Info

Hi,

  ADV7123 is an 10-bit digital-to-analog converter but if you want to support that 480x240 format in 6 bit just tie off the lower bits to ground.

Thanks,

Poornima

Thank you for reply and for sharing info . Unfortenately i today  have tried this way and says unsupported  maybe i shoud look for another IC it engages monitor only with hsynch connected clock is sine wave and hsync is falling edge im trying to convert old lcd screen from car to vga or composite output it will be great if u can point me for suitable IC to get . Thank you again. 

Hi,

ADV739x/ADV734x are a family of high speed, Digital-to-Analog video encoders on Single Monolithic Chips.
ADV739x/ADV734x encoder can support for composite (CVBS), S-Video (Y-C), or Component (YPrPb/RGB) analog outputs in either standard definition (SD) or high definition (HD) video formats at https://ez.analog.com/video/w/documents/801/adv739x-design-support-files

Which ADV739x video encoder should I choose? This attached file compares all members of the ADV734X and ADV739X series of parts.These are the latest video encoder parts on offer from ADI.

Also ADV8005 can meet your requirement. Please check the respective product page at ADV8005 Datasheet and Product Info | Analog Devices

Video can be output from the ADV8005 using one or both of the HDMI transmitters and/Or the Six-DAC SD/HD video encoder. The Six12-bit NSV video DACs allow composite (CVBS), S-Video (Y/C), and component (YPrPb) analog outputs in Standard, Enhanced, and High-definition video formats.

Also it can support dither mode.

Please note "ADV7123/5 can support VGA output, but it will require RGB444 input".

Thanks,

Poornima

Hi,

ADV739x/ADV734x are a family of high speed, Digital-to-Analog video encoders on Single Monolithic Chips.
ADV739x/ADV734x encoder can support for composite (CVBS), S-Video (Y-C), or Component (YPrPb/RGB) analog outputs in either standard definition (SD) or high definition (HD) video formats at https://ez.analog.com/video/w/documents/801/adv739x-design-support-files

Which ADV739x video encoder should I choose? This attached file compares all members of the ADV734X and ADV739X series of parts.These are the latest video encoder parts on offer from ADI.

Also ADV8005 can meet your requirement. Please check the respective product page at ADV8005 Datasheet and Product Info | Analog Devices

Video can be output from the ADV8005 using one or both of the HDMI transmitters and/Or the Six-DAC SD/HD video encoder. The Six12-bit NSV video DACs allow composite (CVBS), S-Video (Y/C), and component (YPrPb) analog outputs in Standard, Enhanced, and High-definition video formats.

Also it can support dither mode.

Please note "ADV7123/5 can support VGA output, but it will require RGB444 input".

Thanks,

Poornima

Thank you verry much i will check what can do the job for me . I want to use data from Sharp LQ070T5DR02 lcd screen . Have a nice day 

Hi,

  Thank You.

  If anything, Please let us know.

Thanks,

Poornima