AMA3B1KK-KQR-B0

Overview

The AMA3B1KK-KQR-B0 is an ultra-low power system on a chip (SoC) from the Apollo3 Blue family, manufactured by Ambiq Micro. It integrates an Arm Cortex-M4F processor with Floating Point Unit operating up to 96 MHz via turboSPOT technology. The device features 1MB of flash memory and 384KB of low power RAM. It includes an integrated Bluetooth Low Energy 5 radio module. The component operates within a voltage range of 1.755V to 3.63V and supports temperatures from -40°C to 85°C. It is housed in a 64-pin QFN package measuring 8 mm x 8 mm.

Feature Summary

• Ultra-low power architecture based on Subthreshold Power Optimized Technology for extended battery life
• Integrated Bluetooth Low Energy 5 connectivity platform with dedicated second core
• Supports always-on voice assistant integration through Voice-on-SPOT reference platform
• Includes advanced stepper motor control and DMA engine for efficient peripheral management

Applications

• Voice-on-SPOT compatible keyword detection and audio command recognition
• Bluetooth headsets, earbuds, and truly wireless earbuds
• Smart watches and fitness/activity trackers
• Hearing aids and digital health monitoring devices

Procurement Notes

Verify the specific ordering suffix KQR-B0 against official manufacturer documentation to confirm the 64-pin QFN package configuration. Ensure compatibility with the required operating temperature range and voltage specifications for the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when designing battery-powered wearable or IoT devices requiring high energy efficiency combined with Bluetooth Low Energy 5 connectivity. The integrated FPU and turboSPOT mode provide sufficient processing power for complex algorithms while maintaining ultra-low active current consumption suitable for long-term portable operation.

Part Context

This part belongs to the Apollo3 Blue series of Ambiq Micro's SoC portfolio. It shares the same core processor and memory architecture as other variants like the BGA and WLCSP packages but differs in physical footprint and pin count due to the QFN packaging option.

Replacement Considerations

Direct pin-compatible replacements are not explicitly listed in the provided documentation. Consider evaluating other Apollo3 Blue variants such as AMA3B1KK-KCR-B0 if package constraints allow, though pin mapping differences must be addressed during redesign.