ICL7116

3 1/2位ADC,可直接驱动LCD显示/保持


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说明

The Maxim ICL7116 and ICL7117 are 3½ digit monolithic analog-to-digital converters. They differ from the Maxim ICL7106 and ICL7107 in that the ICL7116 and ICL7117 have a Hold pin, which makes it possible to hold or “freeze” a reading. These integrating ADCs have very high input impedances and directly drive LCD (ICL7116) and LED (ICL7117) displays.

Versatility and accuracy are inherent features of these converters. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input is particularly useful when making ratiometric measurements (ohms or bridge transducers). Maxim has added a zero-integrator phase to the ICL7116 and ICL7117, eliminating overrange hangover and hysteresis effects. Finally, these devices offer high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/°C.

ICL7116、ICL7117:引脚配置 ICL7116、ICL7117:引脚配置 放大+

关键特性

  • Improved 2nd Source!
  • Hold Pin Allows Indefinite Display Hold
  • Guaranteed First Reading Recovery from Overrange
  • On-Board Display Drive Capability—No External Circuitry Required: LCD (ICL7116), LED (ICL7117)
  • High-Impedance CMOS Differential Inputs
  • Low Noise (< 15µVP-P) Without Hysteresis or Overrange Hangover
  • Clock and Reference On-Chip
  • Zero Input Gives Zero Reading
  • True Polarity Indication for Precision Null Applications

应用

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Part NumberResolution
(±Counts)
Data BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Package/PinsBudgetary
Price
nominalminmaxmaxSee Notes
ICL7116 20007-SegmentDiff. Only2.8-93.5
PDIP/40
PLCC/44
$6.09 @1k
ICL7117 -55
MQFP/44
PDIP/40
PLCC/44
$7.92 @500
查看所有Display-Oriented ADCs (27)
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: ICL7116 
无铅封装的锡(Sn)晶须报告
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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