MAX198AEAI+

ADCs/DACs - Special Purpose Overview

The MAX198AEAI+ is a multirange, single +5V, 12-bit data-acquisition system (DAS) from Analog Devices/Maxim Integrated. It features six analog input channels with software-selectable ranges of ±VREF, ±VREF/2, 0V to VREF, and 0V to VREF/2. The device employs a successive approximation register (SAR) architecture with a 5MHz bandwidth track/hold and a 100ksps throughput rate. It includes fault protection to ±16.5V, two power-down modes, and a 12-bit parallel interface compatible with TTL/CMOS logic. Operating within the industrial temperature range of -40°C to +85°C, it utilizes an internal 4.096V reference or an external source.

ADCs/DACs - Special Purpose Feature Summary

• Six independently programmable analog input channels with software-selectable bipolar and unipolar ranges.
• 12-bit resolution with ±1/2 LSB integral nonlinearity and 100ksps sampling rate.
• Single +5V supply operation with overvoltage protection on inputs to ±16.5V.
• Two power-down modes (STBYPD and FULLPD) for low-current shutdown between conversions.

ADCs/DACs - Special Purpose Applications

• Industrial-control systems
• Data-acquisition systems
• Automatic testing systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'EAI+' corresponds to the SSOP-28 package and the -40°C to +85°C extended temperature grade as defined in the ordering information. Confirm RoHS compliance status through official manufacturer documentation prior to integration.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX198AEAI+ when bipolar or unipolar input ranges relative to the reference voltage are required, rather than fixed voltage levels. Ensure the design accommodates the 12-bit parallel interface timing requirements and provides adequate bypassing for the REF pin to maintain specified linearity and noise performance.

ADCs/DACs - Special Purpose Part Context

This component belongs to the MAX196/MAX198 family of multirange DAS devices. While the MAX196 offers fixed input ranges such as ±10V and ±5V, the MAX198 variant scales its input range directly based on the applied reference voltage, providing flexibility for interfacing with various sensor types using a single +5V supply.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's obsolescence notices or current product selection guides for potential replacements if this specific part number becomes unavailable.