MAX136CMH+D

ADCs/DACs - Special Purpose Overview

The MAX136CMH+D is a low-power, 3½-digit analog-to-digital converter (ADC) designed for direct driving of nonmultiplexed liquid crystal displays. It features high-impedance CMOS differential inputs and integrates an on-chip clock and reference. The device utilizes dual-slope conversion to reject industrial interference and includes a dedicated Hold pin to freeze display readings without increasing power dissipation. Operating from a single 9V supply, it guarantees power dissipation below 1mW, enabling typical battery life exceeding 3000 hours in portable applications.

ADCs/DACs - Special Purpose Feature Summary

• Integrated LCD drive capability eliminates the need for external display driver circuitry
• Dedicated Hold input allows indefinite freezing of digital readouts while maintaining low power consumption
• Dual-slope conversion technique provides automatic rejection of common-mode interference signals
• High accuracy with rollover error less than one count and zero reading drift under 1µV/°C

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Portable battery-powered measurement systems
• Precision null applications requiring true polarity indication
• Direct measurement of bridge transducer outputs or load cells

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status via official manufacturer documentation. Ensure storage conditions account for moisture sensitivity levels specified in the datasheet. Validate package integrity upon receipt to prevent damage to the MQFP-44 leads.

ADCs/DACs - Special Purpose Selection Notes

Select this component for designs requiring direct LCD interfacing without multiplexing. Verify that the 9V supply voltage aligns with system constraints. Consider the MQFP-44 footprint dimensions during PCB layout. Evaluate thermal performance against the 800mW dissipation rating when mounting all leads to the PCB.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX136 series of 3½-digit ADCs. It serves as a low-power alternative to the ICL7136, distinguished by the inclusion of a Hold pin. The device maintains pin compatibility with the ICL7116 while offering significantly reduced power consumption suitable for portable instrumentation.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX136CMH+D is functionally similar to the ICL7136 but includes a Hold pin. It is pin-compatible with the ICL7116. Direct substitutes within the same family include MAX136CPL+ and MAX136CQH+.