LM385BZ-2.5G

Product Overview

Category

The LM385BZ-2.5G belongs to the category of voltage references.

Use

It is commonly used as a precision voltage reference in various electronic circuits.

Characteristics

• Provides a stable and accurate voltage reference of 2.5V.
• Low temperature coefficient ensures minimal voltage drift over a wide temperature range.
• High initial accuracy allows for precise voltage regulation.
• Low power consumption makes it suitable for battery-powered applications.

Package

The LM385BZ-2.5G is available in a TO-92 package, which is a small plastic casing with three leads.

Essence

The essence of LM385BZ-2.5G lies in its ability to provide a reliable and consistent voltage reference for electronic systems.

Packaging/Quantity

This product is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Voltage Reference: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 20ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 1.2V to 12V
• Quiescent Current: 120µA (typical)

Detailed Pin Configuration

The LM385BZ-2.5G has three pins:

1. Vout: Output pin providing a stable 2.5V reference voltage.
2. GND: Ground connection for the circuit.
3. Vin: Input pin connected to the supply voltage.

Functional Features

• Precise Voltage Reference: The LM385BZ-2.5G ensures a stable and accurate 2.5V output voltage, making it suitable for applications requiring precise voltage regulation.
• Low Power Consumption: With a quiescent current of only 120µA, it is ideal for power-sensitive devices and battery-powered applications.
• Wide Temperature Range: The LM385BZ-2.5G maintains its voltage accuracy over a wide temperature range, from -40°C to +85°C.
• Easy Integration: Its compact TO-92 package allows for easy integration into various circuit designs.

Advantages and Disadvantages

Advantages

• High initial accuracy ensures precise voltage regulation.
• Low temperature coefficient minimizes voltage drift with temperature changes.
• Low power consumption extends battery life in portable devices.
• Compact package enables easy integration into circuits.

Disadvantages

• Limited output voltage options (fixed at 2.5V).
• Not suitable for applications requiring adjustable voltage references.

Working Principles

The LM385BZ-2.5G utilizes bandgap voltage reference technology to generate a stable 2.5V output. It compensates for temperature variations by employing a proportional-to-absolute-temperature (PTAT) current source and a negative temperature coefficient (NTC) resistor. This design ensures that the output voltage remains relatively constant over a wide temperature range.

Detailed Application Field Plans

The LM385BZ-2.5G finds application in various electronic systems, including:

1. Precision Analog Circuits: It provides a stable voltage reference for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and operational amplifiers (op-amps).
2. Voltage Regulation: It can be used as a voltage reference in voltage regulators to maintain a stable output voltage.
3. Battery-Powered Devices: The low power consumption makes it suitable for use in portable devices such as smartphones, tablets, and wearable electronics.
4. Industrial Control Systems: It is employed in industrial control systems where precise voltage references are required for accurate measurements and control.

Detailed and Complete Alternative Models

Some alternative models to LM385BZ-2.5G include:

1. LM4040: A series of precision voltage references available in various output voltages.
2. LT1021: Precision reference with low temperature drift and high initial accuracy.
3. REF30xx: Voltage references with adjustable output voltages.

These alternatives offer different features and specifications, allowing users to choose the most suitable option for their specific application requirements.

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