Ambiq Micro is a semiconductor company specializing in ultra-low power microcontrollers and AI solutions for battery-powered smart devices. The company's core technology, Subthreshold Power Optimized Technology (SPOT), enables devices to operate at subthreshold power levels, significantly extending battery life. Ambiq's product lineup includes the Apollo4 Plus SoC, featuring an Arm Cortex-M4 core, two MB embedded MRAM, and 2.75 MB SRAM. This chip is designed for always-on AI applications, with current consumption as low as four μA/MHz when executing from MRAM.
In February 2023, Ambiq launched its Neural Spot AI SDK, which combines with the company's sub-threshold and near-threshold technologies to enable efficient AI inference on IoT devices, particularly wearables. The SDK includes optimized libraries based on CMSIS-NN, with added features for fast Fourier transforms and other functionalities. It also offers an open-source model zoo with examples for health and speech detection/processing applications. Ambiq's technology allows for more complex AI models in resource-constrained environments, as demonstrated by their internal benchmarks showing significantly lower energy consumption compared to other Cortex-M4 devices.
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