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dram/sram, how many sense amps needed?

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wwfieee

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hi,

for a particular sized dram and sram cell, how many sense amps do you need? for example a 512 X 512 X 8 (bit) memory array, how many sense amps would be needed for dram and sram?

I know that each column in sram would have 8 sense amp for the 8 bits. that makes 8 X 512 sense amps total? or just 8 sense amps (all 512 columns sharing it)?

how about dram? how many sense amp would it need per column, and total column?

I have searched online for this info, but most of them just show a box of sense amps and didn't mention about the number of sense amps needed.
 

well, the way some text books explain for 1 T Dram, they specificaly say that each bit line will require a sense amp because they are single ended output. It seems to imply that the Dram would require more sense amps than Sram.

But 1 T Dram has only one bitline instead of 2 bitline, and so like you said, 1 column of Dram will have 8 sense amps.

It is the way some text book presents the material that is confusing me.

So I just want to confirm that although Sram has bitline and bitline-bar, it uses a differential sense amp because it is differential. A Dram has only a bitline and it uses a sense amp. So, both RAMs will require the same amount of sense amps.
 

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