ICL7135

4 1/2位ADC,带有复用的BCD输出


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说明

The Maxim ICL7135 is a high precision monolithic 41/2 digit A/D converter. Dual slope conversion reliability is combined with ±1 in 20,000 count accuracy and a 2.0000V full scale capability. It features high impedance differential inputs, nearly ideal differential linearity, true ratiometric operation, auto zero and auto-polarity. The multiplexed BCD outputs and digit drivers provide easy interface to external display drivers like the Maxim ICM7211A. The only other external components needed to make precision DVM/DPMs are a reference and a clock. For more complex systems the BCD outputs are enhanced by Active-Low STROBE, OVERRANGE, UNDERRANGE, RUN/Active-Low HOLD and BUSY lines providing easy interface to microprocessors and UARTs. This interfacing capability makes the ICL7135 an ideal device for use in microprocessor based data acquisition and control systems.

The ICL7135 has auto-zero accuracy better than 10µV, zero drift of 0.5µV/°C, input bias current of 10pA max. and rollover error of less than 1 count.

ICL7135:典型工作电路 ICL7135:典型工作电路 放大+

关键特性

  • Improved 2nd Source (See our “Maxim Advantage™” Page 3)
  • ±20,000 Count Resolution
  • Guaranteed ±1 Count accuracy
  • Over-range, under-range signals for auto-range capability
  • Easy interface to UARTs and µPs
  • TTL compatible, Multiplexed BCD outputs
  • True differential input. Zero reading guaranteed for 0 volt Input
  • True polarity at zero for precise null detection
  • Monolithic CMOS Design

应用

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Part NumberResolution
(±Counts)
Data BusDiff/S.E. InputExternal VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Package/PinsBudgetary
Price
minmaxmaxSee Notes
ICL7135 20000
µP/4
UART
Diff. Only-552
MQFP/44
PDIP/28
PLCC/28
SSOP/28
$9.54 @1k
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

质量和环境数据

申请可靠性报告: ICL7135 
无铅封装的锡(Sn)晶须报告

CAD Symbols and Footprints

  • ICL7135CAI+
  • ICL7135CAI+C10176
  • ICL7135CAI+T
  • ICL7135CMH+D
  • ICL7135CPI+
  • ICL7135CPI+2
  • ICL7135CQI+
  • ICL7135CQI+T
  • 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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