LM285Z-1.2G

Product Overview

Category

The LM285Z-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 power consumption
• Wide operating voltage range

Package

The LM285Z-1.2G is available in a TO-92 package, which is a small plastic package with three leads.

Essence

The essence of LM285Z-1.2G lies in its ability to provide a stable and accurate voltage reference for precise circuit operation.

Packaging/Quantity

The LM285Z-1.2G is typically packaged in reels or tubes, containing a quantity of 1000 units per reel/tube.

Specifications

• Output Voltage: 1.2V
• Initial Accuracy: ±1%
• Temperature Coefficient: 50ppm/°C
• Operating Voltage Range: 2.7V to 40V
• Quiescent Current: 120µA

Detailed Pin Configuration

The LM285Z-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 reference.

Functional Features

• Precise Voltage Reference: The LM285Z-1.2G ensures a stable and accurate 1.2V output voltage, enabling precise circuit operation.
• Low Power Consumption: With a quiescent current of only 120µA, it minimizes power consumption in the circuit.
• Wide Operating Voltage Range: It can operate within a wide voltage range of 2.7V to 40V, making it suitable for various applications.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure reliable circuit performance.
• Low temperature coefficient minimizes voltage variations with temperature changes.
• Low power consumption helps conserve energy in the system.
• Wide operating voltage range allows for versatile application possibilities.

Disadvantages

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

Working Principles

The LM285Z-1.2G utilizes a bandgap reference circuit to generate a stable 1.2V output voltage. This circuit compensates for temperature variations, ensuring accurate voltage reference over a wide temperature range. By comparing the internal reference voltage with an external resistor network, it provides a precise output voltage.

Detailed Application Field Plans

The LM285Z-1.2G finds applications in various fields, including:

1. Precision Analog Circuits: It is used as a voltage reference in analog-to-digital converters, digital-to-analog converters, and operational amplifiers to maintain accuracy.
2. Power Supply Regulation: It serves as a stable reference voltage for voltage regulators, ensuring consistent output voltages.
3. Sensor Calibration: The LM285Z-1.2G is employed in sensor circuits to provide a precise reference voltage for calibration purposes.
4. Battery Management Systems: It is utilized in battery monitoring circuits to establish accurate voltage thresholds for charging and discharging operations.

Detailed and Complete Alternative Models

Some alternative models to LM285Z-1.2G include:

1. LM4040: A series of precision voltage references available in different output voltages.
2. LT1021: A high-precision voltage reference with low temperature drift.
3. REF02: A two-terminal precision voltage reference with excellent long-term stability.

These alternatives offer similar functionality and can be chosen based on specific requirements and availability.

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