MAX197BCNI+

ADCs/DACs - Special Purpose Overview

The MAX197BCNI+ is a multi-range, 12-bit data-acquisition system (DAS) manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and features eight analog input channels with software-selectable ranges: ±10V, ±5V, 0V to +10V, or 0V to +5V. The device provides an effective dynamic range of 14 bits and includes overvoltage protection up to ±16.5V. Key electrical specifications include a 100ksps throughput rate, 6µs conversion time, and a 5MHz track/hold bandwidth. It utilizes a successive approximation architecture with an internal 4.096V reference or external reference capability. The component is housed in a 28-pin narrow plastic DIP package and supports an 8+4 parallel bus interface.

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

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'I' indicates the 28-pin Narrow Plastic DIP package and 'C' denotes the commercial temperature range of 0°C to +70°C. Confirm RoHS compliance status as '+'. Check for obsolescence notices from the manufacturer, as this part number may be discontinued. Ensure the ordering suffix matches the required package and temperature grade for the design.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX197BCNI+ when a 12-bit resolution with 100ksps sampling rate is required in a through-hole DIP package. Choose this variant over the MAX199 if the specific input ranges of ±10V, ±5V, 0-10V, or 0-5V are needed rather than ±4V, ±2V, 0-4V, or 0-2V. Ensure the application can accommodate the single +5V supply requirement and TTL/CMOS compatible logic levels.

ADCs/DACs - Special Purpose Part Context

The MAX197 is part of a family of multi-range data acquisition systems from Maxim Integrated. The 'B' suffix typically denotes a specific accuracy grade compared to the 'A' grade. The 'NI' suffix specifies the 28-pin Narrow Plastic DIP package. This component serves as a complete DAS solution, integrating the ADC, multiplexer, and reference buffer into a single chip to simplify microprocessor interfacing.

ADCs/DACs - Special Purpose Replacement Considerations

For different input ranges (±4V, ±2V, 0-4V, 0-2V), refer to the MAX199 data sheet. For 12-bit bus interface alternatives, consider the MAX196 and MAX198 data sheets. Verify pin compatibility and electrical characteristics before substituting with other packages like SO or SSOP variants.