LM285D-1.2G

Product Overview

Category

The LM285D-1.2G belongs to the category of voltage references.

Use

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

Characteristics

• High accuracy and stability
• Low temperature coefficient
• Low dropout voltage
• Wide operating temperature range

Package

The LM285D-1.2G is available in a small SOT-23 package, which is suitable for surface mount applications.

Essence

This product serves as a precise voltage reference, providing a stable output voltage regardless of changes in input voltage or load conditions.

Packaging/Quantity

The LM285D-1.2G is typically 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
• Dropout Voltage: 60mV (typical)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 16V

Detailed Pin Configuration

The LM285D-1.2G has three pins:

1. VOUT: Output pin, provides a stable 1.2V reference voltage.
2. GND: Ground pin, connected to the common ground of the circuit.
3. VIN: Input pin, receives the supply voltage for the device.

Functional Features

• Precise Voltage Reference: The LM285D-1.2G ensures a highly accurate and stable output voltage of 1.2V.
• Low Dropout Voltage: With a low dropout voltage of only 60mV, it can operate efficiently even with low input voltages.
• Wide Operating Temperature Range: The device can function reliably in a wide range of temperatures, from -40°C to +85°C.
• Low Temperature Coefficient: The LM285D-1.2G exhibits a low temperature coefficient of 100 ppm/°C, ensuring minimal voltage drift with temperature changes.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure precise voltage references in electronic circuits.
• Low dropout voltage allows for efficient operation even with low input voltages.
• Wide operating temperature range enables reliable performance in various environments.
• Small SOT-23 package facilitates surface mount applications.

Disadvantages

• Limited output voltage options (only 1.2V in this case).
• Requires an external power supply.

Working Principles

The LM285D-1.2G utilizes bandgap reference technology to generate a stable output voltage. It compensates for temperature variations by using a combination of base-emitter voltage and temperature-dependent current sources. This ensures that the output voltage remains constant over a wide temperature range.

Detailed Application Field Plans

The LM285D-1.2G finds applications in various fields, including:

1. Precision Analog Circuits: It is commonly used as a voltage reference in precision analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and operational amplifiers (op-amps).
2. Power Management Systems: The device can be employed in power management systems to provide accurate voltage references for voltage regulators and power supplies.
3. Sensor Interfaces: It is utilized in sensor interface circuits where precise voltage references are required for accurate measurements.
4. Battery-Powered Devices: The LM285D-1.2G's low dropout voltage makes it suitable for battery-powered devices, such as portable electronics and wireless communication systems.

Detailed and Complete Alternative Models

Some alternative models to the LM285D-1.2G include:

1. LM4040: A series of precision voltage references with various output voltage options.
2. LT6654: A family of ultra-precise voltage references with low temperature drift and high accuracy.
3. REF50xx: Precision voltage references featuring low dropout voltage and excellent long-term stability.

These alternative models offer similar functionality and can be considered based on specific requirements and application needs.

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