MAX139CPL+

ADCs/DACs - Special Purpose Overview

The MAX139CPL+ is a 3½-digit analog-to-digital converter (ADC) designed for direct LED display driving applications. It integrates a dual-slope conversion architecture, an internal reference, and a charge pump to facilitate single-supply operation. The device features direct LED drivers, eliminating the need for external driver circuitry. It operates within a temperature range of -40°C to +85°C and is housed in a 40-pin Plastic Dual In-Line Package (DIP). Key electrical specifications include a maximum linear error of 0.0015% and a maximum analog input voltage of 0.2V.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 3½-digit ADC with dual-slope architecture
• Built-in reference voltage source and charge pump
• Direct LED driver outputs for simplified interface
• Low linear error specification of 0.0015%

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Industrial process control displays
• Precision measurement instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify RoHS compliance status carefully, as existing records indicate conflicting data regarding lead content and certification for this specific part number. Confirm the package type is indeed 40-pin DIP and check for any obsolescence notices from Analog Devices before procurement planning.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a high-accuracy, low-pin-count solution for driving 7-segment displays is required without external multiplexing logic. Ensure the application supports the dual-slope conversion speed limitations compared to SAR or delta-sigma architectures.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX139 family of precision ADCs from Maxim Integrated, now part of Analog Devices. It is distinct from other MAX139 variants such as the MAX139CMH+, which is a specialized DAS/ADC in a 44-MQFP package, and the MAX1396 series, which are high-speed sampling ADCs.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate pin-compatible alternatives only after verifying functional equivalence of the integrated charge pump and LED driver capabilities.