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  • DAC8775: Recommended layer stack-up for daisy-chained DAC8775

    Resolved
    Part Number: DAC8775 Other Parts Discussed in Thread: ADS8688 , TIPD215 Hello. We need to design a PCB with 2 DAC8775 in a daisy-chain configuration for a total of 8 channel 4-20 mA outputs. The PCB will also contain 2 daisy-chained ADS8688. The DAC8775…
    • Resolved
    • Answered

  • DAC8775: clock idle

    Resolved
    Part Number: DAC8775 Other Parts Discussed in Thread: ADS8688 Hi! I have designed a PCB (which is now being manufactured) that includes a couple of DAC8775 and also two ADS8688. These devices should share the SPI bus (SDO, SDI, SCLK). However, I'm not…
    • Resolved

  • DAC8775: Channel 4-20mA output suddenly inoperable

    Part Number: DAC8775 Hello, we have a DAC8775 in a design that uses the buck-boost configuration for full adaptive power management for current output (4-20mA) on all four channels. One of our units suddenly presented a failure on one of the channels…

  • DAC8775: Overshoot, Undershoot and ringing were observed from 0V to 5V Output

    Part Number: DAC8775 Dear Specialists, My customer is evaluating DAC8775 and encountering overshoot, undershoot and ringing. I would be grateful if you could advise. --- We are currently evaluating the DAC8775IRWFR on our prototype board. To confirm…
    • Answered

  • DAC8775: Short event with internal buck-boost

    Resolved
    Part Number: DAC8775 Tool/software: Hello, Our customer has some questions for DAC8775. 1. When using IOUT mode with internal buck-boost and short event happen, does the internal buck boost tries to reduce the VPOS/NEG_IN_x voltage? If so…
    • Resolved

  • DAC8775: The Settling Time issue for DAC8775

    TI Thinks Resolved
    Part Number: DAC8775 Tool/software: Hi, We use the DAC8775 in our PLC AO-module project. Now we test the Settling Time of DAC8775 but the waveform is about more than 1ms, it is slow that it is only 15-30us in the datasheet, please kindly review our…

  • DAC8775: 4-20mA output Issue - incorrect Analog Output

    Part Number: DAC8775 Hello TI team, I'm working with the DAC8775IRWFT (using an STM32 Nucleo board) and running into issues with the 4-20mA current output functionality. I've conducted two tests using two separate ICs and observed different results…

  • DAC8775: 4–20 mA Configuration – Unable to Reach Full-Scale 20 mA Output

    Part Number: DAC8775 Tool/software: Hi, I am working with the DAC8775 in a 4–20 mA output configuration. The output current range is configured correctly, and the DAC output scales linearly. However, the maximum current I’m able to achieve is around…

  • DAC8775: Alarm Pin & Status Bit Observed Contradictions

    TI Thinks Resolved
    Part Number: DAC8775 Tool/software: TI, I’ve read through the datasheet for the DAC8775, but I’m a bit confused about the behavior I’m observing. I’m using the positive buck-boost configuration with a 0–20 mA output on channel C. According to the…
    • Answered

  • DAC8775: Open Circuit Condition

    Resolved
    Part Number: DAC8775 Tool/software: Hi, I was unable to perform testing earlier due to other commitments, but I have now resumed debugging this issue. In continuation of the discussion in the link below: https://e2e.ti.com/support/data-converters…
    • Resolved

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