Datasheet Linear Technology LTC6652AHLS8-2.5 — 数据表

制造商	Linear Technology
系列	LTC6652AHLS8-2.5

精密低漂移，低噪声缓冲基准

数据表

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PDF, 561 Kb, 语言: en, 文件上传: Aug 13, 2017, 页数: 20
Precision Low Drift Low Noise Buffered Reference

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价格

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	LTC6652AHLS8-2.5#PBF
N	1
Package	LS-8 包装外形图
Package Code	LS8
Package Index	05-08-1852
Pin Count	8

参数化

Parameters / Models	LTC6652AHLS8-2.5#PBF
Export Control	no
Initial Accuracy, %	0.05
Line Reg, ppm/V	2
Load Reg, ppm/mA	20
Low Freq Noise, µVPP	2.1
Min Vin/Vout Differential, V	0.3
Operating Temperature Range, °C	-40 to 125
Output Current Range	В±5mA
Quiescent or Min Shunt Current, µA	350
Ref Vout, V	2.5
Series/Shunt	Series
Temp Co, ppm/В°C	2
Vin Max, V	13.2
Vin Min, V	2.8

生态计划

	LTC6652AHLS8-2.5#PBF
RoHS	Compliant

其他选择

LTC6652 LTC6652AHLS8-4.096 LTC6652AHLS8-5 LTC6652AHMS8-1.25 LTC6652AHMS8-2.048 LTC6652AHMS8-2.5 LTC6652AHMS8-3 LTC6652AHMS8-3.3 LTC6652AHMS8-4.096 LTC6652AHMS8-5 LTC6652BHLS8-2.5 LTC6652BHLS8-4.096 LTC6652BHLS8-5 LTC6652BHMS8-1.25 LTC6652BHMS8-2.048 LTC6652BHMS8-2.5 LTC6652BHMS8-3 LTC6652BHMS8-3.3 LTC6652BHMS8-4.096 LTC6652BHMS8-5

设计须知

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Don't Be Fooled By Voltage Reference Long-Term Drift and Hysteresis &mdash DN229
PDF, 98 Kb, 档案已发布: Apr 3, 2001
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DonвЂ™t Be Fooled by Voltage Reference Long-Term Drift
and Hysteresis вЂ“ Design Note 229
John Wright Lies About Long-Term Drift
Some manufacturers are now touting phenomenal
long-term drift speciп¬Ѓcations, based on accelerated
high temperature testing. THIS IS A DELIBERATE
LIE! Long-term drift cannot be extrapolated from
accelerated high temperature testing. The only way
long-term drift can be determined is to measure it over
the time interval of interest. The erroneous technique
produces numbers that are wildly optimistic and uses
the Arrhenius Equation to derive an acceleration factor
from elevated temperature readings. The equation is:
AF = e EA вЋ› 1 1 вЋћ
вЋњ вЂ“ вЋџ
K вЋќ T1 T2вЋ where: E A = Activation Energy (Assume 0.7)
K = BoltzmannвЂ™s Constant
T2 = Test Condition in В°Kelvin
T1 = Use Condition Temperature in В°Kelvin Equation the acceleration factor is 767 and the projected
вЂњbogusвЂќ long-term drift is 0.156ppm/1000hr at 30В°C.
For a 2.5V reference, this corresponds to a 0.39ОјV shift
after 1000 hours. This is pretty hard to determine (read
impossible) if the peak-to-peak output noise is larger …

文章

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Reliable Precision Voltage Reference with 5ppm/°C Drift is Factory Trimmed and Tested at -40°C, 25°C and 125°C &mdash LT Journal
PDF, 494 Kb, 档案已发布: Jan 1, 2009
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DESIGN FEATURESвЂ‰L Reliable Precision Voltage Reference
with 5ppm/В°C Drift is Factory Trimmed
and Tested at вЂ“40В°C, 25В°C and 125В°C
by Michael B. Anderson and Brendan Whelan The LTC6652 reference is a precision
low drift voltage reference that includes
advanced curvature compensation
circuitry and post-package trim. To
guarantee reliable performance, these
parts are tested at вЂ“40В°C, 25В°C and
125В°C to verify they meet specification
across the entire temperature range.
This comprehensive testing ensures
that the LTC6652 can be used with
confidence in demanding applications. One result of this testing is
demonstrated in Figure 1. The output
voltage versus temperature for several
randomly chosen parts shows a drift
characteristic that is consistent from
part to part. This is a result of a propriLinear Technology Magazine January 2009 Compare the Real Specs:
Is the Temperature Range
Operating or Functional? When comparing voltage references for
use in demanding environments, it is
important to know, with confidence, …
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How to Choose a Voltage Reference &mdash LT Journal
PDF, 282 Kb, 档案已发布: Mar 1, 2009
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LвЂ‰DESIGN FEATURES How to Choose a Voltage Reference
by Brendan Whelan Why Voltage References? 5V It is an analog world. All electronic
devices must in some way interact with
the вЂњrealвЂќ world, whether they are in
an automobile, microwave oven or cell
phone. To do that, electronics must be
able to map real world measurements
(speed, pressure, length, temperature)
to a measurable quantity in the electronics world (voltage). Of course, to
measure voltage, you need a standard
to measure against. That standard is
a voltage reference. The question for
any system designer is not whether he
needs a voltage reference, but rather,
which one?
A voltage reference is simply thatвЂ”a
circuit or circuit element that provides
a known potential for as long as the circuit requires it. This may be minutes,
hours or years. If a product requires
information about the world, such VIN 18k LTC1286
1
2 LT1634-4.096 0.1ВµF 3
4 VREF VCC +IN CLK вЂ“IN DOUT GND CS/SHDN 8 5V 7 …

模型线

系列: LTC6652AHLS8-2.5 (1)

LTC6652AHLS8-2.5#PBF

制造商分类

Signal Conditioning > Voltage References > Series Voltage References
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Voltage References