MAX199ACNI

Analog To Digital Converters (ADC) Overview

The MAX199ACNI is a multi-range, 12-bit data-acquisition system (DAS) from Analog Devices/Maxim Integrated. It operates on a single +5V supply and converts analog signals up to ±4V across eight independently programmable input channels. The device supports ranges of ±VREF, ±VREF/2, 0V to VREF, or 0V to VREF/2, effectively increasing dynamic range to 14 bits. Key specifications include a 100ksps throughput rate, 6µs conversion time, and a 5MHz bandwidth track/hold. It features an 8+4 parallel bus interface, fault protection to ±16.5V, and internal or external clock options. The component is housed in a 28-pin narrow plastic DIP package with an operating temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Software-selectable input ranges for flexible sensor interfacing
• Fault-protected input multiplexer tolerant to ±16.5V overvoltage
• Dual power-down modes including standby with active reference buffer
• Standard microprocessor-compatible three-state parallel interface

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix ACNI to confirm the 28-pin narrow plastic DIP package and commercial temperature range. Confirm current availability status as legacy components may have limited stock or end-of-life restrictions. Ensure compatibility with existing PCB footprints and soldering profiles for through-hole mounting.

Analog To Digital Converters (ADC) Selection Notes

Select this part when an 8-channel multiplexed ADC with software-programmable voltage ranges is required. It is suitable for applications needing ±4V, ±2V, or unipolar inputs without external scaling circuitry. Consider the 12-bit resolution and 100ksps speed against system latency requirements. Verify that the parallel interface timing matches the host microcontroller capabilities.

Analog To Digital Converters (ADC) Part Context

The MAX199ACNI belongs to the MAX199 family of multi-range data acquisition systems. It shares functional similarities with the MAX197 and MAX198 but offers distinct input range configurations and channel counts. The 'ACNI' suffix specifically denotes the A-grade accuracy, commercial temperature range, and 28-pin DIP packaging variant within the broader Maxim Integrated portfolio.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.