AWL5963 helps reduce power supply noise for drone video transmission systems.
Imagine you are shooting aerial footage with a drone, only to encounter stuttering or pixelated images. This greatly ruins the shooting experience. Such issues are mostly caused by power supply noise, which degrades video transmission signals through various paths.
With the rapid growth of consumer and industrial drone markets, video transmission systems featuring high definition, low latency and strong anti-interference capability have become core competitiveness. Whether it is 4K real-time video streaming for aerial photography enthusiasts, or the strict requirements for continuous images in power line inspection, emergency rescue and other professional scenarios, the performance of video transmission modules directly determines user experience and mission outcomes.
Modern drone video transmission mainly operates on 2.4GHz or 5.8GHz frequency bands, adopting high-order modulation schemes such as 256-QAM and even 1024-QAM to improve bandwidth efficiency. These modulation methods are extremely sensitive to power supply noise. Any ripple superimposed on the power rails of power amplifiers (PA) or voltage-controlled oscillators (VCO) will turn into phase noise directly, resulting in constellation diagram dispersion, higher bit error rate, and eventually image stuttering, pixelation or even signal loss.
According to the LT1963 datasheet, its output noise is 40 μV RMS within the frequency range of 10 Hz to 100 kHz. This noise level was acceptable for early analog video transmission systems, yet it has reached the performance limit for today’s digital high-definition video transmission. To tackle this problem, AnalogWin launched the AWL5963, a low-noise LDO regulator specially designed for drone video transmission applications. The AWL5963 reduces output noise down to 15 μV RMS, just one-third of LT1963. This outstanding performance benefits from its built-in low-noise reference and optimized error amplifier architecture.
On the same 5.8GHz video transmission module platform, the adoption of AWL5963 improves the receiver signal-to-noise ratio (SNR) by approximately 2.5 dB and cuts the bit error rate by an order of magnitude. In complex electromagnetic environments such as dense urban areas and near high-voltage lines, image stability is greatly enhanced, with frame stutters reduced by over 40%. Apart from static noise performance, transient response is also critical. Drone video data streams are highly bursty. When gimbal rotation, auto-focus or AI recognition is activated, the video encoder will output high-bitrate data instantly and cause a sharp rise in RF power consumption. Equipped with wider loop bandwidth and optimized compensation network, AWL5963 achieves output voltage overshoot below 25 mV and recovery time shorter than 8 μs under 100mA step load, keeping the video transmission link stable under dynamic working conditions.
Drones are highly demanding on weight and PCB space when replacing LT1963. The AWL5963 works stably with only one small ceramic capacitor, requiring no additional feedforward or bypass capacitors and saving valuable PCB space. Its SOP8L package is fully pin-compatible with the SO-8 package of LT1963, with corresponding pins for input, output, ground and enable.
In a practical replacement test, an industrial drone manufacturer simply replaced LT1963 with AWL5963 without any hardware or software modifications. Longer transmission range and better image quality were achieved, and the overall verification cycle was shortened to just four days. Beyond performance improvement, it also strengthens supply chain resilience. Currently, the lead time of LT1963 is generally over 30 weeks. Affected by international logistics and export controls, it faces potential supply disruptions. In contrast, AWL5963 is independently developed by a domestic team, with wafer fabrication, packaging and testing all completed domestically to realize full-link autonomy and controllability from design to delivery. Via authorized distributors including Mandu Technology, customers can receive samples within 3 days at the fastest, and mass orders can be delivered stably within 4 weeks, fully supporting time-sensitive projects.
Featuring ultra-low noise of 15 μV RMS, the AWL5963 delivers clearer images and more stable transmission for drone video transmission. Meanwhile, its fast transient response, compact peripheral circuit, full pin compatibility and reliable local supply make it a high-performance, low-risk and highly reliable power solution for drone manufacturers. Driven by the trends of high definition, intelligence and localization, choosing AWL5963 means equipping every flight with a more reliable visual perception system.