Hi Ray,
You can take a look at this figure from TIPD137 :
With a positive reference in the four quadrant figure (the blue regions), codes 0x0000 to 0x7FFF represent the negative output voltage, and codes 0x8000 to 0xFFFF represent positive voltage…
Alpha,
I would suggest you refer your customer to TIPD137 , a design document we created to help guide people on the selection criteria of the amplifier used in the transimpedance stage of a multiplying DAC design.
A specific recommendation depends…
Hi Mikael,
You are correct, when looking in from the OUT-pin, the impedance changes by code.
There is no easy way to determine the impedance at each code. If you want some more detailed information to calculate it take a look at TIPD137. The document…
Hi Paul,
1. Current tCSS timing is setting 0ns base on Figure 1. I will change tCSS timing from 0ns to 5ns, ok?
2. Regarding the schematic, we are based on DAC8811 as attached file. I cannot found any mistake...
Do you mean that VREFA and VREFB…
Hello Iven,
The Engineer who primarily supports these products is located in India and will be observing the local Independence Day holiday tomorrow. I will temporarily help out here until his return.
Is it possible for us to look at schematic details…
Hi Didier,
Layout considerations may vary depending on your specific application. Can you give us more details about the application or a schematic?
General layout best practices should be sufficient to create a successful layout, including; the use…
Hello Cedric,
The DAC8812 is a multiplying DAC, or MDAC. Conventionally MDACs are designed in a two-quadrant or four-quadrant configuration. What you're describing would most specifically be a two-quadrant MDAC circuit where the MDAC is simply followed…
