New Product | Maxic Unveils MT3228: High-Sensitivity, High-Sampling Rate ALS + Flicker Sensor

    • Release Date2026-05-11

    • Page View66 times


    With continuous advancements in rear camera performance for smartphoness, interference caused by screen flicker and lighting flicker is becoming increasingly severe. Flicker that is imperceptible to the human eye not only degrades imaging quality but may also impact visual health. Consequently, device manufacturers are placing higher demands on precise light sensing, real-time flicker mitigation, stable exposure, and fast response.

    Conventional Ambient Light Sensors (ALS) are limited by narrow flicker detection bandwidth, insufficient low-light performance, and poor anti-flicker capability, making them inadequate for complex scenarioses such as high-frequency displays, high-frequency LED flash, and low-light night imaging. As a result, market demand for high-performance rear-facing dedicated ALS + Flicker sensors is rapidly increasing.

    Leveraging its deep expertise in optical sensing, Maxic has launched the MT3228, a high-sensitivity, high-sampling-rate ALS + Flicker sensor. MT3228 integrates an ultra-wideband flicker detection channel exceeding 20kHz, significantly enhancing low-light sensitivity and response performance. It effectively covers the flicker frequency range of mainstream displays and lighting sources while also providing precise ambient light sensing capability.

    Maxic Unveils MT3228.jpg

    MT3228 is a highly integrated ambient light and flicker detection sensor featuring CMOS process technology and optical package design, offering low power consumption and compact package. MT3228 integrates multi-channel photodiodes, ADC circuitry, and a digital signal processing unit, supporting parallel ALS and Flicker output.

    With an expansive dynamic range from 0.005lux to 200klux and the flicker sampling frequency ≥20kHz (up to 42kHz), MT3228 supports an I²C digital interface. It is well suited for smartphoness, tablets, laptops, wearable devices, and other mobiles terminals and display applications with stringent space and power constraints.


    Features

    • Supports independent and simultaneous sampling for both ALS and Flicker detection.

    • Fully digital control with I²C interface, standby current as low as 0.5μA

    • Ambient light detection range: 0.005lux to 200klux

    • Flicker sampling frequency: ≥20kHz (up to 42kHz)

    • Flicker sensitivity: <1mlux/count@20kHz

    • Modulation depth: <1:20000

    • Supports hardware and software clock calibration, frequency accuracy <±0.25%

    • 16-bit or 24-bit digital data output

    • Fast response with programmable gain control: 0.5× to 1024×

    • Lead-free OLGA6 package, ultra-compact size: 2.25mm×1.15mm×0.5mm

    Highlights

    ■  Ultra-High Sensitivity, Stable Response under Extremely Low Light

    MT3228 adopts a high-sensitivity photodiode and low-noise amplifier architecture, combined with programmable gain control ranging from 0.5× to 1024×, effectively enhancing the signal-to-noise ratio under low-light conditions. The minimum detectable illuminance is 0.005lux, enabling stable ALS output even in extremely dark environments such as starlight conditions. This supports truly stepless dimming adjustment and precise automatic brightness control in low-light scenarioses.

    ■  Parallel ALS and Flicker Detection for Simultaneous Precision Sensing

    MT3228 integrates independent ambient light sensing and flicker detection channels, supporting parallel sampling without the need for time-division multiplexing. Compared with the time-sharing switching modes used in conventional sensors, this approach eliminates data latency and frame-loss issues, enabling continuous and synchronized output of ambient brightness, flicker frequency, and flicker intensity information. It is well suited for applications such as camera preview anti-flicker and display flicker warning applications.

    ■  Wideband Flicker Detection Covering Mainstream Interference Sources

    MT3228 supports a flicker sampling frequency exceeding 20kHz (up to 42kHz), providing full-band flicker detection for various light sources, including LED lighting, high-frequency PWM displays, and fluorescent lamps. The sensor accurately outputs flicker frequency and intensity data, providing reliable technical support for smartphones rear-camera anti-flicker imaging and eye-comfort alert applications.

    ■ High Linearity with Human-Eye-Matched Spectral Response

    MT3228 integrates a precision optical filter that effectively suppresses ultraviolet (UV) and infrared (IR) interference, preventing false detection caused by invisible light and enabling a spectral response curve closely aligned with human visual perception. In addition, the sensor maintains high linearity across varying ambient light conditions, ensuring accurate and reliable ALS data over the full detection range and providing a dependable basis for seamless smartphones display brightness adjustment.

    ■ Low Power Consumption and Compact Package for Space-Constrained Devices

    MT3228 adopts an advanced CMOS process and low-power architecture, with flicker detection operating current as low as 246μA and standby current of only 0.5μA. Housed in a miniature OLGA6 package measuring just 2.25mm x 1.15mm x 0.5mm, the sensor offers a minimal PCB footprint. This compact design is ideal for space-constrained applications such as smartphoness and wearable devices.

    ■  Flexible Software Configuration for Simplified System Integration

    MT3228 supports flexible configuration of sampling rate and gain settings, allowing dynamic adjustment of operating parameters based on different application scenarioses. Its convenient software configurability streamlines system integration and development processes, enabling manufacturers to rapidly adapt the sensor across various end products and improve development efficiency.

    *The test results referenced herein are obtained under laboratory conditions. Actual product performance may vary depending on application environments and production variations. Maxic Technology reserves the right of final interpretation.

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