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  • DAC8775: DAC8775 analog-output transient limits and continuous +/-24 V miswiring

    Part Number: DAC8775 Other Parts Discussed in Thread: TVS3301 , TPS2661 Please review the following unassembled prototype circuit and advise the supported protection approach. DAC8775, positive-only adaptive VPOS per channel, nominal 20 V minimum /…
    • Answered

  • 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

  • DAC8775: Obsolescence Reasons

    TI Thinks Resolved
    Part Number: DAC8775 Hi there, We're using DAC8775IRWFT in a design and it is now marked as obsolete, which DAC8775IRWFR as the active PN. How do we find information on the difference? I've seen this happen in multiple TI products but I don't know how…
    • 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…

  • 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…
    • 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: 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…

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