MAX189BCPA+

Analog To Digital Converters (ADC) Overview

The MAX189BCPA+ is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It features a successive-approximation register (SAR) architecture with an internal track/hold circuit and operates at a throughput rate of 75ksps. The device accepts single-ended analog inputs ranging from 0 to VREF and requires an external reference voltage. It communicates via a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The component is housed in an 8-pin PDIP package and supports a supply voltage range of 4.75V to 5.25V.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with ±1 LSB differential nonlinearity
• Single +5V operation with low power consumption
• Internal track/hold with 75kHz sampling rate
• 3-wire serial interface compatible with standard digital protocols

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Remote digital signal processing
• Isolated data acquisition
• High-accuracy process control

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CPA+' against official manufacturer documentation to confirm the package type and temperature rating. Ensure that the required external reference voltage is properly decoupled near the REF pin as specified in the datasheet. Confirm compatibility with the host microcontroller's serial interface timing requirements before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 75ksps throughput are sufficient for the application. Unlike the MAX187, the MAX189 requires an external reference voltage, which must be accounted for in the system design. Verify that the operating temperature range meets the environmental conditions, as the 'C' suffix typically denotes commercial temperature limits.

Analog To Digital Converters (ADC) Part Context

The MAX189BCPA+ belongs to the MAX187/MAX189 family of low-power serial ADCs. This series is designed for applications requiring small footprint and ease of interfacing with microprocessors. The MAX189 variant specifically necessitates an external reference, distinguishing it from the internally referenced MAX187 within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX187ACPA+ is a direct substitute within the same family, differing primarily in its inclusion of an internal buffered reference.