Practical examples Differentials and Current Mirrors (Part-II)

Functional Block Diagram of LM741

A quick glimpse into the lives of differential amplifiers and current mirrors.

Here again we bring out the tried and trusted LM741.

Functional Block Diagram of LM741
Schematic 1.  Functional Block Diagram of LM741

I doubt there is anyone in the electronics field that hasn’t worked with or come across one or more of the most popular op-amps of all time, the LM741.  We peer inside schematic 1 and lo and behold, differential amplifiers and current mirrors. Q9 and Q10 are the current source, Q10 and Q11 the current sink. Continue reading “Practical examples Differentials and Current Mirrors (Part-II)”

National LM4702 Vs Sanken STK350-xxx

A look into National Semiconductor’s LM4702 VAS

First thing here for those that aren’t aware:  “SANTA CLARA, Calif., Sept. 23, 2011 /PRNewswire/ — Texas Instruments Incorporated (TI) (NYSE: TXN) today announced the acquisition of National Semiconductor (NYSE: NSM) is complete.”

I thought the first paragraph is relevant to our subject based on the confusion come across in forums on who owns what.

The LM4702 driver Continue reading “National LM4702 Vs Sanken STK350-xxx”