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3 1/2位ADC,可直接驱动LCD显示/保持

产品详情

主要特征

应用/用途

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 2000
# Input Channels 1
Data Bus 7-Segment
Diff/S.E. Input Diff. Only
Internal VREF (V) (nominal) 2.8
External VREF (V) (max) 9
Bipolar VIN (±V) (max) 3.5
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
6.78
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参量

Parametric specs for Display-Oriented ADCs
Resolution (±Counts) 2000
# Input Channels 1
Data Bus 7-Segment
Diff/S.E. Input Diff. Only
Internal VREF (V) (nominal) 2.8
External VREF (V) (max) 9
Bipolar VIN (±V) (max) 3.5
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
6.78

主要特征

  • 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/用途

  • Conductance
  • Current
  • Material Thickness
  • Pressure
  • Resistance
  • Speed
  • Temperature
  • Voltage

描述

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.

简化框图

ICL7116、ICL7117:引脚配置 ICL7116、ICL7117:引脚配置 Zoom icon

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心