What's up Analog Devices,
The AD5412 data sheet claims the SPI input shift register requires exactly 24 bits before the LATCH strobe to get a current output to appear. The data sheet also claims if 25 bits are written (one bit extra) the data written will be "invalid". Did they perhaps mean the input shift register would take the most recent 24 of the 25 bits before the LATCH and then output a current based on those most recent 24 bits? This assumes the most recent 24 bits themselves conform to the correct format required by the AD5412.