LM4128CMFX-2.5/NOPB

The LM4128CMFX-2.5/NOPB is a precision voltage reference integrated circuit (IC) manufactured by Texas Instruments. It is designed to provide a stable reference voltage of 2.5 volts with high accuracy and low drift, making it suitable for a variety of applications, including data acquisition systems, instrumentation, and precision analog circuits.

Key Features:

1. Voltage Reference: The LM4128 provides a fixed output voltage of 2.5V, which is ideal for applications requiring a stable reference point.

2. Precision: The device boasts a high initial accuracy of ±0.5% at 25°C, ensuring that the output voltage is very close to the specified value.

3. Low Temperature Coefficient: The temperature coefficient is typically around 10 ppm/°C, which means that the output voltage remains stable over a wide temperature range, enhancing reliability in varying environmental conditions.

4. Low Noise: The LM4128 is designed to minimize output noise, which is crucial for sensitive applications where noise can affect performance.

5. Wide Operating Range: The device operates over a wide input voltage range, typically from 4.5V to 15V, allowing it to be used in various circuit configurations.

6. Low Output Impedance: The output impedance is low, which helps maintain a stable output voltage even under varying load conditions.

7. Power Supply Rejection Ratio (PSRR): The LM4128 features a high PSRR, which means it can effectively reject variations in the input supply voltage, further stabilizing the output.

8. Package Type: The LM4128CMFX-2.5/NOPB is available in a compact MSOP-8 package, which is suitable for space-constrained applications.

9. Lead-Free: The "NOPB" designation indicates that the part is lead-free, making it compliant with RoHS standards for environmental safety.

Applications:

• Data Acquisition Systems: Used as a reference voltage for ADCs (Analog-to-Digital Converters) to ensure accurate measurements.
• Instrumentation: Provides a stable reference for precision measurement devices.
• Signal Conditioning: Used in circuits that require a stable reference for signal processing.
• Voltage Regulation: Can be used in conjunction with other components to create stable voltage supplies.

Electrical Characteristics:

• Output Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 10 ppm/°C
• Operating Temperature Range: Typically from -40°C to +125°C
• Supply Voltage Range: 4.5V to 15V

Conclusion:

The LM4128CMFX-2.5/NOPB from Texas Instruments is a highly reliable and precise voltage reference IC that is well-suited for applications requiring stable voltage references. Its combination of low noise, high accuracy, and excellent temperature stability makes it a preferred choice for engineers designing precision electronic systems.