TLV320AIC3104: question about analog mono iuput & ADC

TS,

1: The AIC3104 has very flexible input routing. There are 2 ADCs, each input can be routed to each or both of the ADCs.
2: are you asking if the ADC bit rate can be selected separately from the DAC?

best regards,
-Steve Wilson

TS,

I am checking in with the design team for a specific answer, but in the meantime It probably makes more sense to look at this from the perspective of ENOB and Dynamic range. The CS4299 lists its ADC as 18bit. but with a dynamic range of 90dB (typical for CS4299-KQ , the CS4299-JQ is 85) you're looking at an Enob of roughly 14.7. the AIC3104 has a dynamic range of 92dB which would give you just slightly more at 15. I would say that the ADCs are similar, with the ADCs in the AIC3104 giving you a little better performance.

best regards,
-Steve

Hello TS,

first, I want to let you know that I did hear back from the design team regarding the Bit specification:

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"Internally we have accumulator with more than 32-bits precision therefore we are able to generate data LSB bits toggling even in 32-bits output configuration setting.

Having said that the Audio Converters device real performance depends upon Converter SNR and Dynamic Range spec rather than interface resolution or internal accumulator precision which can be as high as 32-bits.
For Audio Converter due to real-time audio signal conversion it doesn’t make sense to define device performance as ENOB or bit resolution like SAR or other converters does which are mostly used for DC measurement applications. There is an AES (audio engineering society) standard which defines various audio performance parameters etc and that is followed by TI and our audio competitors products as well. Normally for 18-bit resolution device the SNR spec required is as high as ~110dB or so."

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now regarding your question, The TLV320AIC3104 or TLV320AIC3106 could replace the CS4299 depending on the application. The AIC310x devices do not have a built in S/PDIF output, so if that is a necessity it would require another IC. none of our Codecs have a S/PDIF out. additionally the AC LINK communications would be scrapped for I2S and I2C. but I would think that would probably be a relief to most Customers.

otherwise, our devices seem to match the inputs requirements and, and they have more output capabilities, including built in headphone amplifiers.


best regards,
-STeve Wilson