MAX197AEWI+

ADCs/DACs - Special Purpose Overview

The MAX197AEWI+ is a multi-range, 12-bit data-acquisition system (DAS) requiring a single +5V supply. It features eight analog input channels independently programmable for ±10V, ±5V, 0V to +10V, or 0V to +5V ranges. The device provides 100ksps throughput with a 6µs conversion time and 5MHz track/hold bandwidth. Input channels are overvoltage tolerant to ±16.5V. It includes an internal 4.096V reference or supports external references, selectable via software. The component utilizes an 8+4 parallel bus interface compatible with TTL/CMOS logic and operates within a commercial temperature range of 0°C to +70°C in a 28-pin Wide SO package.

ADCs/DACs - Special Purpose Feature Summary

• 12-Bit Resolution with 1/2 LSB Integral Nonlinearity
• Software-Selectable Input Ranges: ±10V, ±5V, 0V to 10V, 0V to 5V
• Fault-Protected Input Multiplexer Tolerant to ±16.5V
• Single +5V Operation with Internal or External Reference Options

ADCs/DACs - Special Purpose Applications

• Industrial-Control Systems
• Data-Acquisition Systems
• Automatic Testing Systems
• Medical Instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature grade (-40°C to +85°C) if required by the application environment, as datasheet ordering information lists 'ACWI' and 'BCWI' variants for the 0°C to +70°C range. Confirm package availability and RoHS compliance status through authorized distributors, as manufacturing statuses may change.

ADCs/DACs - Special Purpose Selection Notes

Select this component when interfacing sensors with wide voltage swings (±12V or ±15V) to a single +5V microprocessor system. Ensure the design accommodates the 8+4 parallel interface timing requirements. For applications requiring higher resolution or different channel counts, consider the MAX196 or MAX198 series.

ADCs/DACs - Special Purpose Part Context

The MAX197 belongs to the Maxim Integrated DAS family, designed to simplify signal conditioning by integrating multiplexing, amplification, and ADC functions. It eliminates the need for external bipolar power supplies in single-supply systems. The 'AEWI+' designation specifies the A-grade accuracy, E-grade temperature range, and Wide SOIC package.

ADCs/DACs - Special Purpose Replacement Considerations

For alternative packages or temperature grades within the same family, refer to MAX197ACNI, MAX197BCNI, or MAX197ACAI. For 12-bit devices with different bus interfaces, consult the MAX196 and MAX198 datasheets.