MAX144BCUA+

Analog To Digital Converters (ADC) Overview

The MAX144BCUA+ is a low-power, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It features two single-ended channels and operates on a single +2.7V to +5.25V supply. The device utilizes a successive-approximation register (SAR) architecture with an internal track-and-hold circuit and achieves a maximum sampling rate of 108ksps. Power consumption is 3.2mW at full speed, dropping to 0.2µA in shutdown mode. It communicates via a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE standards. The component is housed in an 8-pin µMAX package and supports an operating temperature range from 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Low power consumption with automatic power-down capabilities
• Two single-ended input channels for signal acquisition
• Integrated successive-approximation ADC with internal clock
• Compatible with standard 3-wire serial interfaces

Analog To Digital Converters (ADC) Applications

• Battery-powered systems
• Portable data logging
• Isolated data acquisition
• Process-control monitoring
• Medical instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CUA+' corresponds to the 8-pin µMAX package and the BC grade accuracy (+/- 1 LSB INL). Confirm the temperature range matches the C designation (0°C to +70°C). Ensure the source document explicitly lists this exact part number variant to avoid confusion with other pin-compatible models or different accuracy grades within the MAX144 family.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX144BCUA+ when a compact 8-pin surface-mount solution is required for dual-channel signal digitization. This model is suitable for applications demanding low power draw and moderate resolution. Verify that the external reference voltage requirements align with the system design, as the device requires an external reference input rather than an internal one.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX144/MAX145 family of low-power, 12-bit serial ADCs. The MAX144 variant specifically provides two single-ended channels, whereas the MAX145 offers a pseudo-differential channel. Both share identical power specifications and serial interface protocols but differ in input configuration flexibility.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible 10-bit versions such as the MAX157 and MAX159 are available. These alternatives offer reduced resolution but maintain similar package footprints and power characteristics.