MAX187BEPA

Analog To Digital Converters (ADC) Overview

The MAX187BEPA+ is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It features an internal track/hold circuit and operates at a throughput rate of 75ksps. The device utilizes a successive-approximation register (SAR) architecture and communicates via a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. It includes an on-chip buffered reference voltage of 4.096V. The component is housed in an 8-pin PDIP package and supports single-ended input signals ranging from 0 to VREF.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 12-bit SAR ADC with internal track/hold circuitry
• On-chip buffered 4.096V reference voltage source
• Low power consumption with 2µA shutdown current
• 3-wire serial interface compatible with standard digital protocols

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BEPA' against official manufacturer documentation to confirm the temperature range (-40°C to +85°C) and package type (PDIP-8). Ensure that the internal reference configuration matches system requirements, as the SHDN pin controls reference enablement. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX187BEPA+ when a single-channel, 12-bit resolution is required with minimal external components due to the integrated reference. Consider the 75ksps sampling rate for applications not requiring higher throughput. Verify that the 3-wire serial interface aligns with the host microcontroller's available pins. Evaluate the power-down mode benefits if battery life or thermal management is a critical design constraint.

Analog To Digital Converters (ADC) Part Context

The MAX187BEPA+ belongs to the MAX187/MAX189 family of low-power serial ADCs. While the MAX187 integrates an internal reference, the MAX189 variant requires an external reference. Both share similar architectural features but differ in reference configuration and pin functionality regarding the SHDN line. This part represents the industrial temperature grade version within the PDIP package lineup.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes include other parts within the MAX187/MAX189 family, such as the MAX187CEPA+ for commercial temperature ranges. Verify compatibility regarding the internal reference enable logic and serial interface timing parameters before substitution.