I have an application where i need to generate upto 24 analog voltage outputs, with around 12-bits of resolution. Single-channel DACs are out of question as it will increase the cost and PCB space by too much.

I have seen a few Multi-channel DACs (2x or 3x or even 8x channels) from maxim, Analog Devices, etc., but somehow these parts are not available in my place. The next best option seems to be to place an order online on maybe Digikey or some other re-seller to get them.

However, i was wondering if there is another way to achieve a multi-channel analog output module. Precision and speed are not very critical, as the outputs are supposed to send a speed and/or position signal to a Servo drive to control dampers for Air flow.

This might sound stupid, but i was wondering what if multiple Sample-and-hold amplifiers are used in front of a DAC and the DAC is run at a high speed to output a voltage that is "latched" in a Sample and Hold amp ? Lets say we talk about 8x SnH amps at front of a DA ?

Is this even possible / practical ?

Regards,
Zee