I tried to use LTC2636, so far no luck
First I output 0x7000 via SSI, to set it up to use external reference (I can confirm 0x7000 on CS, SCK and SDI with logic analyzer)
Then I output 0x0080 via SSI, to write 0x80 to register 0
finally I output 0x0100, to update the dac, but i got nothing on VoutA
Did I miss something? Thanks for your time
Below the schematic
Here is the first command, 0x70000000, 32 bit, I think I need to change it back to 24 bit
Hi,
32bits should be fine, but you need to follow Figure 3b on the datasheet.
"To use the 32-bit width, 8 don’t-care bits must be transferred to the device first, followed by the 24-bit sequence described. Figure 3b shows the 32-bit sequence."
