What is sense amplifier in SRAM?
The sense amplifier is in charge of detecting what value is stored in an SRAM cell during a read cycle and displaying that value at the output. Since only one row of data is accessed during each read cycle, each column of cells within the SRAM array requires only one sense amplifier [3].
What is the purpose of sense amplifier?
A sense amplifier is part of the read circuitry that is used when data is read from the memory; its role is to sense the low power signals from a bitline that represents a data bit (1 or 0) stored in a memory cell, and amplify the small voltage swing to recognizable logic levels so the data can be interpreted properly …
When to use current mirror or current mirror opamp?
Another popular OpAmp when driving only on-chip capacitive loads is the current-mirror OpAmp. Note that at the Q2 side, more current mirrors needs to be used to provide current KI
What’s the difference between a mirror amplifier and a fully differential amplifier?
The main difference between single-ended amplifiers and fully-differential versions is that a current mirror load is replaced by two matched current sources in the later. Notice the power dissipation and slew rate is the same.
What is the gain of a current mirror?
In the revised circuit, the current mirrors at the top have been replaced by current mirrors having two outputs. The first output has a gain of K and goes to the output of the OpAmp as before.
Can a singled-ended mirror opamp be converted to a fully differential one?
The previous singled-ended current mirror OpAmp can be converted to a fully-differential one as below. Similarly, the complementary design using pMOS at input stage is possible. Which one to use depends on whether the load capacitance or second pole are limiting the bandwidth and whether DC gain or bandwidth is more important.