• Lower gain with LTC5585

    Hi,

    We are using LTC5585 for generating quadrature signals. We have observed a gain of -20dB while in datasheet it is shown to have a gain of 2dB. Please clarify this issue.

    Rakesh A

  • LTC5585 output bias resistor value

    Hello,

    I am designing an I/Q Zero IF downconverter using an LTC5585 and amplifier LTC6409 to drive an A/D. The datasheet of the Mixer LTC5585 says  that an output pull-up resistor should be included to guarantee a DC bias voltage of Vcc-1.5V, in my case…

  • RE: LT5575 MxN Spurious Values

    We do not have spur table on LT5575 or other I/Q demodulators. The newer LTC5585 may be a better choice. LTC5585 datasheet page 32 shows its output spectrum, which shows 2x2 and 3x3. Our newest IQ demodulators, LTC5586 and LTC5594, has on-chip HD2 and…

  • RE: LTC5586 : Anti-alias Lowpass Filter

    Many modern highspeed pipeline ADCs have buffered input with 100 to 400 ohm input impedance. In the LTspice example, we showed an ADC with 100 ohm differential input impedance. Even if you use an un-buffered ADC, it is recommended to double-terminate…

  • ADG794

    I need to switch a differential analog signal with a common-mode voltage of 3.5 volts (output from an LTC5585 IQ demodulator) with at least 300 MHz of signal bandwidth into various gain stages and bandwidth-limiting filters, 25 to 250 MHz .  The ADG794…

  • RE: AD9639 serial stream

    Hi Jonathan,

     

    As I understand it, the JESD204 standard only covers streams to 3.125GBps. How can the AD9639 then be compliant with JESD204 when it operates at a maximum of 4.2GBps?

     

    Can you confirm whether any other default registers not mentioned…

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