ICL7126CQH+D

ADCs/DACs - Special Purpose Overview

The ICL7126CQH+D is a low-power, 3 1/2-digit analog-to-digital converter (ADC) designed for direct liquid crystal display (LCD) drive. Manufactured by Analog Devices under the Maxim Integrated brand, this CMOS device integrates seven-segment decoders, display drivers, a reference, and an on-chip clock. It operates with a supply current of 100µA, making it suitable for 9V battery-powered applications. The component features true differential input and reference capabilities, auto-zero functionality with less than 10µV offset, and zero drift of less than 1µV/°C. It is housed in a PLCC-44 package and supports surface-mount installation.

ADCs/DACs - Special Purpose Feature Summary

• Low Power Dissipation: Guaranteed less than 1mW power consumption with 100µA supply current.
• Direct LCD Drive: Includes backplane drive capability without requiring external components.
• High Accuracy: Features auto-zero to less than 10µV and input bias current of 10pA maximum.
• True Differential Input: Supports differential input and reference for bridge-type transducers.

ADCs/DACs - Special Purpose Applications

• Panel meters
• Multi-meters
• Load cell measurements
• Strain gauge interfaces

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'D' against official documentation to confirm lead-free status and RoHS compliance details. Confirm the package type is PLCC-44 as indicated in available specifications. Check for moisture sensitivity level requirements during storage and handling. Ensure the operating temperature range of 0°C to +70°C meets application constraints.

ADCs/DACs - Special Purpose Selection Notes

Select the ICL7126CQH+D when a low-power, single-supply A/D converter with direct LCD output is required. It serves as a pin-compatible replacement for the ICL7106, requiring only passive component changes. Ideal for portable instruments powered by 9V batteries due to its 100µA supply current. Ensure the design accommodates the PLCC-44 surface-mount package.

ADCs/DACs - Special Purpose Part Context

The ICL7126 belongs to the ICL71xx series of 3 1/2-digit A/D converters from Analog Devices/Maxim Integrated. It is part of a family that includes LED driver variants like the ICL7107. The 'C' typically denotes commercial temperature range, while 'Q' may indicate specific packaging or qualification standards. The '+' suffix generally indicates lead-free/RoHS compliance in Maxim's nomenclature.

ADCs/DACs - Special Purpose Replacement Considerations

The ICL7126 is documented as a plug-in replacement for the ICL7106 in many applications, differing primarily in display interface (LCD vs. LED). Verify pin compatibility and passive component adjustments before substitution. No other direct public substitutes are confirmed in the provided data.