CSR8640
Not for new design
CSR8640
Contact Sales
CSR8640

Bluetooth® audio ROM platform with Qualcomm® cVc™ noise cancellation technology for entry level to mid-range audio devices.

The CSR8640 dual-mode ROM audio SoC offers various capabilities found in the CSR8670 SoC, including cVc noise cancellation technology in a ROM-based package, ideal for entry-level to mid-range wireless audio products with support for voice and music. The CSR8640 is part of the CSR86xx portfolio, a range of silicon platforms for wireless audio applications which integrate a dual-mode Bluetooth radio, a low power DSP, an application processor, a battery charger, memory and various audio and hardware interfaces into a single-chip solutio...

CSR8640, Qualcomm cVc and Qualcomm Kalimba are products of Qualcomm Technologies, Inc., and/or its subsidiaries.

Product license agreement
Benefits
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Ideal for entry-level to mid-range wireless audio products

The CSR8640 SoC has a reduced feature set supporting the essential features expected from Bluetooth audio products while providing cost efficiency for entry-level products.

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Integrated single-chip solution for smaller designs

Application processor, Bluetooth and Bluetooth low energy radios, DSP and memory integrated into a single SoC helps reduce system complexity and eBOM while supporting small form factor designs.

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No software development required

Pre-loaded Bluetooth and audio applications allow manufacturers to develop end-products without writing code, while customization tools support quick modification of device behaviour and user interface.

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cVc 6th generation 2-mic audio technology

cVc technology is a suite of algorithms designed to work on the transmit and receive path of voice calls to deliver optimum voice quality on Bluetooth headsets, handsets, hands-free devices, and automotive.

CSR8640 Block Diagram

Features

  • Bluetooth 4.0 specification compliant
  • Flexible ROM-based platform with fully configurable MMI and tool chain
  • Support for various profiles including: HFP 1.6, A2DP 1.2 AVRCP 1.4
  • 80MHz Qualcomm® Kalimba™ DSP with integrated multipoint A2DP and HFP audio applications
  • 2-mic cVc 6th Generation voice processing technology with wideband speech
  • Audio tuning suite with audio enhancements and 5-band EQs
  • Internal ROM, serial flash memory and EEPOM interfaces
  • MP3, AAC and SBC audio codecs
  • GAIA V1 and associated Android and iOS apps for connectivity with mobile devices
  • Reference speaker and headset applications pre-loaded on the ROM
  • Fast charging support up to 200mA with no external components
  • Pin compatible with CSR8645
Specifications
CPU
Clock Speed
Up to 80 MHz
DSP
Name
Qualcomm® Kalimba™
Bluetooth
Specification Version
Bluetooth® 4.1
Links
Dual eSCO, Dual A2DP
Classic Profiles
Bluetooth® Advanced Audio Distribution Profile (A2DP) 1.2, Bluetooth® Hands-Free Profile (HFP) 1.6, Bluetooth® Audio/Video Remote Control Profile (AVRCP) 1.4, Bluetooth® Headset Profile (HSP) 1.2, Bluetooth® Device ID Profile (DIP) 1.3
Maximum Output Power (typical)
Up to 9 dBm
Receiver Sensitivity (Basic Rate, typical)
Down to -92 dBm
Audio
Qualcomm® cVc™ Echo Cancelling and Noise Suppression (ECNS) technology support
Qualcomm® cVc™ Echo Cancelling and Noise Suppression
Other Audio Capturing Technologies
HD Voice, Talk-Time Extension
Other Audio Processing Technologies
5-band EQ
Charging
Maximum Current
200 mA1, 500 mA2
  1. On chip
  2. With external transistor

Compare related products.

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7 of 7 total products

Product

CPU

Clock Speed

Bluetooth

Receiver Sensitivity (Basic Rate, typical)

Audio

Other Audio Capturing Technologies

Digital Microphones

Number of Interfaces

Package

Type

Size

Other

CSR8635
Not for new design

Up to 80 MHz

Down to -91 dBm

Talk-Time Extension

—

QFN

8 × 8 × 0.9 mm

CSR8645
Not for new design

Up to 80 MHz

Down to -92 dBm

HD Voice
Talk-Time Extension

2

VFBGA

5.5 × 5.5 × 1 mm

CSR8615
Not for new design

Up to 80 MHz

Down to -91 dBm

Talk-Time Extension

1

QFN

8 × 8 × 0.9 mm

CSR8630
Not for new design

Up to 80 MHz

Down to -91 dBm

Talk-Time Extension

—

QFN

8 × 8 × 0.9 mm

CSR8640
Not for new design

Up to 80 MHz

Down to -92 dBm

HD Voice
Talk-Time Extension

2

VFBGA

5.5 × 5.5 × 1 mm

CSR8620
End of life

Up to 80 MHz

Down to -92 dBm

HD Voice
Talk-Time Extension

2

VFBGA

5.5 × 5.5 × 1 mm

CSR8605
End of life

Up to 80 MHz

Down to -91 dBm

Talk-Time Extension

—

—

8 × 8 × 0.9 mm

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