company blog about Supply/Recycle Microparity MPX106Q High-Precision Single-Photon Detection Sensor SoC Chip Utilising Narrow-Pulse Laser Signals

Supply/Recycle Microparity MPX106Q High-Precision Single-Photon Detection Sensor SoC Chip Utilising Narrow-Pulse Laser Signals

Shenzhen Mingjiada Electronics Co., Ltd. is a renowned distributor of electronic components, supplying and recycling the MPX106Q high-precision single-photon detection sensor SoC chip designed for narrow-pulse laser signals.

I. MPX106Q Chip Overview: An Integrated Innovation in Single-Photon Detection

The MPX106Q is a high-precision single-photon detection sensor SoC chip employing an SPAD-SoC (Single-Photon Avalanche Diode System-on-Chip) architecture. It integrates an SPAD array, quenching circuitry, a high-precision time-to-digital converter (TDC), a digital signal processor (DSP), and storage units onto a single chip, establishing a fully digital processing chain from photon detection to signal output. Its core innovation lies in incorporating narrow-pulse laser signal detection technology. By capturing signals at the single-photon level, it overcomes the accuracy limitations of traditional sensors in low-light environments and long-range detection scenarios, delivering highly reliable sensing solutions for applications including lidar, industrial inspection, and consumer electronics.

II. MPX106Q Core Technology: Synergistic Advantages of Narrow-Pulse Lasers and Single-Photon Detection

1. Technical Empowerment of Narrow-Pulse Laser Signals

The MPX106Q employs a narrow-pulse laser with a linewidth below 1GHz as its detection source. Combined with seed-injected frequency-stabilisation technology, it achieves single-longitudinal-mode laser output, enhancing its coherence length by over 30 times compared to conventional wide-linewidth lasers. This narrow-pulse characteristic delivers three core advantages:

Breakthrough in Distance Resolution: Compressing laser pulse width to sub-nanosecond levels, coupled with the picosecond-grade time sampling precision of the TDC, controls distance measurement error within ±1mm – far exceeding industry averages.

Enhanced Interference Resistance: The narrow linewidth reduces multipath reflection interference and electromagnetic noise impact. In complex environments such as bright light or fog/rain, the signal-to-noise ratio (SNR) improves by 40% compared to conventional solutions. Extended Detection Range: Leveraging the energy-focusing properties of high-power narrow-pulse lasers, combined with the SPAD array's high photon detection efficiency (PDE > 85% at 532nm wavelength), enables stable capture of faint signals beyond 250 metres, meeting long-range detection requirements.

2. Full Digital Advantages of SPAD-SoC Architecture

The MPX106Q continues the MP series' high-integration design, employing 3D stacking technology to vertically integrate millions of SPAD detection units with processing circuits. This reduces chip area by 60% and power consumption by 45% compared to discrete solutions. Its fully digital architecture features two key highlights:

Real-time Signal Processing: An on-chip DSP with dedicated photon-counting algorithms performs real-time filtering, noise reduction, and point cloud generation on raw detection data. This eliminates analogue-to-digital conversion losses, achieving processing delays as low as 50ns.

Intelligent Zone Detection: Supports 2D addressable zone functionality, dynamically adjusting detection areas and sensitivity for diverse scenarios. This effectively addresses high-reflectivity contamination issues while meeting multi-target recognition demands in complex environments.

Furthermore, the MPX106Q chip incorporates an integrated temperature compensation module and crosstalk suppression circuitry. By dynamically adjusting bias voltage and detection cell operating points, it maintains stable performance across a wide temperature range of -40°C to 85°C, with dark count rates controlled below 100Hz, ensuring detection accuracy in extreme environments.

III. MPX106Q Performance Parameters and Industry Applications

1. Core Performance Metrics

Detection Unit Configuration: 128×160 SPAD array (20,480 pixels)

Time Resolution: <50ps (TDC sampling precision)

Range Measurement: 0.1m–250m (10% reflectivity target)

Range Accuracy: ±1mm (within 10m), ±3mm (within 100m)

Laser Pulse Width: 500ps (half-width)

Power Consumption Level: <300mW (typical operating mode)

Operating Temperature Range: -40°C to 85°C

Output Interface: MIPI CSI-2 (supports 4-lane data transmission)

2. Diverse Application Scenarios

LiDAR Applications: Suitable for primary and blind-spot radar systems in Level 3+ autonomous driving, enabling precise obstacle detection within 300 metres. Supports high-speed navigation assistance and automated parking functions. Enhances navigation and obstacle avoidance reliability in service robots and robotic lawnmowers through environmental modelling and path planning.

Consumer Electronics: Serves as rapid-focus modules for laser televisions/projectors, achieving <15ms focus response in low-light conditions; enables 3D scene perception for AR/VR devices, constructing immersive interactions through multi-zone ranging.

Industrial and Medical Applications: Suitable for minute distance measurement in industrial precision inspection (e.g., PCB thickness detection) and AGV obstacle avoidance/localisation. In medical imaging, serves as the detection core for Raman spectrometers and super-resolution microscopes, enhancing biological tissue imaging accuracy.

IV. MPX106Q Technical Trends and Market Value

The rapid advancement of autonomous driving, robotics, and XR technologies has intensified demand for high-precision, miniaturised, and cost-effective sensors. By deeply integrating narrow-pulse laser technology with SPAD-SoC architecture, the MPX106Q overcomes performance limitations of traditional detection solutions, paving the way for widespread adoption of consumer-grade and industrial-grade LiDAR systems.

Moving forward, the MPX106Q will further optimise photon detection efficiency and algorithmic processing capabilities. An upgraded version supporting ranges exceeding 300 metres is planned, alongside expansion into high-end applications such as quantum communication and deep-space exploration. As a pivotal vehicle for the industrialisation of single-photon detection technology, the MPX106Q is driving the laser sensing sector's transition from a ‘performance-first’ approach towards a ‘cost-performance equilibrium’. This advancement empowers intelligent devices to achieve more precise and reliable environmental perception capabilities.