Main > Monitor/Video Forum
Video amp (RGBs) to boost SCART to arcade monitor
PL1:
--- Quote from: arcadeswede on May 14, 2020, 04:38:21 pm ---So, do I then take 15dB which is 5.56 voltage gain and multiply that with the 0.7Vpp voltage like so, 0.7 x 5.56 = 3.92Vpp ?
Is this the maximum amplification I can do with this THS7375 chip?
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The datasheet indicates "5.6-V/VGain(14.95dB)" so it looks like you're on the right track. ;D
Scott
buttersoft:
The THS7374 will work fine and is about as good quality as you can get, but a lot of other things will work ok. The THS7375 you refernce looks about the same as the THS7374 save the higher gain, which isn't needed (and i've be careful feeding anything over about 4Vp-p into a video amp as it might top out at 5V if there are IC's involved). I can't find one for sale at any of the usual places though, so if you do find any they might be worth a packet :)
arcadeswede:
--- Quote from: buttersoft on May 20, 2020, 06:54:47 am ---The THS7374 will work fine and is about as good quality as you can get, but a lot of other things will work ok. The THS7375 you refernce looks about the same as the THS7374 save the higher gain, which isn't needed (and i've be careful feeding anything over about 4Vp-p into a video amp as it might top out at 5V if there are IC's involved). I can't find one for sale at any of the usual places though, so if you do find any they might be worth a packet :)
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Mouser have them in stock!
I'll maybe order some one day and try to figure out a schematic.