Mega parallel DACs ?

[Bernhard]

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.

 

[Rich A.]

Actually paralleling after the da is counter productive. Design the circuit well and the distortion will be quite low.

 

[Bernhard]

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.

 

[ojg]

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!