HI7133CM44

ADCs/DACs - Special Purpose Overview

The HI7133CM44 is a dual-channel, 3.5-digit analog-to-digital converter and display driver manufactured by Harris Corporation. It integrates a precision voltage reference, multiplexed input stage, and high-speed switching capacitors to perform simultaneous sampling on two independent channels. The device converts analog signals into BCD codes suitable for direct driving of LED or LCD displays via its internal decoder logic. It operates from a single power supply and utilizes a 44-pin MQFP package.

ADCs/DACs - Special Purpose Feature Summary

• Dual-channel architecture enabling simultaneous sampling of two independent analog inputs
• Integrated high-precision voltage reference eliminating the need for external components
• Built-in decoder logic for direct connection to LED or LCD visual indicators
• Internal multiplexing circuitry manages signal acquisition and conversion sequencing

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-point monitoring
• Portable battery-powered instrumentation with limited component count
• Data acquisition modules for environmental sensing
• Medical diagnostic equipment displaying vital signs

ADCs/DACs - Special Purpose Procurement Notes

Verify manufacturing status as this component may be obsolete. Confirm RoHS compliance requirements against specific revision markings. Ensure the 44-pin MQFP footprint matches the target PCB design. Validate that the single-supply voltage range aligns with system power rails before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select this part when dual-channel simultaneous sampling is required within a compact form factor. Consider the 44-pin MQFP package constraints for thermal management and routing density. Verify that the 3.5-digit resolution meets the accuracy needs of the application. Check compatibility with existing display technologies supported by the internal decoder.

ADCs/DACs - Special Purpose Part Context

This component belongs to the HI7133 family of dual-channel ADCs. It shares functional similarities with other devices in the series but offers specific integration levels regarding the voltage reference and display drivers. The CM44 suffix indicates the commercial temperature range and the specific 44-pin plastic quad flat package configuration used for surface mount assembly.

ADCs/DACs - Special Purpose Replacement Considerations

• HI7133CMH+D
• ICL7136CMH+D

ADCs/DACs - Special Purpose FAQ

Does the HI7133CM44 support simultaneous sampling?

Yes, the device features a dual-channel architecture designed for simultaneous sampling of two independent analog inputs.

What type of display can be driven directly?

The internal decoder logic allows for direct driving of both LED and LCD displays without additional interface components.

Is an external voltage reference required?

No, a precision voltage reference is integrated internally within the chip.