DAC7552: No output from the DAC7552 channels.

Supun Amarasinghe

Part Number: DAC7552

Hi,

I'm doing a PCB design using DAC7552 and I've designed the PCB according to the following schematic design. Is this correct?

I'm not getting any output from the DAC channels, I didn't use any power down command and directly used the following command in a 16bit data frame through SPI communication.

Power down commands in the datasheet are really confusing, as there are multiple occurrences for the same scenario.

Am I missing something here?

over 1 year ago

0 Katlynne Jones over 1 year ago

TI__Mastermind 30938 points

Hi Supun,

Sanjay is reviewing this and will provide a response.

Best,

Katlynne Jones

0 Sanjay over 1 year ago in reply to Katlynne Jones

TI__Intellectual 2840 points

Hi Supun,

Please try these things :-

1. Connect the CLR (pin # 14) similar to PD (pin # 7).

2. Can you send the actual pcb schematic?

3. Probe the digital line (SDIN,SCLK, SYNC) and send the the snap of the waveform.

Thanks,

Sanjay

0 Supun Amarasinghe over 1 year ago in reply to Sanjay

Prodigy 45 points

Hi Sanjay,

This is my actual PCB schematics, And here is a snap of the data packet. I'm sending the analog value 500 right now.

0 Sanjay over 1 year ago in reply to Supun Amarasinghe

TI__Intellectual 2840 points

Hi Supun,

1. Connect the CLR (pin # 14) similar to PD (pin # 7) >> is this done??

2. Can probe the digital line (SDIN,SCLK, SYNC) on the PCB (near the device pins) with oscilloscope and send the the snap of the waveform?

Thanks,

Sanjay

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DAC7552: No output from the DAC7552 channels.