MAX197ACWI

ADCs/DACs - Special Purpose Overview

The MAX197ACWI is a multi-range, 12-bit data-acquisition system (DAS) requiring a single +5V supply. It features eight analog input channels with software-selectable ranges: ±10V, ±5V, 0V to +10V, or 0V to +5V. The device offers a 100ksps throughput rate and 6µs conversion time. It includes an internal 4.096V reference or supports external references, with overvoltage protection up to ±16.5V. The component utilizes an 8+4 parallel bus interface and operates within a 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 1/2LSB Integral Nonlinearity
• Software-Selectable Input Ranges: ±10V, ±5V, 0V to +10V, 0V to +5V
• 100ksps Throughput Rate with 6µs Conversion Time
• Fault-Protected Input Multiplexer Tolerant to ±16.5V

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix ACWI corresponds to the 0°C to +70°C operating temperature range and 28-pin Wide SOIC package. Confirm RoHS compliance status for the specific manufacturing lot, as older revisions may differ. Ensure the design accounts for the single +5V supply requirement and appropriate decoupling capacitors for the REF pin.

ADCs/DACs - Special Purpose Selection Notes

Select this component when interfacing sensors with varying voltage levels (±12V, ±15V, 4mA-to-20mA) to a single +5V microprocessor system. Choose the internal reference mode for simplified designs or external reference for higher precision requirements. Consider the 8+4 bit parallel interface compatibility with the target microcontroller's data bus width.

ADCs/DACs - Special Purpose Part Context

The MAX197ACWI belongs to the MAX197 family of multi-range DAS devices. It shares core architecture with variants like MAX197BCWI but differs in accuracy specifications (Class A vs Class B). Related parts include the MAX196 and MAX198, which offer different bus interface widths (12-bit), and the MAX199, which provides alternative input ranges.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same package are limited due to discontinued status. Evaluate the MAX197BCWI for identical form factor with potentially different accuracy grades. For modern alternatives, consider newer ADCs from Analog Devices that support similar input ranges and parallel interfaces.