Microchip Technology BM20 & BM23 Bluetooth® 4.1 Stereo Audio Modules

Microchip Technology BM20 and BM23 Bluetooth^® 4.1 Stereo Audio Modules provide a complete wireless solution with BLUETOOTH® stack, integrated antenna, and worldwide radio certification. These BLUETOOTH® SIG-certified modules feature transparent UART mode, internal battery regulatory circuit, and support Serial Copy Management System-T (SCMS-T). The BM23 stereo audio modules support digital audio, and the BM20 stereo modules support analog outputs. These compact surface mount modules can be used for BLUETOOTH® wireless audio and voice application requirements.

Features

Complete and fully certified 2.4GHz Bluetooth version 4.1 modules
29mm x 15mm x 2.5mm compact surface module
Onboard embedded BLUETOOTH® stack
BLUETOOTH® Classic (Basic Data Rate (BDR) / Enhanced Data Rate (EDR))
Internal battery regulatory circuit
Audio-In/Out:
- BM23 support digital audio I²S format
- BM20 supports analog audio output
Integrated printed antenna
Worldwide regulatory certifications
RoHS-compliant and environment-friendly
Audio Codec:
- 20-bit DAC and 16-bit ADC codec
- 98dB SNR DAC playback
Peripherals:
- Built-in lithium-ion battery charger
- Built-in ADC for battery monitor and voltage sense
- Line-in port for external audio input
- Two LED drivers

Audio processor
- Supports 64kb/s A-law or μ-law PCM format or CVSD for SCO channel operation
- Noise suppression
- Echo suppression
- SBC and optional AAC decoding
- Packet loss concealment
Compliance
- Bluetooth SIG QDID
- Module certified for
  - United States (FCC)
  - Canada (IC)
  - Korea (LCC)
  - Taiwan (NCC)
  - Japan (MIC)
  - China (SRRC)