LM308 DATASHEET PDF

Zuluk The datashdet on the left has 10 emitters wired together, creating a transistor with an effective emitter size of 10 times normal. Hierarchical block is unconnected 3. I also tried to put 3. LM Datasheet LM can work with single supply??? In the die photo, these regions have ratasheet slightly different color, which makes the structure of the chip visible under the metal. The LM11 schematic shows weird transistors that are half lm and half superbeta, an exact dataasheet for these puzzling transistors.

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Zuluk The datashdet on the left has 10 emitters wired together, creating a transistor with an effective emitter size of 10 times normal. Hierarchical block is unconnected 3. I also tried to put 3. LM Datasheet LM can work with single supply??? In the die photo, these regions have ratasheet slightly different color, which makes the structure of the chip visible under the metal. The LM11 schematic shows weird transistors that are half lm and half superbeta, an exact dataasheet for these puzzling transistors.

This version has a totally different second stage, output stage, and current biasing. Why is mV measured? Read page 5 of your data sheet link, look at the graphs. How reliable is it? Thus, the current mirror provides a mirror image on the right of the fixed current on the left. The current mirror The schematic above uses a symbol that you may not be familiar with: It would be an interesting and educational project, but not too practical if you just want an op datzsheet This image shows one of the superbeta transistors in the LM op amp.

Only a few degrees gradient can cause hundreds of datasheey. Testing low drift amplifiers is also difficult Standard drift. On the chip, these diodes are implemented with transistors. Dec Transistors Q5 and Q6 are in a cascode configuration. Distorted Sine output from Transformer 8. Schematic of a simple differential pair circuit. The devices operate with supply voltages from g 2V to.

The resistance of R20 controls the current into the current mirror. An another op amp http: That is, Q13 will pull the output high and Q14 will pull the output low. They form a second differential amplifier that amplifies the output of the first stage.

Note the large, round emitter. The latter is an excellent book written by Hans Camenzind, the inventor of the timer, so definitely check out the PDF version. The whitish-yellow areas are the metal layer of the chip on top of the dxtasheet form the wires connecting to the collector, emitter, and base. It is strange that my chip is labeled National Semiconductor but its circuit does not match the National Semiconductor datasheet.

Voltage follower with antique lm op amp Ask Question. Notes and references [1] By all reports, Robert Widlar was an amazing analog engineer, as well as an alcoholic crazy guy.

LM Question I think you misunderstood my problem. Post as a guest Name. Datashee magic word here is bias. Instead of resistors, Q15 and Q16 form the load for the second stage differential amplifier. By studying the schematics closely, I think I solved the puzzle of these strange and unused components. Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7. All chips use the same output stage green. With simple feedback circuits, you can use an op amp as an amplifier, a filter, integrator, differentiator, or a variety of other circuits.

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