• About AD9763.

    About AD9763.

    Can you tell me what I should do about unused pins if I use port1 only ?
    Unused pins are CLK2/IQRESET,WRT2/IQSEL,DB0-P2~DB9-P2/MSB,IOUTA2 and IOUTB2.
    Connecting to ground, power supply, or nothing?
    What should I do more except these?

  • With regards to AD9763

    Hi ,

    Could you please let me know the –40°C to +85°C as Operating temperature same as Case temperature (Tcase) or is it Ambient Temperature.

    Could you please let me know if there is any data with regards ThetaJC .

    Thanking you

    With best regards and…

  • RE: AD9761 and AD9763

    My apologies I answered you based on the AD9961 and AD9963. The AD9761 and AD9763 were introduced in 1999. The AD9763 and AD9761 are not recommended for new designs. You can look for alternatives in the selection table for high speed DACs on www.analog…

  • AD9763 digital inputs threshold


    I am working with AD9763 DVDD=AVDD=3.3V.

    I would like to drive the digital inputs (CLK, WRT, DB) with 2.5V pins from FPGA (the VOH Min of the FPGA is 2V). According to the AD9763 datasheet "Logic 1 Voltage @ DVDD1 = DVDD2 = 3.3 V is 2.1V" but…

  • AD9763 output state on power up


    What is AD9763 output state on power up ?

    I think that this output state on power up is indeterminate.

    Is my understanding correct ?

    Now,  our AD9763 output on power up is  about 0 at IOUT1 and about full-scale output at IOUT2.

    (We have not configured…

  • RE: AD9763 AD9765 AD9767 Interleaved mode with 125 MSPS update rate possible?


    Apologies for the delayed response. 

    The t_h specified in table 3 should be the hold time for rising edge of WRT and the data in (Please refer to figure 2). This does not specify the t_h* shown in figure 64 but rather shows that IQSEL should…

  • Can AD9763's NC pins (i.e. pin 33 & 34) be driven or must they be definitely left floating?

    Can AD9763's NC pins (i.e. pin 33 & 34) be driven or must they be definitely
    left floating?
    We have the option to fit the AD9763 or the AD9765 on the same board. When the
    AD9763 is fitted the DB0 & DB1 N/C pins (i.e. pins 33 and…
  • TxDAC Two Singles vs. One Dual

    I'm adapting a design from a retired engineer with two discrete AD9705s being used for IQ modulation. I noticed that in an earlier design, he had used a single AD9763. Comparing both of these options, it seems that the two discrete AD9705s beat the AD9763…

  • RE: AD9767 SNR & ENOB

    Thanks for your reply.

    From Fig 68, could I say that the ENOB of  AD9767 is lower than AD9763 ?