MAX1280BEUP+

Analog To Digital Converters (ADC) Overview

The MAX1280BEUP+ is a 12-bit successive-approximation analog-to-digital converter (ADC) featuring an 8-channel analog-input multiplexer, high-bandwidth track/hold circuitry, and a serial interface. It operates from a single +4.5V to +5.5V supply with a sampling rate of 400ksps. The device includes an internal +2.5V reference and supports software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs. It utilizes a 4-wire serial interface compatible with SPI/QSPI/MICROWIRE standards and offers four power modes, reducing current to under 100µA at reduced rates.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel analog-input multiplexer with a high-bandwidth track/hold circuit for efficient multi-channel data acquisition.
• Features a 4-wire serial interface that connects directly to standard microprocessor protocols without requiring external logic.
• Includes an internal +2.5V reference with a buffer amplifier that allows for voltage adjustment or external reference input.
• Provides multiple software-selectable power-down modes to minimize supply current during idle periods.

Analog To Digital Converters (ADC) Applications

• Portable Data Logging
• Data Acquisition Systems
• Medical Instruments
• Battery-Powered Instruments
• Process Control

Analog To Digital Converters (ADC) Procurement Notes

Verify the component against the official Analog Devices datasheet specifications to ensure authenticity. Confirm the package type is TSSOP-20 and the temperature range matches the BE suffix (-40°C to +85°C). Check for lead-free/RoHS compliance markings on the device body. Ensure the ordering suffix corresponds to the specific variant required for your application design.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX1280BEUP+ when a single +5V supply is available and a 400ksps sampling rate is required. Choose this part over the MAX1281 if the system voltage exceeds 3.6V. Consider the 12-bit resolution and ±1 LSB INL/DNL limits for accuracy requirements. Evaluate the serial interface compatibility with the host microcontroller's SPI or MICROWIRE settings before finalizing the selection.

Analog To Digital Converters (ADC) Part Context

The MAX1280BEUP+ belongs to the MAX1280/MAX1281 family of low-power, single-supply ADCs. It serves as a higher-speed alternative to the MAX146/MAX147 series. The 'B' suffix indicates a commercial temperature range extension compared to industrial variants, while the 'E' suffix specifies the extended -40°C to +85°C operating range. The '+' denotes a lead-free and RoHS-compliant manufacturing process.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: MAX1280BCUP+, MAX1281BEUP+, MAX1281BCUP+. Verify pinout compatibility and electrical characteristics such as supply voltage range and sampling speed before substitution.