MAX144BCPA+

Analog To Digital Converters (ADC) Overview

The MAX144BCPA+ 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 supply voltage ranging from +2.7V to +5.25V. The device utilizes a successive-approximation register (SAR) architecture with an internal track-and-hold circuit, achieving a maximum sampling rate of 108ksps. It incorporates a fast wake-up time of 2.5µs and an automatic power-down mode that reduces current consumption to 0.2µA. Data transfer occurs via a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The component is housed in an 8-pin Plastic DIP package and supports an operating temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Single-supply operation within a wide voltage range for flexible system integration
• Integrated track-and-hold stage with automatic power-down capability for energy efficiency
• Compatible with standard microprocessor serial interfaces including SPI, QSPI, and MICROWIRE

Analog To Digital Converters (ADC) Applications

• Battery-powered systems requiring extended operational life
• 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 'CPA+' indicates the plastic DIP package variant when sourcing replacements. Confirm the manufacturer designation matches Analog Devices or Maxim Integrated to ensure authenticity. Check RoHS compliance documentation for environmental regulatory adherence. Validate the operating temperature grade corresponds to commercial specifications if deployed in non-industrial environments.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring dual-channel signal digitization with minimal power consumption. Ensure the input signal range aligns with the external reference voltage capabilities. Verify that the source impedance remains below 1kΩ to maintain optimal dynamic performance without additional filtering components. Consider the package constraints if board space is limited compared to surface-mount alternatives.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX144/MAX145 family of 12-bit ADCs. The MAX144 variant provides two single-ended channels, whereas the MAX145 offers one pseudo-differential channel. Both share identical pinouts and core functionalities, differing primarily in input configuration flexibility. This family targets cost-sensitive, space-constrained designs needing moderate speed and resolution.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible 10-bit versions such as the MAX157 and MAX159 are available from the same manufacturer. These substitutes offer lower resolution but may provide alternative performance trade-offs for specific system requirements.