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ICL7139 - (ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter

Datasheet Summary

Description

The Intersil ICL7139 and ICL7149 are high performance, low power, auto-ranging digital multimeter lCs.

Unlike other autoranging multimeter ICs, the ICL7139 and ICL7149 always display the result of a conversion on the correct range.

There is no “range hunting” noticeable in the display.

Features

  • 13 Ranges - ICL7139 - 4 DC Voltage 400mV, 4V, 40V, 400V - 1 AC Voltage 400V - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ.
  • 18 Ranges - ICL7149 - 4 DC Voltage 400mV, 4V, 40V, 400V - 2 AC Voltage with Optional AC Circuit - 4 DC Current 4mA, 40mA, 400mA, 4A - 4 AC Current with Optional AC Circuit - 4 Resistance 4kΩ , 40kΩ , 400kΩ , 4MΩ.
  • Autoranging - First Reading is Always on Correct Range.
  • On-Chip Duplex LCD Display Drive Includin.

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Datasheet preview – ICL7139

Datasheet Details

Part number ICL7139
Manufacturer Intersil Corporation
File Size 139.71 KB
Description (ICL7139 / ICL7149) 33/4 Digit Autoranging Multimeter
Datasheet download datasheet ICL7139 Datasheet
Additional preview pages of the ICL7139 datasheet.

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Full PDF Text Transcription

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ICL7139, ICL7149 August 1997 3 3/4 Digit, Autoranging Multimeter Description The Intersil ICL7139 and ICL7149 are high performance, low power, auto-ranging digital multimeter lCs. Unlike other autoranging multimeter ICs, the ICL7139 and ICL7149 always display the result of a conversion on the correct range. There is no “range hunting” noticeable in the display. The unit will autorange between the four different ranges. A manual switch is used to select the 2 high group ranges. DC current ranges are 4mA and 40mA in the low current group, and 400mA and 4A in the high current group. Resistance measurements are made on 4 ranges, which are divided into two groups. The low resistance ranges are 4/40kΩ . The high resistance ranges are 0.4/4MΩ . Resolution on the lowest range is 1Ω .
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