Its like spaceships going to warp speed and red shifting when going fast. And reaching speeds
of insanity start blue shifting. Then of course in Spaceballs the only color suitable for Ludacris
Speed is going to plaid.
If your going to mirror your mirror's. Then its only fair to add current sources to your current sources.
They have feelings too. ok just kidding
of insanity start blue shifting. Then of course in Spaceballs the only color suitable for Ludacris
Speed is going to plaid.
If your going to mirror your mirror's. Then its only fair to add current sources to your current sources.
They have feelings too. ok just kidding
I think you are onto something here!
So here it goes: cascoded constant current source supplies current to cascoded and bootstrapped Long Tailed Pair that is in turn loaded to the cascoded Current Mirror. Ah, the perfection!
I(R4) = 2.0227059mA
I(R5) = 2.0227046mA
delta[] = 0.0000013mA
CCS delta[] = 0.000145mA
Attachments
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So after playing with the cascoded and individually bootstrapped LTP arrived at schematics that is attached.
CCS is a simple two BJT feedback one but with 1k base resistor to create nice HF response.
200R degeneration resistors give nice square response with MC, TPC, or TMC.
High precision CM to minimize voltage offset at the output.
CCS is a simple two BJT feedback one but with 1k base resistor to create nice HF response.
200R degeneration resistors give nice square response with MC, TPC, or TMC.
High precision CM to minimize voltage offset at the output.
Attachments
Hi everyone.
I have modified this version of the amplifier in the simulator. It has very low distortion, a very good clip and starts well after 1.5 milliseconds and goes into operation after about 30 milliseconds. I think this scheme should work. Any comments and suggestions.
I have modified this version of the amplifier in the simulator. It has very low distortion, a very good clip and starts well after 1.5 milliseconds and goes into operation after about 30 milliseconds. I think this scheme should work. Any comments and suggestions.
Attachments
One thing puzzles me (didn't notice earlier):
The first LTP is loaded by a current mirror - doesn't this convert the output to single ended?
Nonetheless, both legs of the first LTP are routed to the inputs of the second LTP.
I guess the first LTP should have a differential load to preserve output swing on both legs?
The first LTP is loaded by a current mirror - doesn't this convert the output to single ended?
Nonetheless, both legs of the first LTP are routed to the inputs of the second LTP.
I guess the first LTP should have a differential load to preserve output swing on both legs?
HAYK did notice this already @ #8.
Don't trust simulations.