onsemi ASX340AT2C00XPED0 CMOS Digital Image Sensor: Datasheet, Applications, and Key Features

The onsemi ASX340AT2C00XPED0 is a high-performance 0.33-megapixel (720p) CMOS digital image sensor designed to deliver exceptional image quality and system value for a wide range of applications. Part of onsemi's popular Python family of sensors, this device combines a high-sensitivity, 3.0 µm back-side illuminated (BSI) pixel design with advanced system-level features to meet the demanding requirements of modern imaging systems.

Key Features and Performance

At the core of the ASX340AT2C00XPED0's performance is its BSI pixel technology. This architecture allows the pixel's photosensitive area to be larger, significantly improving low-light sensitivity and angular response compared to traditional front-side illuminated (FSI) sensors. The sensor has an optical format of 1/3" and an active resolution of 648 (H) x 488 (V).

The sensor offers outstanding low-light capability with a signal-to-noise ratio (SNR) of 39 dB and a maximum signal-to-noise ratio of 41.3 dB. It supports a versatile master clock frequency range from 6 MHz to 27 MHz, enabling designers to optimize for either low power consumption or high frame rate performance. The maximum frame rate is 120 frames per second (fps) at full resolution, making it suitable for high-speed capture.

Its low-power architecture is a significant advantage, consuming only 42 mW when operating at 60 fps. This makes it ideal for battery-powered and always-on applications. The integrated on-chip phase-locked loop (PLL) helps simplify system design by eliminating the need for external clock circuits.

Datasheet and Technical Specifications

The official datasheet provides comprehensive details necessary for system integration. Key specifications include:

Resolution: 0.33 MP (720p HD)

Pixel Size: 3.0 µm BSI

Optical Format: 1/3"

Output Interface: 10-bit DVP parallel

Power Consumption: 42 mW @ 60 fps

Max. SNR: 41.3 dB

Operating Temperature Range: -30°C to +85°C

Package: 48-pin iBGA

The datasheet also details the sensor's register set, timing diagrams, and recommended electrical and optical integration practices, which are critical for achieving optimal image quality.

Primary Applications

The combination of high sensitivity, low power, and small form factor opens the door to numerous applications. The ASX340AT2C00XPED0 is particularly well-suited for:

Machine Vision: Its global shutter mode (via a specific variant) and high frame rate are perfect for capturing fast-moving objects without blur.

Barcode Scanning: High sensitivity allows for reliable scanning in dimly lit environments.

Video Surveillance and Security: Excellent low-light performance is crucial for indoor and outdoor security cameras.

Augmented Reality (AR) / Virtual Reality (VR): The small size and low power consumption are ideal for integration into wearable headsets and glasses.

Automotive In-Cabin Sensing: Used for driver monitoring systems (DMS) and occupant sensing, leveraging its robust performance across temperature ranges.

ICGOODFIND Summary

The onsemi ASX340AT2C00XPED0 is a highly versatile and efficient CMOS image sensor that stands out for its superior low-light performance driven by its 3.0 µm BSI pixel technology. Its low-power consumption and high-speed capabilities make it an excellent choice for developers in the machine vision, AR/VR, and security markets seeking a balance of performance, size, and system cost.

Keywords: CMOS Image Sensor, BSI Pixel, Low-Light Sensitivity, Machine Vision, Low Power Consumption