Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

LM4030 Fiches technique(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
No de pièce LM4030
Description  LM4030 SOT-23 Ultra-High Precision Shunt Voltage Reference
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

LM4030 Fiches technique(HTML) 11 Page - Texas Instruments

Back Button LM4030 Datasheet HTML 7Page - Texas Instruments LM4030 Datasheet HTML 8Page - Texas Instruments LM4030 Datasheet HTML 9Page - Texas Instruments LM4030 Datasheet HTML 10Page - Texas Instruments LM4030 Datasheet HTML 11Page - Texas Instruments LM4030 Datasheet HTML 12Page - Texas Instruments LM4030 Datasheet HTML 13Page - Texas Instruments LM4030 Datasheet HTML 14Page - Texas Instruments LM4030 Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
= VERROR
10
3
VREF x ppmERROR
TD =
VREF x 'T
x 10
6 ppm
(VREF_MAX - VREF_MIN)
Temperature Range
Voltage
Temperature
VREF_MAX
VREF_MIN
LM4030
www.ti.com
SNVS552B – MARCH 2008 – REVISED APRIL 2013
TEMPERATURE COEFFICIENT
Temperature drift is defined as the maximum deviation in output voltage over the temperature range. This
deviation over temperature may be illustrated as shown in Figure 25.
Figure 25. Illustrative VREF vs Temperature Profile
Temperature coefficient may be expressed analytically as the following:
where
TD = Temperature drift
VREF = Nominal preset output voltage
VREF_MIN = Minimum output voltage over operating temperature range
VREF_MAX = Maximum output voltage over operating temperature range
ΔT = Operating temperature range
(3)
The LM4030 features a low temperature drift of 10ppm (max) to 30ppm (max), depending on the grade.
DYNAMIC OFFSET CANCELLATION AND LONG TERM STABILITY
Aside from initial accuracy and drift performance, other specifications such as thermal hysteresis and long-term
stability can affect the accuracy of a voltage reference, especially over the lifetime of the application. The
reference voltage can also shift due to board stress once the part is mounted onto the PCB and during
subsequent thermal cycles. Generally, these shifts in VREF arise due to offsets between matched devices within
the regulation loop. Both passive and active devices naturally experience drift over time and stress and
temperature gradients across the silicon die also generate offset. The LM4030 incorporates a dynamic offset
cancellation scheme which compensates for offsets developing within the regulation loop. This gives the LM4030
excellent long-term stability (40 ppm typical) and thermal hysteresis performance (75ppm typical), as well as
substantial immunity to PCB stress effects, despite being packaged in a tiny SOT-23.
EXPRESSION OF ELECTRICAL CHARACTERISTICS
Electrical characteristics are typically expressed in mV, ppm, or a percentage of the nominal value. Depending
on the application, one expression may be more useful than the other. To convert one quantity to the other one
may apply the following:
ppm to mV error in output voltage:
where
VREF is in volts (V) and VERROR is in milli-volts (mV)
(4)
Copyright © 2008–2013, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Links: LM4030


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
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