LM385BD-1.2G

Product Overview

Category

LM385BD-1.2G belongs to the category of voltage references.

Use

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

Characteristics

• LM385BD-1.2G provides a stable and accurate output voltage.
• It has low temperature coefficient and excellent long-term stability.
• The device operates over a wide temperature range.
• It is available in a small package, making it suitable for space-constrained applications.

Package

LM385BD-1.2G is typically available in a TO-92 package.

Essence

The essence of LM385BD-1.2G lies in its ability to provide a precise and stable voltage reference, ensuring reliable operation of electronic circuits.

Packaging/Quantity

LM385BD-1.2G is usually packaged in reels or tubes, with quantities varying depending on the manufacturer's specifications.

Specifications

• Output Voltage: 1.2V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 100 ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 40V
• Quiescent Current: 120 µA (typical)

Detailed Pin Configuration

LM385BD-1.2G features three pins:

1. Vout: Output pin providing a stable 1.2V reference voltage.
2. GND: Ground reference for the device.
3. Vin: Input pin connected to the supply voltage.

Functional Features

• LM385BD-1.2G offers a precise and stable voltage reference for use in various electronic circuits.
• It exhibits low power consumption, making it suitable for battery-powered applications.
• The device has a low dropout voltage, enabling it to operate with a wide range of supply voltages.
• LM385BD-1.2G is designed to be highly reliable and provides excellent long-term stability.

Advantages and Disadvantages

Advantages

• Precise and stable output voltage.
• Low temperature coefficient ensures accuracy over a wide temperature range.
• Small package size allows for easy integration into space-constrained designs.
• Low power consumption makes it suitable for battery-powered applications.

Disadvantages

• Limited output voltage options (only 1.2V in this case).
• Requires an external bypass capacitor for optimal performance.

Working Principles

LM385BD-1.2G utilizes bandgap reference technology to generate a stable voltage reference. It employs a combination of bipolar and CMOS technologies to achieve high precision and low temperature coefficient characteristics. The device compensates for changes in temperature and supply voltage, ensuring a consistent and accurate output voltage.

Detailed Application Field Plans

LM385BD-1.2G finds application in various electronic systems where a precise and stable voltage reference is required. Some common application areas include:

1. Analog-to-Digital Converters (ADCs)
2. Digital-to-Analog Converters (DACs)
3. Voltage regulators
4. Precision measurement equipment
5. Battery management systems
6. Sensor calibration circuits

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to LM385BD-1.2G. Some notable alternatives include:

1. LM4040: A series of precision voltage references with different output voltage options.
2. LT6654: Ultra-precision voltage reference with extremely low drift and noise characteristics.
3. REF50xx: High-precision voltage references with low temperature coefficient and excellent long-term stability.

These alternative models provide designers with a range of options to suit their specific requirements.

In conclusion, LM385BD-1.2G is a voltage reference device that offers precise and stable output voltage, low temperature coefficient, and excellent long-term stability. Its small package size and low power consumption make it suitable for various electronic applications. However, it has limited output voltage options and requires an external bypass capacitor for optimal performance. The device operates based on bandgap reference technology and finds application in ADCs, DACs, voltage regulators, and other precision measurement systems. Alternative models such as LM4040, LT6654, and REF50xx provide additional choices for designers seeking similar functionality.