Hi
You seem to have locked on a bit of information presented for those digital engineers that have a problem in the analogue realm. Looking at the full spec sheet for the 797 you will find Slew Rate and two listings. 1 for "12.5 volts per microsecond" and one for "Settling Time to 0.0015%--10 volt step --800 nanoseconds" The 0.0015% is the precent value of the LSB for a 16 bit DAC, hence the 16 bit settling time. Analogue folks would have simply divided 1 microsecond by 12.5 volts and multiplied that by 10 and found that 800 nanoseconds was the time that the 797 required to respond to a 10 volt step. Now the difference between a 16 bit audio system and a 24 bit system is dynamic range NOT frequency responce, that depends upon the sampling rate. The full power bandwidth of the 797 at a gain of 10 is 8 MHz, much more than sufficient for any audio system. Back to dynamic range. A standard CD as a maximium dynamic range of 96 db, 6 db per bit, a 24 bit system then should have a dynamic range of 144 db but due to noise limites of the recording and playback loops you will find that the best units specify a range of 110 to 115 db. The 120db noise limit of the 797 exceeds those values by a fair margine and will add no audible noise to any system on the market.
Thanks.......Con
You seem to have locked on a bit of information presented for those digital engineers that have a problem in the analogue realm. Looking at the full spec sheet for the 797 you will find Slew Rate and two listings. 1 for "12.5 volts per microsecond" and one for "Settling Time to 0.0015%--10 volt step --800 nanoseconds" The 0.0015% is the precent value of the LSB for a 16 bit DAC, hence the 16 bit settling time. Analogue folks would have simply divided 1 microsecond by 12.5 volts and multiplied that by 10 and found that 800 nanoseconds was the time that the 797 required to respond to a 10 volt step. Now the difference between a 16 bit audio system and a 24 bit system is dynamic range NOT frequency responce, that depends upon the sampling rate. The full power bandwidth of the 797 at a gain of 10 is 8 MHz, much more than sufficient for any audio system. Back to dynamic range. A standard CD as a maximium dynamic range of 96 db, 6 db per bit, a 24 bit system then should have a dynamic range of 144 db but due to noise limites of the recording and playback loops you will find that the best units specify a range of 110 to 115 db. The 120db noise limit of the 797 exceeds those values by a fair margine and will add no audible noise to any system on the market.
Thanks.......Con