Digital Class-D Amplifier SoCs integrate DSP audio processing.
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Press Release Summary:
Model D2-45057 and D2-45157 digital audio amplifiers include 4 configurable power stages which operate as 4 separate half-bridge outputs, as 2 full-bridge outputs, or in combinations of half-bridge plus full-bridge. Output power is 25 W at 8 W and 30 W at 8 W, and units feature up to 5 programmable audio signal path channels and asynchronous sample rate converters with sample rates from 32-192 KHz. They have 9-26 V power stage HV supply range as well as temperature and undervoltage monitoring.
Original Press Release:
D2-45057
Key Features
o All Digital Class-D Amplifier and Controller with Integrated Digital Signal Processing (DSP)
o Four Integrated Power Stages Supporting
- 2 Channels, Bridged
- 4 Channels, Half-Bridge
- 2 Channels, Half-Bridge, plus 1 Channel Bridged
o Output Power (Bridged)
- 25W (8W, <1% THD); 30W (8W, <10% THD)
o Fully Programmable Digital Signal Processing (DSP)
- Up to 5 Programmable Audio Signal Path Channels
- Programmable Equalizers, Filters, Mixers, Limiters
o Includes D2Audio(TM) SoundSuite(TM) and SRS WOW/HD(TM) Audio Enhancement Algorithms
o I2S and S/PDIF(TM) Digital Audio Inputs
o Asynchronous Sample Rate Converters; Sample Rates from 32kHz up to 192kHz
o Wide 9V to 26V Power Stage HV Supply Range, plus Internally-Generated Gate Drive Supply
o Temperature and Undervoltage Monitoring and Individual Channel Protection
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.
This 4th generation Digital Audio Engine (DAE-4P)(TM) 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.
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.
