Professional IC Distribution & Technical Solutions

The LM4040A25IDBZR is a precision voltage reference manufactured by Texas Instruments (TI).

Specifications:

• Reference Voltage: 2.5V
• Initial Accuracy: ±0.1% (A-grade)
• Temperature Coefficient (Max): 50 ppm/°C
• Operating Current Range: 60 µA to 15 mA
• Output Current: 15 mA (max)
• Operating Temperature Range: -40°C to +125°C
• Package: SOT-23-3 (DBZ)
• Output Noise (10Hz to 10kHz): 35 µVrms (typical)
• Long-Term Stability: 20 ppm/1000 hours (typical)
• Reverse Breakdown Voltage: 2.5V
• Shunt Current Operation: Yes

Descriptions:

The LM4040A25IDBZR is a precision 2.5V shunt voltage reference with excellent temperature stability and low noise. It operates as a two-terminal device, similar to a Zener diode, but with much tighter voltage tolerances. It is available in multiple grades (A, B, C, D) with varying levels of initial accuracy and temperature drift.

Features:

• High Accuracy: ±0.1% (A-grade)
• Low Temperature Drift: 50 ppm/°C (max)
• Wide Operating Current Range: 60 µA to 15 mA
• Low Output Noise: 35 µVrms (typical)
• No External Capacitor Required for stability
• Small SOT-23 Package for space-constrained applications
• Reverse Breakdown Voltage Options: 2.048V, 2.5V, 3V, 4.096V, 5V (other variants available)
• AEC-Q100 Qualified for automotive applications (select versions)

This device is commonly used in precision voltage regulation, data converters, power supplies, and industrial control systems.