SI7021-A20-GM1R

Product Overview

Category

The SI7021-A20-GM1R belongs to the category of environmental sensors.

Use

It is used for measuring temperature and relative humidity in various applications.

Characteristics

• High accuracy
• Low power consumption
• Digital output
• Integrated on-chip heater
• Fast response time

Package

The SI7021-A20-GM1R comes in a small package suitable for surface mount applications.

Essence

The essence of this product lies in its precise and reliable measurement of temperature and humidity, making it ideal for applications requiring environmental monitoring.

Packaging/Quantity

The SI7021-A20-GM1R is typically available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Temperature Range: -10°C to 85°C
• Humidity Range: 0% to 100% RH
• Accuracy:
  • Temperature: ±0.4°C
  • Humidity: ±3% RH
• Supply Voltage: 1.9V to 3.6V
• I2C Interface

Detailed Pin Configuration

The SI7021-A20-GM1R has a 6-pin configuration as follows: 1. VDD (Power supply) 2. SDA (I2C data line) 3. SCL (I2C clock line) 4. ALERT (Interrupt output) 5. GND (Ground) 6. NC (No connection)

Functional Features

• High-precision temperature and humidity sensing
• I2C communication interface for easy integration
• On-chip heater for dew point measurements
• Low power consumption for battery-operated devices

Advantages and Disadvantages

Advantages

• Accurate and reliable measurements
• Low power consumption
• Small form factor
• Integrated heater for dew point calculations

Disadvantages

• Limited temperature range compared to some other sensors
• Higher cost compared to basic temperature/humidity sensors

Working Principles

The SI7021-A20-GM1R utilizes a capacitive sensing element to measure relative humidity, while a band-gap temperature sensor is used for temperature measurements. The integrated analog-to-digital converter provides digital outputs for both temperature and humidity readings.

Detailed Application Field Plans

The SI7021-A20-GM1R is widely used in various applications including: - HVAC systems - Weather stations - Industrial automation - Consumer electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models to the SI7021-A20-GM1R include: - SHT21 - HDC1080 - BME280 - HTU21D

In conclusion, the SI7021-A20-GM1R is a highly accurate and reliable environmental sensor suitable for a wide range of applications, despite its limitations in temperature range and cost compared to other sensors.

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