MAX127AENG+

ADCs/DACs - Special Purpose Overview

The MAX127AENG+ is a multirange, 12-bit data acquisition system (DAS) from Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply while accepting analog input signals spanning above the power-supply rail and below ground. The device features eight independently software-programmable analog input channels with selectable ranges including ±10V, ±5V, 0 to +10V, and 0 to +5V. It offers 12-bit resolution with 1/2 LSB linearity and an 8ksps sampling rate. Communication is handled via an I2C-compatible, 2-wire serial interface. The component includes an internal 4.096V reference or supports external references, two power-down modes, and overvoltage-tolerant inputs.

ADCs/DACs - Special Purpose Feature Summary

• Multirange 12-Bit Resolution: Supports ±10V, ±5V, 0 to +10V, and 0 to +5V input ranges with 1/2 LSB linearity.
• Single-Supply Operation: Functions on a single +5V supply despite accepting signals exceeding the rail voltage.
• I2C-Compatible Interface: Utilizes a 2-wire serial interface for control and data transfer.
• Overvoltage-Tolerant Inputs: Input multiplexer tolerates voltages up to ±16.5V.

ADCs/DACs - Special Purpose Applications

• Industrial Control Systems
• Data-Acquisition Systems
• Robotics
• Automatic Testing Equipment
• Battery-Powered Instruments

ADCs/DACs - Special Purpose Part Context

The MAX127AENG+ belongs to the MAX127/MAX128 family of multirange data acquisition systems. The 'A' suffix typically denotes an extended temperature range compared to the standard 'B' variant. The 'ENG+' suffix indicates a lead-free, RoHS-compliant package in a 24-pin Narrow DIP format. This series is designed for applications requiring high accuracy and flexible input scaling without complex external circuitry.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX127BCAI+T is a similar multirange DAS but uses an SSOP-28 package and may have different temperature specifications. For direct pin-to-pin replacement in a DIP-24 footprint, verify the specific temperature grade and package dimensions against the MAX127AENG+. Other family members like the MAX1270 offer higher speeds but differ in interface and channel configuration.