I'm trying to configure the AD9106 to generate a sawtooth wave for driving the galvometer
I use an Xillinx FPGA to generate the corresponding SPI signals to communicate with the AD9106
However, whatever I changes the settings, the output of the AD9106 remains a 0.01V DC constant.
I tried to change the BGDR code of the 0x03 register, the IOREF voltage is changing correspondingly as I expected, which implies that the SPI communication is working,
I powered the AD9106 with 2.5V, the LDO pads is 1.8V, which is as I expected, indicating that the chip is not broken( I guess).
I suspect that I've done somthing wrong in the output stage circuit
The image below is our output stage circuit and AD9106 circuit schematic.
The clocking is clocked by a on board LVDS oscillator, directly fed in the CLK_P CLK_N port (which I couldn't measure it on the oscilloscope)
I need assistance
I appreciate your help very much.