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MAX138CPL+

Display Drive AD Converter, LCD Display, 3.5 Digits, Differential, Single, 2.5 V

MAXIM INTEGRATED PRODUCTS MAX138CPL+
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Manufacturer Part No:
MAX138CPL+
Order Code:
2513605
Product Range
LCD/LED Display ADCs
Technical Datasheet:
MAX138CPL+   Datasheet
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Product Range Selector (LCD/LED Display ADCs)

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Product Overview

The MAX138CPL+ is a 3.5 digit analogue to digital converter (ADC) with reference, charge pump and onboard LCD display drivers in 40 pin DIP package. The charge pump inverter allows the device to measure both positive and negative input voltages while operating from single power supply voltages from 2.5V to 7V. The operating circuits of MAX138 are similar to those of ICL7136 except the MAX138 has an internal oscillator and an external charge pump capacitor connected to pins 38 and 40. It is used in 5V powered panel meters, 3V powered DMMs and digital thermometers.
  • V+ current of 200µA at TA = 25°C
  • Operating temperature range from 0°C to 70°C
  • Charge pump voltage inverter generates a negative supply voltages
  • Internal bandgap reference
  • Peak to peak segment drive voltage of 5V and test pin voltage of 5V with respect to V+
  • ±000.0 digital reading (zero input reading) at TA = 25°C
  • 999/1000 digital reading (ratiometric reading) at TA = 25°C
  • Rollover error of ±0.2counts at TA = 25°C and linearity of ±0.2counts
  • CMRR of 50µV/V and noise of 15µV
  • ±20ppm/°C temperature coefficient of analogue common with respect to positive supply

Applications

Signal Processing, Portable Devices

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Product Information

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3.5 Digits

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-

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Differential

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-

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Single

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2.5V

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7V

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DIP

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40Pins

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0°C

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70°C

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LCD/LED Display ADCs

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-

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MSL 1 - Unlimited
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Technical Docs (1)

CAD Downloads

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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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More stock available to supplier lead times which is approximately 7/03/22

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$28.64 ( $31.50  Inc. GST)

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