🟩 Product Description

The LX1972 Ambient Light Sensor IC is a silicon-based light sensor designed to closely match the spectral response of the human eye. Its built-in circuitry is tuned to peak around 520 nm, while keeping IR sensitivity extremely low (less than ±5% above 900 nm). This makes the LX1972 ideal for applications where light detection must behave similarly to natural human vision — such as display backlight control and ambient light compensation systems.

The device uses an integrated PIN photodiode array with a highly linear and repeatable output current response. The internal high-gain current mirrors amplify the photo-current to a useful level. The output current can be easily converted to a voltage using a single external resistor, making the LX1972 simple and cost-effective to use.

The sensor operates reliably from 1.8V headroom at 1000 Lux, supports a usable light range from 1 to over 5000 Lux, and includes temperature compensation to maintain accuracy — keeping dark current below 200 nA across the full temperature range of -40°C to +85°C.

This makes the LX1972 ideal for automatic brightness control and energy-efficient display backlighting in consumer and portable electronics.

⭐ Features

• Spectral response similar to the human eye

• Very low IR sensitivity

• Accurate and repeatable output current

• Output easily scaled using external resistor

• Temperature-stable operation

• Integrated high-gain photocurrent amplifier

• No external optical filters required

• Operates from low supply voltages

🔧 Applications

• Ambient light detection

• LCD TV backlight dimming

• Notebook & tablet display brightness control

• Portable electronic displays

• Digital cameras

• Desktop monitors

📦 Package Includes

• 1 x LX1972 Ambient Light Sensor IC

Note: Images are for representation only. Actual product appearance may slightly vary.