Intelligent Digital Amplifier PWM Controller and
Audio Processor
D2-45057, D2-45157
Features
• All Digital Class-D Amplifier and Controller with
Integrated Digital Signal Processing (DSP)
The D2-45057 and D2-45157 devices are complete
System-on-Chip (SoC) Class-D digital audio amplifiers.
Combining high performance integrated Power Stages
along with an optimized Audio Processor feature set and
PWM Controller, these devices offer a complete,
powerful, and very cost effective audio solution for high
volume and cost-critical products.
• Four Integrated Power Stages Supporting
- 2 Channels, Bridged
- 4 Channels, Half-Bridge
- 2 Channels, Half-Bridge, plus 1 Channel Bridged
• Output Power (Bridged)
- 25W (8Ω, <1% THD); 30W (8Ω, <10% THD)
This 4th generation Digital Audio Engine (DAE-4P)™
device combines extensive integrated Digital Signal
Processor (DSP) audio processing with amplifier control,
for a complete audio solution. Its ease of integration into
the existing system processor provides complete support
for all system product and amplifier functions.
• Fully Programmable Digital Signal Processing (DSP)
- Up to 5 Programmable Audio Signal Path Channels
- Programmable Equalizers, Filters, Mixers, Limiters
• Includes D2Audio™ SoundSuite™ and
The four configurable Power Stages operate as four
separate Half-Bridge outputs, as two Full-Bridge outputs,
or in combinations of Half-Bridge plus Full-Bridge,
providing flexible loudspeaker drive solutions. Separate
PWM outputs provide additional combinations to drive
headphone, or line level stereo and subwoofer outputs.
SRS WOW/HD™ Audio Enhancement Algorithms
2
• I S and S/PDIF™ Digital Audio Inputs
• Asynchronous Sample Rate Converters;
Sample Rates from 32kHz up to 192kHz
• Wide 9V to 26V Power Stage HV Supply Range, plus
Internally-Generated Gate Drive Supply
• Temperature and Undervoltage Monitoring
and Individual Channel Protection
Related Literature
• DAE-4/DAE-4P Register API Specification
• DAE-4P Evaluation Kit Guides
Applications
• PC/Multimedia Speakers
• Digital TV Audio Systems
• Portable Device Docking Stations
• Powered Speaker Systems
Typical System Implementation
Amplifier Output 1
Output
Digital
I2S
Audio
Amplifier Output 2
SoC
System
Controller(s)
Filter
24 Bit
Digital
Signal
2 Channel
Sample
Rate
Amplifier
Output
MOSFETS
Interface
5 Channel
PWM
Engine
Amplifier Output 3
Amplifier Output 4
Output
Filter
I2C
I2C
Processor
Converter
Control
PWM
Output
Drive
PWM
Output
Subwoofer
Optical/
Coax IN
S/PDIF
Buffer
Filter
Line Out
D2Audio®
Audio Canvas™
Processing
3rd Party
S/PDIF
Digital I/O
Interface
D2Audio®
SoundSuite™
ENHANCEMENTS
(SRS WOW/HD®)
PWM
PWM
Output
Filter
Stereo
Line Out
OR
Optical/
Coax OUT
S/PDIF
Buffer
Output
Filter
(Optional)
Headphone
Out
D2-45x57-QR
DAE-4P™ Intelligent Digital Power Amplifier and Audio Processor
(Optional)
SYSTEM APPLICATION IMPLEMENTING 2X FULL-BRIDGE LOUDSPEAKER OUTPUTS PLUS 3 LINE-LEVEL OUTPUTS
July 29, 2010
FN6785.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
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