Bluetooth Smart Ready Module

Case Studies

Lead Times Update 31 Jan 2024

LM Technologies is continuously liaising with suppliers to reduce any lead times where possible. We have updated lead times for new orders for the following products: LM811 – 8-10 Weeks…

Bluetooth® 5 Dual Mode Audio Module – LM746

£100.00

The LM746 is an extremely versatile and cost effective Bluetooth® 5 compliant solution, enabling audio data to be wirelessly communicated between audio devices, using a Bluetooth® and Bluetooth low energy connection. It’s sound enhancement features make it a perfect fit within your premium audio device.

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Available: Out of stock

  • Tech Spec

    Additional Information

    Wireless Standard
    • BT 5
    Backward Compatibility
    • Bluetooth 4.1
    • Bluetooth 4.0
    • Bluetooth 3.0
    • Bluetooth 2.1
    • Bluetooth 2.0
    Module Type
    • Programmable (Configurable with AT Commands)
    Frequency

    2.4 GHz

    Profiles

    A2DP, AVRCP, GATT-Based, HFP, HSP, Partially Supported SPP

    Programming Interface

    SPI

    Interfaces
    • UART
    • USB
    Audio Interfaces

    I2S, PCM, SPDIF

    Antenna

    IC Antenna

    Dimensions
    • 23.9mm x 16mm x 2.3mm
    Weight
    • 1.38g +/- 0.25g tolerance
    Operating Temperature
    • -20°C to +75°C
    Tx Output Power
    • 2dBm (Bluetooth® v2.0, v.2.1)
    Rx Sensitivity
    • -90dBm (Bluetooth® v2.0, v.2.1)
    Development Kit

    LM558

    Compliance
    • Reach
    • RoHS
    • WEEE
    Certifications
    • Bluetooth SIG - UK
    • CE-Europe-RED
    • FCC - United States
  • Description

    The LM746 Bluetooth® Dual Mode audio module is an extremely versatile and cost effective solution. Enabling audio data to be wirelessly communicated between audio devices using a Bluetooth® v2.0, v2.1 and Bluetooth® v4.0, v4.1, (or 5 compliant) connection. It’s sound enhancement features, makes it a perfect fit within your premium audio device. The sound enhancement features includes CSR’s aptX® audio technology. Providing CD-like quality over a Bluetooth® connection. And CSR’s cVc audio technology for noise cancellation. Perfectly suited to wireless headphones, speakers and hand-free headsets. This standalone module allows the developer to connect a microphone, speakers, capacitive touch sensors and other I/O devices. Running the user application without using an external MCU. LM offer application support to the developer and can create new user applications for the module. Your developed user application and settings can be preloaded to the LM746, simplifying the manufacturing and testing process. It’s SMT side and bottom pads allows for easy integrations into your embedded system.

    Typical Applications

    • Wireless headphones and speakers
    • Hand-free headsets
    • Automotive infotainment systems
    • Home entertainment devices
    • Audio adapters
  • Features

    • Application Firmware Support
    • aptX® codec (including support for SCMS-T) and Faststream codec
    • CSR’s cVc noise-cancellation technology
    • Integrated 16-bit Stereo Audio CODEC
    • SBC, MP3 and AAC decoder
    • 6 Capacitive touch sensor input interfaces
    • Microphone input and Speaker output interfaces

Case Studies

Lead Times Update 31 Jan 2024

LM Technologies is continuously liaising with suppliers to reduce any lead times where possible. We have updated lead times for new orders for the following products: LM811 – 8-10 Weeks…

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Certifications

Bluetooth SIG Certified [ Verify our SIG certification of LM746 ]

OTHER DECLARATIONS

ECCN / CCATS

The LM746 Bluetooth® Dual Mode audio module is an extremely versatile and cost effective solution.

Enabling audio data to be wirelessly communicated between audio devices using a Bluetooth® v2.0, v2.1 and Bluetooth® v4.0, v4.1, (or 5 compliant) connection. It’s sound enhancement features, makes it a perfect fit within your premium audio device.

The sound enhancement features includes CSR’s aptX® audio technology. Providing CD-like quality over a Bluetooth® connection. And CSR’s cVc audio technology for noise cancellation.

Perfectly suited to wireless headphones, speakers and hand-free headsets. This standalone module allows the developer to connect a microphone, speakers, capacitive touch sensors and other I/O devices.

Running the user application without using an external MCU. LM offer application support to the developer and can create new user applications for the module.

Your developed user application and settings can be preloaded to the LM746, simplifying the manufacturing and testing process. It’s SMT side and bottom pads allows for easy integrations into your embedded system.

Typical Applications

  • Wireless headphones and speakers
  • Hand-free headsets
  • Automotive infotainment systems
  • Home entertainment devices
  • Audio adapters

Additional information

Wireless Standard
  • BT 5
Backward Compatibility
  • Bluetooth 4.1
  • Bluetooth 4.0
  • Bluetooth 3.0
  • Bluetooth 2.1
  • Bluetooth 2.0
Module Type
  • Programmable (Configurable with AT Commands)
Frequency

2.4 GHz

Profiles

A2DP, AVRCP, GATT-Based, HFP, HSP, Partially Supported SPP

Programming Interface

SPI

Interfaces
  • UART
  • USB
Audio Interfaces

I2S, PCM, SPDIF

Antenna

IC Antenna

Dimensions
  • 23.9mm x 16mm x 2.3mm
Weight
  • 1.38g +/- 0.25g tolerance
Operating Temperature
  • -20°C to +75°C
Tx Output Power
  • 2dBm (Bluetooth® v2.0, v.2.1)
Rx Sensitivity
  • -90dBm (Bluetooth® v2.0, v.2.1)
Development Kit

LM558

Compliance
  • Reach
  • RoHS
  • WEEE
Certifications
  • Bluetooth SIG - UK
  • CE-Europe-RED
  • FCC - United States

USER MANUALS


LEGACY MANUALS


* For any other product documentation please Contact Us

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