MAX1402EAI+T

Analog To Digital Converters (ADC) Overview

The MAX1402EAI+T is a low-power, multichannel analog-to-digital converter featuring an 18-bit sigma-delta architecture. It provides true 16-bit accuracy with no missing codes at output data rates up to 480sps. The device includes three fully differential or five pseudo-differential signal input channels, along with two additional fully differential system-calibration channels. It operates from a +5V analog supply and a +2.7V to +5.25V digital supply. Key electrical parameters include a quiescent current of 250µA in operating mode and 2µA in power-down mode. Matched 200µA current sources are integrated for sensor excitation.

Analog To Digital Converters (ADC) Feature Summary

• Integrated matched 200µA current sources for sensor excitation
• User-selectable digital decimation filter for resolution-throughput trade-off
• Programmable gain amplifier with offset compensation capabilities
• Automatic channel scanning with continuous data output mode

Analog To Digital Converters (ADC) Applications

• Portable industrial instruments
• Portable weigh scales
• Loop-powered systems
• Pressure transducers

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high-resolution multichannel acquisition is required with minimal power consumption. The sigma-delta architecture supports programmable gain and offset correction, simplifying front-end design. Verify that the required data rate aligns with the selected decimation factor to ensure optimal noise performance and line rejection characteristics.

Analog To Digital Converters (ADC) Part Context

The MAX1402 belongs to Maxim Integrated's family of low-power, oversampling ADCs designed for precision measurement applications. It utilizes a sigma-delta modulator combined with a digital decimation filter to achieve high resolution. The device integrates signal conditioning features such as programmable gain and calibration inputs, reducing external component count in sensor interface designs.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for validated alternatives if the MAX1402EAI+T is unavailable.

Analog To Digital Converters (ADC) FAQ

How does the MAX1402 handle line frequency noise rejection?

When used with a 2.4576MHz or 1.024MHz master clock, the digital decimation filter can be programmed to produce zeros in its frequency response at line frequencies and associated harmonics, ensuring excellent line rejection without post-filtering.

What is the maximum output data rate for true 16-bit performance?

True 16-bit performance with no missing codes is achieved at an output data rate of up to 480sps.

Can the MAX1402 operate with a single supply voltage?

No, the MAX1402 requires separate supplies: a +5V analog supply (V+) and a +2.7V to +5.25V digital supply (VDD).