LM235AH

Product Overview

LM235AH is a precision temperature sensor belonging to the category of integrated circuits. It is commonly used for temperature measurement and control in various electronic devices. The sensor exhibits high accuracy, low power consumption, and a compact package, making it suitable for a wide range of applications. The LM235AH is typically available in a standard TO-46 metal can package and is sold individually.

Specifications

• Temperature Range: -40°C to 125°C
• Output Voltage: 10 mV/°C
• Supply Voltage: 4V to 30V
• Current Consumption: 120 µA
• Package Type: TO-46 metal can

Detailed Pin Configuration

The LM235AH features three pins: 1. V+ (Pin 1): Supply voltage input 2. Vout (Pin 2): Output voltage proportional to temperature 3. GND (Pin 3): Ground connection

Functional Features

The LM235AH operates by converting temperature into an analog voltage output, with a linear scale factor of 10 mV/°C. This allows for precise temperature measurements within the specified range. The sensor's low power consumption and high accuracy make it ideal for applications requiring reliable temperature sensing.

Advantages and Disadvantages

Advantages

• High accuracy
• Low power consumption
• Linear output
• Wide temperature range

Disadvantages

• Limited temperature range compared to some alternatives
• Requires external calibration for optimal accuracy

Working Principles

The LM235AH utilizes the principle of bandgap temperature sensing, where the base-emitter voltage of a bipolar transistor is used to generate a temperature-dependent voltage. This voltage is then amplified and scaled to provide an accurate representation of the ambient temperature.

Detailed Application Field Plans

The LM235AH finds extensive use in various applications, including: - HVAC systems - Industrial process control - Automotive climate control - Medical equipment - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the LM235AH include: - LM335: Offers a wider temperature range and improved linearity - TMP36: Provides a lower operating voltage and higher accuracy - DS18B20: Digital temperature sensor with programmable resolution

In conclusion, the LM235AH is a versatile and reliable temperature sensor that caters to a broad spectrum of temperature measurement and control needs. Its high accuracy, low power consumption, and compact form factor make it a preferred choice for many electronic applications.

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