SI1142-A10-GM

Product Overview

Use

This sensor is designed to accurately measure ambient light and detect proximity, making it suitable for various applications such as display backlight control, gesture recognition, and proximity sensing in electronic devices.

Characteristics

Ambient light sensing with high sensitivity and wide dynamic range
Proximity detection with excellent cross-talk immunity
Integrated infrared LED driver
Low power consumption
Small form factor for easy integration into compact designs

Package

The SI1142-A10-GM is available in a compact package suitable for surface mount assembly, enhancing its versatility for different design requirements.

Essence

The essence of the SI1142-A10-GM lies in its ability to provide accurate ambient light sensing and reliable proximity detection in a small and efficient package.

Packaging/Quantity

The sensor is typically supplied in tape and reel packaging, with quantities tailored to meet the needs of various production volumes.

Specifications

Ambient Light Sensing Range: 0.01 lux to 128,000 lux
Proximity Detection Range: Up to 100mm
Supply Voltage: 1.7V to 3.6V
Current Consumption: 1.6µA (Ambient Light Sensing), 5.4mA (Proximity Sensing)
Communication Interface: I2C

Detailed Pin Configuration

The SI1142-A10-GM features a compact pin configuration, including power supply, communication interface, and sensor input/output pins. The detailed pinout is as follows:

| Pin Name | Function | |----------|----------------| | VDD | Power Supply | | SDA | I2C Data Line | | SCL | I2C Clock Line | | INT | Interrupt | | GND | Ground |

Functional Features

Ambient Light Sensing: The sensor utilizes integrated photodiodes to accurately measure ambient light levels across a wide range.
Proximity Detection: By emitting and detecting infrared light, the sensor can reliably detect the presence of objects in close proximity.
Integrated LED Driver: The built-in LED driver simplifies the design of proximity sensing applications by providing control over the infrared light source.

Advantages and Disadvantages

Advantages

High sensitivity and accuracy in ambient light sensing
Reliable proximity detection with minimal cross-talk interference
Low power consumption for extended battery life in portable devices
Compact form factor for seamless integration into various product designs

Disadvantages

Limited proximity detection range compared to some alternative models
Higher current consumption during proximity sensing compared to ambient light sensing

Working Principles

The SI1142-A10-GM operates based on the principles of photometry and infrared reflection. When measuring ambient light, the integrated photodiodes convert incoming light into electrical signals, allowing precise determination of light intensity. For proximity detection, the sensor emits infrared light and measures the reflected signal to determine the presence or absence of nearby objects.

Detailed Application Field Plans

The SI1142-A10-GM is well-suited for integration into a wide range of electronic devices, including: - Smartphones and tablets for automatic display brightness adjustment - Wearable devices for gesture recognition and proximity-based interactions - Industrial and automotive applications for object detection and proximity sensing

Detailed and Complete Alternative Models

For users seeking alternative ambient light and proximity sensors, several models offer comparable features and performance, including: - SI1133-A10-GM: A similar sensor with extended ambient light sensing range - APDS-9930: An alternative sensor offering gesture recognition capabilities in addition to ambient light and proximity sensing - TSL2591: A high-precision ambient light sensor with advanced digital output options

In conclusion, the SI1142-A10-GM offers a versatile solution for accurate ambient light sensing and reliable proximity detection in a compact and efficient package. Its high sensitivity, low power consumption, and integrated LED driver make it an ideal choice for various electronic applications.

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