Name		Name	Last commit message	Last commit date
parent directory ..
icecube		icecube
images		images
README.md		README.md
dac.pcf		dac.pcf
dac.scf.xcf		dac.scf.xcf
dac.v		dac.v
dac_top.v		dac_top.v
dac_top_pll.v		dac_top_pll.v
f.R		f.R
ice40hx8k.pcf		ice40hx8k.pcf

README.md

DAC

SB012: Common Analog Functions Using an iCE40 FPGA pdf, page, archived pdf

Xilinx Application Note XAPP154 September 23, 1999 (Version 1.1) pdf, archived pdf

Experiments

Fig 1. - DAC output (dac=128, f_PLL=102MHz, C=4.7nF, R=3.3kΩ) .

f=102MHz, C=4.7nF, R=3.3kΩ, L=100nH
RC = 0.15µs,
1/(2 pi sqrt(LC)) = 7.3MHz

<iframe width="560" height="315" src="https://www.youtube.com/embed/0zA43rOaXOI" frameborder="0" allowfullscreen style="align-content: center"></iframe> Vid 1. - DAC output (dac=128, f_PLL=102MHz, C=4.7nF, R=3.3kΩ) .