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MAX138CPL+ is listed in the ADCs/DACs - Special Purpose range at ChipApex. The manufacturer field lists Analog Devices Inc./Maxim Integrated. Its product description is IC ADC 3.5DIGIT 40DIP. Review the specifications below when checking this part for your BOM.
The MAX138CPL+ is a 3½-digit analog-to-digital converter (ADC) designed for direct LED display applications. It integrates a dual-slope ADC, an internal voltage reference, and a charge pump to drive common-cathode LEDs without external components. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include a resolution of 14 bits with no missing codes, a conversion rate of up to 60 conversions per second, and a typical accuracy of ±0.05%. It features a serial interface for data output and supports multiple digit drive capabilities.
The MAX138CPL+ belongs to the MAX138 family of precision ADCs. This series is characterized by its integration of signal conditioning and display driving functions into a single monolithic IC, reducing component count in low-resolution measurement systems compared to discrete solutions.
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