Search Engine www.edaboard.com

Slew Rate 741

Add Question

12 Threads found on edaboard.com: Slew Rate 741
The power darlington transistors need heatsinks. If the output voltage swing is as high as 8V RMS then the output power is 8W into 8 ohms and each darlington heats with almost 2W. The 741 opamp was designed 48 years ago! It is noisy and its slew rate cuts its high level frequencies above only 9kHz. A modern low noise audio opamp works (...)
Read 741 datasheet, look at slew rate specification (typical 0.5 V/?s). Calculate maximum triangle and undistorted sine voltage at 1 MHz according to this specification.
The graph of slew rate in the datasheet shows when a sinewave begins to be distorted by switching speed. The TL072 does very well up to 100kHz. A lousy old 741 opamp curls up and dies above only 9kHz. An LM324 and LM358 are useless above only 2kHz.
I won't do your work for you but I will help you do it. :wink: If you compare the two data sheets you will see the differences in such important parameters as: Input voltage offset Input bias current Power and voltage requirements Input common-mode voltage range Output voltage swing Output slew rate Amplifier gain-bandwidth product Do a comparis
The 741 opamp design is 46 years old and is not suitable for audio because it is too noisy (hiss) and its low slew rate limits and distorts frequencies above 9kHz. The polarity of C7 and D1 are wrong and D1 wrongly connects to ground instead of to the positive supply. C7 and D1 and D2 and C8 cause distortion for the first pulse of music (...)
why opamp has infinite input impedance, infinite bandwidth, infinite slew rate, infinite CMRR, Zero output impedance, infinite voltage gain. please its urgent. suchita As mentioned in post#2, you have listed IDEAL conditions that never can be met. However, to answer your questions: All opamp manufacturers try to
....the frequency is 166khz ..... The 741 type opamp has again of less than 10 at 166 kHz. More than that, the limited slew rate allows not more than some hundreds of mV (output) at that frequency.
From the 741 spec sheet, its slew rate is slow, compared to many other op amps. Example, the 5534 is a popular high-quality type. I'm not sure how to advise on whether your setup would benefit from an op amp that works from a single supply, or from a bipolar supply.
About 32 yeas ago, Motorola made an improved 741S. It had a high slew rate but was still with a poor frequency response and was noisy.
is there any possibility of improving slew rate of a op-amp IC 741
OK..now how to increase slew rate and why?
Hi every one I have dsigned a circuit with lm741 but its high input noise and its low slew rate is so bad for my there an op-amp like lm741 but with lower noise and higher slew rate.note that is footprint must be same as 741. thanks