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Qualcomm® CSRA6640 Next-Gen Qualcomm® DDFA™
Amplifier TechnologyAndrea Cantone
Senior Manager, Product Marketing
Qualcomm Technologies International, Ltd.
@qualcommMarch 19th 2019 San Diego, United States
Qualcomm CSRA6640 and Qualcomm DDFA are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
2Qualcomm DDFA is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
Qualcomm® DDFA™ Amplifier Technology
Smallspeakers,
bigsound
2
33
Qualcomm® DDFA™
Our high-performance digital amplifier technology
Qualcomm DDFA is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
Direct Digital Feedback Amplifier
Result of more than
10 yearsof development
True digitalarchitecture with dual
feedback loop and configurable DSP
Premium soundwith the performance
of linear amplifiers
4
Chosen for premium sound quality
NAD M2 amplifier BlueSound PowerNode 1 speaker Denon PMA-60
NAD C 390DD amplifier Denon PMA-50 amplifier Yamaha MusicCast BAR 400
NAD D 7050 amplifier Denon DRA-100 amplifier Sonos Amp
NAD Viso 1 Speaker Denon DNP-2500NE amplifier
NAD M51 DAC Denon DA-310USB
55
I usually wouldn’t judge
a $6000 product against
one costing more than
$50k, but the M2’s
outstanding performance
in many areas invited
the comparison.
— The Absolute Sound,
NAD M2
What reviewers sayProducts supported by Qualcomm® DDFA™ Amplifier Technology
Qualcomm DDFA is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
I admit to having been a little suspicious
at first of the PCM-to-PWM approach
that NAD has taken in the M51. That
was before I'd had a chance to live
with it for a couple months. …the
NAD M51 succeeds with a wonderfully
detailed and revealing sound best
described as honest, with a friendly
smile. And it was a pleasure to listen to.
— Stereophile.com,
NAD M51
Every album (…) sounded like
real flesh and blood musicians,
and the amazingly low noise
floor was certainly a factor.
I listened to a lot of the
Blue Note 192 Khz remasters
and the tonality of these
vintage recordings was
simply breath-taking.
— AVREV.com.
Denon PMA-60
66
As speakers get smaller, amplification matters more*above statistics based on findings from Qualcomm State of Play report 2018
Demand for portable
and smaller form factors
Demand for premium
audio across all tiers
Almost half of participants in our 2018 surveywould like to use their smart speaker “on-the-go”
Sound quality ranked highest priorityamong audio consumers
48%78%2017
76%2018
#1
7Qualcomm CSRA6640 and Qualcomm DDFA are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
Qualcomm® DDFA™ Amplifier Technologyand Qualcomm® CSRA6640
Previous generation
Digital modulator and DSP(Qualcomm CSRA6601)
Analogue feedback processor(Qualcomm CSRA6600)
External output stage
External power management
Qualcomm CSRA6640 —DDFA Amplifier
Same feature set asQualcomm CSRA6620
Same sound quality
Integrated output stage
2 x 20W RMS at 4/8Ω or 1x 40W RMS at 2/4 Ω
Qualcomm CSRA6620 —DDFA Controller
Digital modulator, DSP and feedbackprocessor integrated on a single chip
Smaller footprint (9 x 9mm QFN)
384KHz PCM, TDM and DSD64/128 support
Discrete and monolithic power stages support
Added power management features
Suitable for applications > 20 Watts
2013 20192017
Integrated ordiscrete power
stages
CSRA6620
Discrete powerstages
Powermanagement
CSRA6601QualcommCSRA6600
*Future dates are subject to change
QualcommCSRA6640
8
Uniquely designed to balance superior sound quality with low power
Linear Class AB DDFA
Open-loopdigital Class D
Closed-loop digital Class D
Analogue Class D
Performance
Efficiency
Digital connectivity
High Resolution support
Configurable DSP
Superior/ premium
Strong
Partial (no DSD)
Limited
Some
X
9
Evolved audio experiences
Qualcomm DDFA is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
What Qualcomm® DDFA™
Amplifier Technologyis designed to do for the listener?
Lower THD
THD maintainedat max power
Lower noise
Pleasant, immersive sound
Great sound qualityat high volume
No buzzing/hissing soundsduring silence/standby
10
Qualcomm® CSRA6640
Designed to make
high-performance
amplification possible
in smaller form factor
and portable speakers
Qualcomm CSRA6640 is a product of Qualcomm Technologies, Inc. and/or its subsidiaries.
Nothing in these materials is an offer to sell any of the
components or devices referenced herein.
©2018 – 2019 Qualcomm Technologies, Inc. and/or its
subsidiaries. All Rights Reserved.
Qualcomm is a trademark of Qualcomm Incorporated,
registered in the United States and other countries.
DDFA is a trademark of Qualcomm Technologies
International, Ltd., registered in the United States
and other countries. Other products and brand names
may be trademarks or registered trademarks of their
respective owners.
References in this presentation to “Qualcomm” may mean Qualcomm
Incorporated, Qualcomm Technologies, Inc., and/or other subsidiaries
or business units within the Qualcomm corporate structure, as
applicable. Qualcomm Incorporated includes Qualcomm’s licensing
business, QTL, and the vast majority of its patent portfolio. Qualcomm
Technologies, Inc., a wholly-owned subsidiary of Qualcomm
Incorporated, operates, along with its affiliated companies,
substantially all of Qualcomm’s engineering, research and
development functions, and substantially all of its product and services
businesses, including its semiconductor business, QCT.
Follow us on:
For more information, visit us at:
www.qualcomm.com & www.qualcomm.com/blog
Thank you