Bluetooth Audio Module: Microchip BM78SPP05NC2-0002AA Datasheet and Application Overview

The Microchip BM78SPP05NC2-0002AA is a highly integrated Bluetooth v4.2 dual-mode (BR/EDR + BLE) audio module, designed to streamline the development of wireless audio products. This pre-certified module combines a robust Bluetooth controller, a powerful DSP core for audio processing, and comprehensive connectivity options into a single, compact surface-mount package, significantly reducing time-to-market for designers.

Core Technical Specifications

Based on the datasheet, the module's architecture is built around a dedicated PIC32 microcontroller unit, which handles the application layer, and a CSR-core based Bluetooth subsystem. Key features include:

Bluetooth Version: Dual-mode v4.2, supporting both Classic Bluetooth for high-quality audio (A2DP) and Low Energy for efficient data communication.

Audio Support: It comprehensively supports essential audio profiles including A2DP (Advanced Audio Distribution Profile) for stereo music streaming, AVRCP (Audio/Video Remote Control Profile) for device control, and HFP/HSP (Hands-Free Profile/Headset Profile) for telephony applications.

Audio Interfaces: The module features I²S and analog audio interfaces, providing direct connectivity to external DACs, amplifiers, and digital microphones. This flexibility is crucial for achieving high-fidelity audio output.

Processing Power: An integrated DSP handles critical audio functions like echo cancellation and noise suppression, enhancing call clarity.

Supply Voltage: Operates from a 3.3V supply, making it suitable for a wide range of portable and mains-powered devices.

Regulatory Certifications: The module is pre-certified for FCC, IC, and CE, which drastically simplifies the end-product's regulatory approval process.

Primary Applications and Implementation

The BM78SPP05NC2-0002AA is engineered for a diverse set of wireless audio applications. Its primary use cases include:

Wireless Speakers and Headsets: It serves as the core Bluetooth engine for streaming high-quality music from smartphones, tablets, or computers.

Home Audio Systems: Its support for multiple profiles makes it ideal for soundbars, multi-room audio systems, and other modern home entertainment products.

Telematics and Hands-Free Kits: The robust HFP profile and built-in DSP for noise reduction make it perfect for automotive hands-free calling systems and conference phones.

IoT Audio Devices: Its BLE capability allows it to be used in devices that require both audio streaming and low-energy data transfer to a smartphone app.

Implementation is facilitated by Microchip's comprehensive software development kit (SDK) and the BM78 Application Development Tool (ADT). This graphical user interface (GUI) allows developers to configure the module's settings, manage Bluetooth connections, and customize audio parameters without deep low-level programming, accelerating the prototyping phase.

ICGOOODFIND

The Microchip BM78SPP05NC2-0002AA stands out as a mature, reliable, and feature-complete solution for embedding wireless audio capabilities into consumer and industrial products. Its dual-mode Bluetooth functionality, integrated DSP for audio enhancement, and pre-certified status make it a compelling choice for developers seeking to minimize design complexity and accelerate their product's journey to mass production.

Keywords: Bluetooth Audio Module, Dual-Mode Bluetooth, A2DP Profile, Pre-Certified Module, PIC32 Microcontroller.