MAX1492CAI+

ADCs/DACs - Special Purpose Overview

The MAX1492CAI+ is a low-power, 3.5-digit analog-to-digital converter (ADC) with integrated liquid crystal display (LCD) drivers. It operates from a single 2.7V to 5.25V supply and features a sigma-delta architecture with selectable input ranges of ±2V or ±200mV. The device includes an internal 2.048V reference, a high-accuracy on-chip oscillator, and an internal charge pump for negative supply generation. It provides >100dB simultaneous rejection of 50Hz and 60Hz line noise, automatic offset calibration, and communicates via an SPI/QSPI/MICROWIRE-compatible serial interface. The component is housed in a 28-pin SSOP package and operates within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• 3.5-digit resolution (±1999 count) with sigma-delta ADC architecture
• Integrated triplexed LCD driver for direct display connection
• Internal 2.048V voltage reference and high-accuracy oscillator
• >100dB simultaneous 50Hz/60Hz line noise rejection

ADCs/DACs - Special Purpose Applications

• Digital Panel Meters
• Hand-Held Meters
• Digital Voltmeters
• Digital Multimeters

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix 'CAI+' corresponds to the 28-pin SSOP package and the 0°C to +70°C commercial temperature range as defined in the manufacturer's selector guide. Confirm RoHS compliance status through official documentation before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select this model for applications requiring 3.5-digit precision with direct LCD interfacing capabilities. Ensure the design utilizes a single 2.7V to 5.25V power supply. Consider the MAX1494 if higher 4.5-digit resolution is required, noting the difference in pin count and package type.

ADCs/DACs - Special Purpose Part Context

This component belongs to the MAX1492/MAX1494 family of single-chip ADCs with LCD drivers. The MAX1492 variant specifically offers 3.5-digit resolution, distinguishing it from the MAX1494 which provides 4.5-digit resolution. Both share similar architectural features but differ in output count and physical packaging options.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.