LM385D-2.5R2G

Product Overview

Category

The LM385D-2.5R2G belongs to the category of voltage references.

Use

This product is commonly used in electronic circuits to provide a stable and precise voltage reference.

Characteristics

• Voltage Output: 2.5V
• Accuracy: ±1%
• Temperature Coefficient: 100 ppm/°C
• Low Quiescent Current: 120 µA (typical)
• Low Dynamic Impedance: 0.2 Ω (typical)

Package

The LM385D-2.5R2G is available in an SOT-23 package, which is a small surface-mount package suitable for compact circuit designs.

Essence

The essence of LM385D-2.5R2G lies in its ability to generate a stable and accurate voltage reference, ensuring reliable performance of electronic systems.

Packaging/Quantity

This product is typically packaged in reels or tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±1%
• Temperature Coefficient: 100 ppm/°C
• Quiescent Current: 120 µA (typical)
• Dynamic Impedance: 0.2 Ω (typical)
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT-23

Detailed Pin Configuration

The LM385D-2.5R2G has three pins:

1. Vout: Output pin, provides a stable 2.5V reference voltage.
2. GND: Ground pin, connected to the ground of the circuit.
3. Vin: Input pin, not internally connected and left unconnected.

Functional Features

• Precise Voltage Reference: The LM385D-2.5R2G generates a stable 2.5V reference voltage, ensuring accurate performance of electronic circuits.
• Low Quiescent Current: With a low quiescent current of 120 µA, this voltage reference minimizes power consumption in battery-powered applications.
• Low Dynamic Impedance: The low dynamic impedance of 0.2 Ω ensures stability and reduces the impact of load variations on the output voltage.

Advantages and Disadvantages

Advantages

• High accuracy and stability
• Low quiescent current for power efficiency
• Small package size for space-constrained designs
• Wide operating temperature range

Disadvantages

• Limited output voltage options (only 2.5V)
• Not suitable for high precision applications requiring extremely low temperature coefficients

Working Principles

The LM385D-2.5R2G utilizes a bandgap voltage reference circuit to generate a stable 2.5V output voltage. This circuit compensates for temperature variations, ensuring consistent performance across a wide temperature range. The low quiescent current and dynamic impedance contribute to the overall stability and accuracy of the voltage reference.

Detailed Application Field Plans

The LM385D-2.5R2G finds applications in various electronic systems where a stable and precise voltage reference is required. Some common application fields include:

1. Analog-to-Digital Converters (ADCs): Providing a reliable reference voltage for accurate conversion.
2. Power Management Systems: Ensuring stable voltage regulation and control.
3. Sensor Interface Circuits: Maintaining precise voltage levels for sensor calibration and measurement.
4. Battery-Powered Devices: Optimizing power efficiency by minimizing quiescent current.

Detailed and Complete Alternative Models

1. LM4040CIZ-2.5: A 2.5V precision shunt voltage reference with a 0.1% initial accuracy.
2. LT1236ACS8-2.5: A 2.5V micropower precision reference with an initial accuracy of ±0.4%.

These alternative models offer similar voltage references with varying accuracies and package options, providing flexibility for different application requirements.

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