technical Support Center
Email: [email protected]
www.national.com
National Semiconductor Asia
Pacific Technical Support Center
Email: [email protected]
National Semiconductor Japan
Technical Support Center
Email: [email protected]
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SM73403.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SM73403 | SM73403 Single General Purpose Voltage Comparator (Rev. A) |  Texas Instruments |
| SM73403 | Single General Purpose Voltage Comparator | National Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |