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CSR 417 Class 2 Bluetooth Module 30M
27.5mm x 14.5mm


The BC04 Class1 Bluetooth Module is a Class 1 Bluetooth module using BlueCore4-External chipset from leading Bluetooth chipset supplier, Cambridge Silicon Radio. It can be applied to a fully compliant Bluetooth system for data and audio communications. It interfaces with a host via USB or UART and supports full data rate up to 3Mbps modulation modes. Audio interface supports PCM protocol. The module and device firmware is fully compliant with the Bluetooth specification V2.0. Because of its sufficient pin definitions, high receiving sensitivity, low power consumption, and low cost, BC04 Class1 Bluetooth Module is suitable for long distance transmission devices.

BTM4805C2X module provides a high quality but low cost Bluetooth voice communication solution, and it is a best choice for the high quality single-track and stereo headphones design. The built-in DSP empowers hands-free echo elimination;the way of high integrated design reduces the number of components and BOM cost, improving the cost performance. It can also applied to car hands-free devices, VoIP handheld devices, music player devices, Bluetooth adapter, USB multimedia adapter decoding(MP3/AAC/AAC+), echo cancellation, noise reduction, etc.

For universal high-end stereo Bluetooth headphones and Bluetooth car hands-free devices can be developed, users do not need to think about programming and consider the complex RF circuit.

  • Bluetooth Specification: Classical V3.0
  • Operating Frequency Band 2.40 GHz~2.48GHz unlicensed ISM Band
  • Completely compliant with Bluetooth Spec. 3.0
  • Support Enhanced Data Rate (EDR) for both 2Mbps and 3Mbps modulation modes
  • 1 Level Output Power
  • Support Piconet, simultaneously connect with up to 7 Slaves
  • Support Scatternet
  • Support video and audio transmit
  • USB 2.0 and UART Host Interface
  • PCM Audio Interface
  • Voltage range 2.7V to 3.6V
  • Normal Supply Voltage at 3.3±0.1V
  • Built-in 8Mbit Flash Memory
  • Support modes: Park, Sniff, Hold and Deep Sleep mode
  • Surface-mount, Size: 27.5 x 14.5 x 2 mm

Block Diagram:

The transmitter design consists of a Bluetooth Chip device connected to an Atmel power amplifier via a matching network and balun. Harmonic filtering, a transmit/receive switch, a ceramic bandpass filter and a SMA connector are also included. 

The receiver uses the same antenna, bandpass filter and transmit/receive switch as the transmitter. To improve the sensitivity, the LNA within the Atmel device and the single-ended receiver port of Bluetooth Chip are used. 


Industrial automation instrument

Medical monitoring equipment

Power acquisition equipment

Smart home

Bluetooth electronic balance

Bluetooth printer device

Bluetooth mouse, keyboard, joystick and other consumer electronic devices

Mapping equipment