ICL7126

低功耗、3 1/2位A/D转换器

新设计推荐使用ICL7136


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说明

The Maxim ICL7126 is a monolithic analog to digital converter with very high input impedance. On-board active components include segment drivers, segment decoders, voltage reference and a clock circuit. The ICL7126 directly drives a non-multiplexed liquid crystal (LCD) display, requiring no external display drive circuitry. Significantly reduced power consumption makes the ICL7126 a superior device, especially for portable systems.

Versatility and accuracy are inherent features of this converter. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input and reference are particularly useful when making ratiometric measurements (ohms or bridge transducers), and the zero-integrator phase in Maxim's ICL7126 eliminates overrange hangover and hysteresis effects. The Zero Integrator phase also allows the use of larger auto zero capacitors reducing noise further. Finally, this device offers high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1μV/°C.
ICL7126:典型工作电路 ICL7126:典型工作电路 放大+

关键特性

  • Improved 2nd Source!
  • Power dissipation guaranteed less than 1mW-9V battery life 3000 hours typical
  • Guaranteed first reading recovery from overrange
  • Zero Input Gives Zero Reading
  • Drives LCD Displays Directly
  • Low Noise (15μV p-p) without hysteresis or overrange hangover
  • True Differential Reference and Input
  • Monolithic, Low Power CMOS

应用

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Part NumberResolution
(±Counts)
Conv. Rate
(ksps)
Data BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Package/PinsBudgetary
Price
maxnominalmaxmaxSee Notes
ICL7126 20000.037-SegmentDiff. Only2.893.5
PDIP/40
PLCC/44
$8.63 @500
查看所有Display-Oriented ADCs (28)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

技术资料

设计指南 2102 Delta-Sigma ADCs Replace Integrating ADCs for Panel Meters
设计指南 1041 Understanding Integrating ADCs

质量和环境数据

申请可靠性报告: ICL7126 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • ICL7126CPL+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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