Ultra Micro DAC - AudioJunkies
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Old 03-04-2008, 02:45 AM   #1
 
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Default Ultra Micro DAC

The folks at Cirrus Logic and Analog Devices would likely flip their wig if they saw their flagship DAC and Asynchronous Sample Rate converter chips shoehorned into the tiny Ultra Micro DAC. The CS4398 is the best performing DAC chip in Cirrus' line-up with numbers like 120dB dynamic range and -107dB THD+Noise, and the Analog Devices AD1896 Asynchronous Sample Rate Converter up-samples all incoming digital data to 24-bit, 196kHz data with an interpolation algorithm using its own ultra-stable clock to insure a jitter-free output data stream. And these uber-screamer chips aren't alone in there: the Micro DAC has five independent power supply regulators for the various analog and digital sections including one solely for the aforementioned sample rate converter clock; a TI PCM2902 chip handles the computer USB to S/PDIF conversion before sending the numbers off to the ASRC and DAC; local decoupling with ultra-low ESR polyphenylene-sulfide film capacitors is provided at each active analog stage; resistors are low-drift, low-noise, 0.1% metal film parts throughout; and a multi-layer circuit board holds it all together while keeping the signals apart... Man, it's still hard to believe we could actually fit all that stuff in there!

Specifications
Dimensions: 4.5"(11.5cm)x 3.5"(9 cm) x 1.5"(3.8cm)
Weight: 8.8oz (250 grams)
Amplifier Group: The Micro Line
Frequency Response: 10-50k, 0.3
THD at 1V output: <.002
Input Impedance at 1kHz (ohms): 70k



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Old 11-18-2011, 12:42 PM   #2
 
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Ultra Micro DAC? DAC chip in Cirrus' line-up with numbers like 120dB dynamic range and -107dB THD+Noise?
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