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Old 7th November 2004, 10:18 AM   #1
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Default Mega parallel DACs ?

Hi,

what about paralleling lots of chips after I/V stage ?

Wouldn`t that reduce distortion of the I/V conversion too ?

PCM56 got small footprint, voltage output, is single channel ( can be selected for minimum distortion ) and has provision for bipolar zero adjustment.

A minimum of 50 pieces would nicely fit on a double size euro pcb.

50 chips per channel, each individually adjusted for minimum distortion, voltage outputs connected together via 1 k resistors.
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Old 19th November 2004, 07:47 AM   #2
Rich A. is offline Rich A.  United States
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Actually paralleling after the da is counter productive. Design the circuit well and the distortion will be quite low.
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Old 19th November 2004, 06:05 PM   #3
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Quote:
Originally posted by Rich A.
Actually paralleling after the da is counter productive.
da = I/V

Why ?

4 options:

Separate DAC chip I-outs with separate I/Vs.

Separate DAC chip I-outs with a common I/V.

Common DAC chip I-outs with paralleled I/Vs.

Common DAC chip I-outs with a common I/V.
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Old 20th November 2004, 04:03 AM   #4
ojg is offline ojg
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Here's an idea:

If I parallell a lot (and I mean A LOT) of current-output dac's, I could drive the speakers directly! This would be a direct digital implementation of a Pass' FirstWatt amp. W00t!
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