DS2438AZ/T&R

Product Overview

• Category: Integrated Circuit
• Use: Measurement and Control
• Characteristics: Digital Thermometer and Voltmeter
• Package: SOT-23
• Essence: Temperature and Voltage Monitoring IC
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Temperature Range: -55°C to +125°C
• Voltage Range: 0V to 5.5V
• Resolution: 9-bit temperature, 12-bit voltage
• Accuracy: ±2°C (temperature), ±1% (voltage)
• Interface: 1-Wire® Bus

Pin Configuration

The DS2438AZ/T&R has the following pin configuration:

____ VDD | | GND | | DQ | | NC |____|

• VDD: Power Supply
• GND: Ground
• DQ: Data Input/Output
• NC: No Connection

Functional Features

• Measures temperature and voltage accurately
• Provides digital output for easy interfacing
• Supports 1-Wire® bus communication protocol
• Low power consumption
• Built-in programmable alarm thresholds

Advantages

• Compact SOT-23 package for space-constrained applications
• Wide operating temperature range
• High resolution and accuracy
• Simple 1-Wire® interface for easy integration
• Programmable alarm feature for temperature and voltage monitoring

Disadvantages

• Limited to temperature and voltage measurements only
• Requires external components for additional functionality

Working Principles

The DS2438AZ/T&R operates by sensing the temperature using an integrated temperature sensor and measuring the voltage using an internal ADC. It communicates with the host system through the 1-Wire® bus, providing digital temperature and voltage readings. The device can be powered directly from the bus, eliminating the need for an external power supply.

Application Field Plans

The DS2438AZ/T&R is commonly used in various applications, including:

1. Battery monitoring systems
2. HVAC systems
3. Industrial automation
4. Energy management systems
5. Environmental monitoring

Alternative Models

• DS18B20: Digital thermometer with higher temperature resolution
• DS2450: Quad A/D converter with additional analog inputs
• DS2437: Battery monitor with integrated current measurement

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