Texas Instruments

LM4050BIM3-2.5

LM4050BIM3-2.5 Description

The LM4050BIM3-2.5 is a high-precision shunt voltage reference from Texas Instruments, designed to deliver a fixed 2.5V output with an exceptional tolerance of ±0.2%. This obsolete but reliable component is housed in a compact SOT-23-3 package, making it suitable for space-constrained applications. As a shunt reference, it operates independently of input voltage variations, ensuring stable performance across a wide range of conditions. With a 15 mA output current capability and a low temperature coefficient of 50ppm/°C, it maintains accuracy even in thermally dynamic environments. The device exhibits low noise (41µVrms from 10Hz to 10kHz) and a minimal cathode current of 65 µA, enhancing efficiency in precision circuits.

LM4050BIM3-2.5 Features

• Fixed 2.5V Output: Precision voltage reference with ±0.2% tolerance for critical applications.
• Low Noise & High Stability: 41µVrms noise and 50ppm/°C tempco ensure reliable performance in sensitive systems.
• Compact & Robust: SOT-23-3 package with MSL 1 (Unlimited) moisture sensitivity, ideal for surface-mount designs.
• Low Power Consumption: Cathode current of just 65 µA minimizes energy waste in battery-operated devices.
• RoHS3 & REACH Compliant: Meets environmental standards for global deployment.
• Wide Operating Range: Shunt architecture allows flexibility in input voltage selection.

LM4050BIM3-2.5 Applications

This voltage reference excels in precision analog circuits, including:

• ADC/DAC Reference: Provides stable voltage for analog-to-digital/digital-to-analog converters.
• Sensor Calibration: Ensures accuracy in temperature, pressure, or industrial sensors.
• Portable Electronics: Low power and small footprint suit wearables and IoT devices.
• Power Management: Voltage regulation in low-power DC/DC converters or LDOs.
• Test & Measurement Equipment: High stability supports lab-grade instrumentation.

Conclusion of LM4050BIM3-2.5

The LM4050BIM3-2.5 is a high-accuracy shunt voltage reference tailored for precision-critical applications. Its low noise, tight tolerance, and compact form factor make it a strong choice despite its obsolete status. While newer alternatives exist, its performance in sensor interfaces, data converters, and portable systems remains unmatched for designs prioritizing stability and efficiency. Engineers seeking a proven, low-power reference with robust thermal performance will find this device invaluable.