how to extend a 8bits DAC pecision to 10 bits 12bit and more

I buy a AD9708 ,however its resolution is not enough for my system ,so I  want to extend the resolution of DAC in software  ,is there any way ? I read some articles of  PWM ? sigma-delta ? thanks  a lots for your answers 

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    •  Analog Employees 
    on Jun 14, 2021 10:19 PM

    Hello, 

    Not sure if I fully understand the question, but if you need a 10-bit DAC why did you buy an 8-bit DAC?... I do not mean to be cavalier about it, but if DAC resolution could be easily increased through software, why would ADI offer HS DACs with 8, 10, 12, 14, and 16-bit variants, each priced according to their resolution?

    A good 14-bit alternative to the AD9708 is the AD9744. AD9740 and AD9742 are its 10-bit and 12-bit variants, with AD9740 is priced similarly to AD9708. 

    AD9744 Datasheet and Product Info | Analog Devices 

    Landsman

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  • 0
    •  Analog Employees 
    on Jun 14, 2021 10:19 PM

    Hello, 

    Not sure if I fully understand the question, but if you need a 10-bit DAC why did you buy an 8-bit DAC?... I do not mean to be cavalier about it, but if DAC resolution could be easily increased through software, why would ADI offer HS DACs with 8, 10, 12, 14, and 16-bit variants, each priced according to their resolution?

    A good 14-bit alternative to the AD9708 is the AD9744. AD9740 and AD9742 are its 10-bit and 12-bit variants, with AD9740 is priced similarly to AD9708. 

    AD9744 Datasheet and Product Info | Analog Devices 

    Landsman

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