The LM4040DIM7X-2.5 is a precision shunt voltage reference manufactured by Texas Instruments (TI), formerly National Semiconductor. This device provides a stable and accurate 2.5V voltage reference, making it ideal for applications requiring a precise voltage source for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other precision circuits.

Applications

• Precision voltage reference for ADCs and DACs
• Voltage regulation in power supplies
• Instrumentation and measurement equipment
• Battery-powered devices
• Data acquisition systems
• Industrial control systems

Features

• Precise 2.5V output voltage
• Low temperature coefficient for stable performance over temperature
• Low dynamic impedance for minimal output voltage variation with load current
• Wide operating current range
• Small surface-mount package (SOT-23) for space-saving designs
• Reverse breakdown protection

Benefits

• Improved system accuracy due to precise voltage reference
• Stable performance over a wide temperature range
• Reduced output voltage variation with changing load conditions
• Flexibility in design due to wide operating current range
• Smaller and more compact designs, enabling higher density systems
• Protection against reverse voltage conditions

Technical Specifications

The LM4040DIM7X-2.5 boasts a tight output voltage tolerance, typically around ±0.5% or better. The temperature coefficient is very low, typically around 20 ppm/°C. The operating current range typically extends from 60 μA to 15 mA. The dynamic impedance is very low, typically around 0.2 Ω. The reverse breakdown voltage is typically around -20 V. The operating temperature range is typically between -40°C and +85°C. The package is a small SOT-23 package. It does not require any external compensation capacitors for stable operation.

In summary, the LM4040DIM7X-2.5 from Texas Instruments is a high-precision shunt voltage reference designed for applications requiring a stable and accurate 2.5V voltage source. Its excellent performance characteristics, including low temperature coefficient and low dynamic impedance, make it an ideal choice for a wide range of precision analog circuits.