ICL7117CPL+

The ICL7117CPL+ is a 3½ digit ADC with display hold in 40 pin DIP package. This integrating ADC has very high input impedances and directly drives LED display. 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 is particularly useful when making ratiometric measurements (ohms or bridge transducers). Analog Deviceshas added a zero-integrator phase to the ICL7117, eliminating overrange hangover and hysteresis effects. Finally, this device offer high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/°C. This device can be used in a wide range of digital panel meter applications.

• Supply voltage range is 0V to 5V
• Operating temperature range from 0°C to 70°C
• Hold pin allows indefinite display hold
• On-board display drive capability and no external circuitry required
• High impedance CMOS differential inputs
• Low noise (<lt/> 15μVP-P) without hysteresis or overrange hangover
• Clock and reference on-chip
• Zero input gives zero reading
• True polarity indication for precision null applications

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