Texas Instruments LM4040 Precision Shunt Voltage Reference 2.5V TO-226AA

The Texas Instruments LM4040DIZ-2.5 is a precision micropower shunt voltage reference designed for reliability and ease of integration into your electronic designs. Its advanced architecture removes the requirement for an external stabilising capacitor, guaranteeing stable performance even with capacitive loads, which significantly simplifies circuit design.

Available with a fixed reverse breakdown voltage of 2.5V, this component reduces design effort and streamlines the prototyping process. During manufacturing, a fuse and Zener-zap trimming process is employed to achieve high initial accuracy, with premium A-grade parts offering better than ±0.1% accuracy at 25°C.

Featuring band gap reference temperature drift curvature correction and low dynamic impedance, the LM4040 maintains a stable and accurate output voltage across a broad spectrum of operating temperatures and currents. This makes it exceptionally reliable for precision applications where consistent voltage is critical.

A key advantage is its noiseless operation, producing just 35µVrms of low output noise, which is essential for sensitive analogue circuitry. Its inherent tolerance for capacitive loads further enhances its versatility and robustness in various circuit configurations.

Key Features & Benefits:

• Easy to Use: No output capacitor required for stable operation.
• High Accuracy: Precision-trimmed for tight voltage tolerance.
• Low Noise: Output noise of just 35µVrms for clean power delivery.
• Wide Operating Range: Functions from -40°C to 85°C.
• Stable with Loads: Tolerates capacitive loads without oscillation.
• Compact Through-Hole Package: TO-226AA (TO-92) 3-pin package for easy PCB mounting.

Ideal for designers seeking a dependable, high-performance voltage reference that minimises board space and component count while delivering exceptional accuracy.