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  • LMH6881: Amplifiers forum

    Part Number: LMH6881 Tool/software: Hello， The datasheet specifies that all measurements refer to the device output pins unless otherwise stated. How should I interpret the power gain (Gp) calculation in Figure 43 when the voltage gain (Gv) is 26 dB…

  • LMH6881: LMH6881 Single-ended input impedance 50Ω

    Part Number: LMH6881 Hi All, Refer to LMH6881 datasheet , single-ended input impedance is about 50 Ω . Actually I use vecter network analyzer to measure the input impedance and found the single-ended input impedance is very low and about 4Ω. I checked…

  • LMH6881: Device getting hot and partially destroying itself, possible latch-up?

    Part Number: LMH6881 Tool/software: Hi, I have a daughterboard which uses LMH6881 devices. When tested on the bench (not fitted to end-use mother board) the devices operate correctly. However, when it is fitted to the motherboard it is designed…

  • LMH6881: 1Ghz and G=10 differential to single-ended large signal amplifier

    Other Parts Discussed in Thread: LMH6881 , OPA818 , OPA817 Tool/software: Hello! I have a signal chain which ends with a LMH6881 2.4GHz differential PGA. I am looking for a current product to convert the differential output of the LMH6881 into a…

  • LMH6881: LMH6881

    TI Thinks Resolved
    Part Number: LMH6881 We have cascaded 2 stages of LMH6881. Both Stages have supplies and all control lines with series ferrite beads to provide good isolation. When Gain is increased above 10dB we observe oscillation. 50 Ohms Series resistor is used…
    • Answered

  • LMH6881: Noise density with gain condition

    Resolved
    Part Number: LMH6881 Hello team, LMH6881 datasheet provides output noise density and input referred noise density information with maximum gain(26dB) condition only. How can we know or calculate noise density(output or input referred) with different…
    • Resolved
    • Answered

  • LMH6881: Setting common mode voltage for 3.3V differential ADC application

    Resolved
    Part Number: LMH6881 Hello, We would like to use the LMH6881 differential output to interface to a differential 3.3V STM32 ADC. This would require us to set the common mode output voltage to 1.65V for our desired maximum range. According to the datasheet…
    • Resolved
    • Answered

  • LMH6881: Input referred noise condition

    Resolved
    Part Number: LMH6881 Other Parts Discussed in Thread: TINA-TI Hello team, Input referred voltage noise of LMH6881 is specified as typ 2.3nV/rtHz in its datasheet. Which differential input or single end input is valid for the noise spec? Best regards…
    • Resolved
    • Answered

  • LMH6881: additional info for programming

    Resolved
    Part Number: LMH6881 Other Parts Discussed in Thread: USB2ANY Please update the datasheet with this information. The address field is in HEX, meaning the Register3 address is 0011. The write bit is logic 0, and the read bit is logic 1. Thank You…
    • Resolved

  • LMH6881 output drift

    TI Thinks Resolved
    Part Number: LMH6881 Other Parts Discussed in Thread: ADS4128 , OPA657 , TINA-TI Hello, I use the LMH6881 as the second amplifier and the ADS4128 to sample the data. The schematic is below: The pulse (pulse width=20ns, pulse period=50ns, tr/tf=2…

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