MAX145AEUA+

Analog To Digital Converters (ADC) Overview

The MAX145AEUA+ is a low-power, 12-bit analog-to-digital converter (ADC) utilizing successive-approximation register (SAR) architecture. It features a single pseudo-differential input channel and operates on a +2.7V to +5.25V supply. The device achieves a maximum sampling rate of 108ksps with a conversion time of 7.4µs. Power consumption is 3.2mW at full speed, dropping to 0.2µA in shutdown mode. It includes an internal track-and-hold circuit and communicates via a 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE standards. The component is housed in an 8-pin µMAX package.

Analog To Digital Converters (ADC) Feature Summary

• Single pseudo-differential input channel configuration
• Integrated track-and-hold circuitry for signal acquisition
• Automatic power-down mode for energy efficiency
• Fast wake-up capability from shutdown state

Analog To Digital Converters (ADC) Applications

• Battery-powered systems
• Portable data logging equipment
• Isolated data acquisition modules
• Process-control monitoring circuits
• Medical instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates extended temperature range (-40°C to +85°C). Confirm the 'U' package code corresponds to the 8-pin µMAX format. Ensure the '+' suffix denotes lead-free compliance. Cross-reference the manufacturer's latest discontinuance notifications as availability may be restricted.

Analog To Digital Converters (ADC) Selection Notes

Select this model when a single differential input is required rather than dual single-ended channels. Verify that the external reference voltage matches the application requirements, as no internal reference is present. Ensure the source impedance is below 1kΩ or add filtering capacitors to maintain accuracy. Check compatibility with the host microprocessor's serial clock speeds.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX144/MAX145 family of low-power ADCs. The MAX145 variant specifically provides one pseudo-differential channel, whereas the MAX144 offers two single-ended channels. Both share identical pinouts and electrical characteristics, differing primarily in input multiplexer configuration.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX144AEUA+ is a pin-compatible alternative offering two single-ended channels instead of one pseudo-differential channel. Other members of the MAX14x family may require schematic adjustments due to different pin assignments or electrical specifications.