MAX189CEPA

Analog To Digital Converters (ADC) Overview

The MAX189CEPA+ is a +5V, low-power, 12-bit serial analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and accepts a 0 to 5V analog input. The device features an 8.5µs successive-approximation ADC, a fast track/hold circuit with a 1.5µs acquisition time, an on-chip clock, and a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. It digitizes signals at a throughput rate of 75ksps. Unlike the MAX187, the MAX189 requires an external reference voltage applied to the REF pin. Power consumption is 7.5mW in operating mode and reduces to 10µA in shutdown.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with ±½ LSB integral nonlinearity for precision applications
• Internal track/hold circuitry supporting a 75kHz sampling rate
• Single +5V operation with ultra-low power consumption
• 3-wire serial interface compatible with standard digital processors

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +85°C). Confirm the '+' suffix denotes lead-free and RoHS compliance status according to current manufacturer documentation. Ensure the package type matches the required PCB footprint for your design.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX189CEPA+ when an external reference voltage is preferred or required over an internal one. This part is suitable for designs needing extended industrial temperature ranges compared to the commercial grade variants. Verify that the system architecture supports the 3-wire serial communication protocol for efficient microcontroller interfacing.

Analog To Digital Converters (ADC) Part Context

The MAX189CEPA+ belongs to the MAX187/MAX189 family of low-power serial ADCs. While functionally similar to the MAX187, it differs by requiring an external reference voltage rather than utilizing an internal buffered reference. Both devices share the same 8-pin PDIP package and core conversion architecture.

Analog To Digital Converters (ADC) Replacement Considerations

MAX187CEPA+ offers identical performance but includes an internal reference.