The ES9082 SMART DAC and ES9081 DAC are ESS' next generation devices that deliver a True DNR of +120dB and -108dB THD+N with 2VRMS line driver for each of the 8 channels allowing for an amazing audio experience while reducing the Bill-Of-Material (BOM). Channels can be summed to improve performance in an application requiring fewer channels. A 2-channel differential configuration can achieve up to +127dB DNR with a 4VRMS output. ESS’ True DNR performance does not rely on Dynamic Range Enhancement (DRE) technology that shows higher DNR but is known to cause pop noise in some applications.
The ES9082 SMART DAC incorporates a 2nd generation of ESS Audio Signal Processor (ASP2) that allows developers to integrate their preferred audio algorithms by using ESS’ proprietary SABRE Intelligence Studio graphical software tool. Manufacturers can integrate multi-band PEQs, DRC, AGL, MIXERs, Audio Expansion and Compression, stereo widening, and specialty filters such as RIAA de-emphasis and cross-over filters.
Incorporating these algorithms in the SMART DAC improves the audio performance and simplifies the audio system. In addition, a 2-channel input is available to mix a secondary stereo source such as a microphone monitor into ASP2. The ASP2 can be programmed using the slave I2C, slave SPI interfaces or the SPI master interface with an optional external SPI Flash memory for very fast program loading and for storing multiple configuration programs.
The serial data interface supports TDM, TDM Daisy Chain, I2S, LJ, DoP and DSD input formats with sample rates of up to 768kHz (using 64FS mode) and DSD1024. The integrated TDM and S/PDIF output encoders allow for a variety of systems design considerations.
Other features in the new ESS devices, include SPI and hardware (HW) modes for more versatility in configurations, integrated proprietary Analog PLL, eliminating the need for an external oscillator with no effect on performance, 8 internal digital filters and support for 8 PDM input channels. Developers will benefit from the digital volume ranging from +1dB to -126dB in 0.5dB steps with 0 to +42dB pre-gain in +6dB Steps, and from the very low noise DAC reference regulators.
Also launched with the ES9082, is the ES9081 device, without ASP2 capability but drop-in compatible with the previous generation of ES9080 and allowing developers to upgrade seamlessly and achieve higher performance with their current systems.
The ES9081 is available in a 40 pin 5mm x 5mm QFN package, while the ES9082 is available in a 48 pin 7mm x 7mm QFN package. Reference boards and designs, SABRE Intelligence Studio (SIS) software, and samples are available.
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