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  • PGA117: Data Sheet Questions

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    Part Number: PGA117 Hello Texas Instruments, 1) If AVDD and DVDD are both 3.3V same exact voltage regulator part number but two different parts. Could this be a problem? Page 41 says make AVDD above DVDD so V out does not raise AVDD. I assume they will…
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  • PGA117: accuracy of current sense measurement

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    Part Number: PGA117 Other Parts Discussed in Thread: OPA325 , LM7705 , INA190 , INA851 , INA333 , TINA-TI Hello TI E2E, I am attaching 3 screenshots with this post for clarity. I have a programmable current source that ranges from 0.5mA to ~6A. I am trying…
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  • RE: PGA117: mux switch frequency of PGA117

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    HI User, The errors using the TMUX1309 proposal 1 at +125C will be in around the 100s of microVolts, approaching around ~0.5mV. The simulation below shows a simplified model for the switch using the very worst case RON resistance and leakage current…
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  • Writing to PGA117

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    Other Parts Discussed in Thread: PGA117 , PGA112 Hello, On page 27 of the PGA117 family datasheet, it has SPI commands for the PGA112/113 and also daisy-chain commands but I don't see where it specifically states what commands I would use for the PGA117…
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  • LMP8358MT usage with PGA117

    Other Parts Discussed in Thread: PGA117 , LMP8358 Hello, I currently have 4 LMP8358MTs connected to CH1, CH2, CH3, and CH4 of the PGA117. I am currently trying to test my LMP8358MT by sending 0x3a and 0x01 to tell the PGA117 to set the gain to 1 on CH1…

  • PGA117: How to verify SPI sent correctly?

    TI Thinks Resolved
    Other Parts Discussed in Thread: PGA117 , PGA112 , PGA113 Hello, I currently am trying to write to the PGA 0x2a and 0x09 (mux CH9 with gain 1). Here is the scope snapshot of what I am sending to the PGA: http://imgur.com/rZo8slL. However, I am unable to…
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  • PGA117 Shutdown Mode: Safe Apply Voltage to Inputs?

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    Other Parts Discussed in Thread: PGA117 Hello, I see that you can shutdown the PGA117 via SPI. However, I couldn't find anything in the data sheet that states whether or not it is safe to apply any type of voltages if I either it shutdown via SPI or cut…
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  • PGA117 for volt and current measurement

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    Other Parts Discussed in Thread: PGA117 , PGA113 i need help to calculate volt and current measurement with pga117 ic where i want to measure 0 to +/- 1000 volt dc in one input and other input i want to measure 0 to +/- 10 ampere dc using shunt resistor…
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  • Using PGA117 as a thermocouple amplifier

    Other Parts Discussed in Thread: PGA117 , PGA281 , PGA280 Hello, Can someone suggest a suitable circuit for using PGA117 as a thermocouple amplifier. The input may go down to -10mV. Will a bias on Vref pin and connecting the T/C between Vref and an input…

  • Daisy Chain on PGA117

    Other Parts Discussed in Thread: PGA117 I'm referring to figure 66 on the datasheet of PGA117 (literature named SBOS424B–MARCH 2008–REVISED SEPTEMBER 2008). The figure illustrates the daisy chain read configuration with two PGA117 devices connected in…

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