DAC8565

I had some DAC8565 (quad 16bit DAC) breakout boards made at JLCPCB, and just tested them, they work fine.

The datasheet says that SPI speed for < 3.6V Vdd is limited to 25MHz, above that it's 50MHz. I am able to run the SPI at 45MHz at 3v3 though, and it seems stable. 50MHz does NOT work.

Here are my connections for using the internal 2.5V reference. It is especially important to note that the VrefL must be connected to ground even if using the internal reference:

1: VoutA

2: VoutB

3: VrefOut: 150nF to GND

4: AVdd: 3v3 + 100nF decoupling cap to GND

5: VrefL: GND

6: GND

7: VoutC

8: VoutD

9: !SYNC: SPI CS

10: SCLK: SCLK

11: Din: MOSI

12 IOVdd: 3v3

13: !RST: 3v3

14: RSTSEL: GND (binary input)

15: !ENABLE: GND

16: LDAC: GND or pin on MCU if doing hardware LDAC, this can also be done using a command.