We have the chip connected as follows:
Pin 1 (LDAC) -> GND
Pin 2 (ADDR1) -> GND
Pin 3 (VCC) -> 5v
Pin 4 (VoutA) -> setup to read voltage
Pin 5 (VoutC) -> No connect
Pin 6 (POR) -> GND
Pin 7 (VrefIn/VrefOut) -> GND through a cap
Pin 8 (ADDR2) -> GND
Pin 9 (CLR) -> 5v
Pin 10 (VoutD) -> No connect
Pin 11 (VoutB) -> No connect
Pin 12 (GND) -> GND
Pin 13 (SDA) -> I2C Bus
Pin 14 (SCL) -> I2C Bus
First I'd like verification that based on ADDR1 and ADDR2 grounded and we're sending WRITE commands the correct address is: 0x3E
Then during our initialization we are sending 0x28, 0x00, 0x01 for a power on reset. Next we send 0x20, 0x00, 0x01 for Power-up. Then we send 0x38, 0x00, 0x01 to turn on the internal reference.
To set the DAC A output we are sending 0x58, (MSB), (LSB).
Can you please confirm that we have the proper hook-up and the proper messages? My EE claims he's set the chip up for external and verified that worked then set it back. He belive's this verifies the chip is functioning.
Thanks,
Brent
