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The MAX840ISA is a low-power, precision voltage reference IC manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

Specifications:

• Output Voltage: 4.096V
• Initial Accuracy: ±0.2% (max)
• Temperature Coefficient: 10ppm/°C (max)
• Operating Current: 60µA (typ)
• Supply Voltage Range: 4.5V to 40V
• Output Current: ±5mA (sourced/sinked)
• Long-Term Stability: 50ppm/1000hrs (typ)
• Operating Temperature Range: -40°C to +85°C
• Package: 8-pin SOIC (ISA)

Descriptions:

The MAX840ISA is a low-power, precision voltage reference designed for applications requiring high accuracy and stability. It provides a fixed 4.096V output with low drift and excellent line/load regulation. Its low quiescent current makes it suitable for battery-powered and portable devices.

Features:

• Low Power Consumption: Only 60µA typical supply current
• High Accuracy: ±0.2% initial voltage tolerance
• Low Temperature Drift: 10ppm/°C (max)
• Wide Supply Range: Operates from 4.5V to 40V
• Low Noise: Optimized for precision applications
• Stable Output: Supports ±5mA output drive
• Long-Term Stability: 50ppm/1000hrs (typ)
• Industrial Temperature Range: -40°C to +85°C

The MAX840ISA is commonly used in data acquisition systems, industrial controls, medical instruments, and portable electronics where a stable voltage reference is critical.

(Note: For detailed application circuits or further technical support, refer to the official datasheet from Maxim Integrated/Analog Devices.)