low noise replacement for LM748 opamp

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Posts: 13
Joined: Fri May 31, 2002 1:01 am

low noise replacement for LM748 opamp

Post by al » Fri May 31, 2002 12:29 am

looking for a low noise precision replacement for an LM748 opamp for audio use 20-20Khz. Looking for a pin for pin drop in replacement. Ideas appreciated. Data sheet for LM748 can be viewed at http://www.national.com/ads-cgi/viewer. ... /LM748.pdf

Posts: 563
Joined: Thu Dec 06, 2001 1:01 am
Location: New Hampshire

Re: low noise replacement for LM748 opamp

Post by russlk » Sat Jun 01, 2002 5:04 am

As stated on the data sheet, it is the same pinout as the LM101A which is rated for noise. What do you want?

Timothy Rasch
Posts: 142
Joined: Mon Mar 04, 2002 1:01 am
Location: Green Bay ,Wisconsin

Re: low noise replacement for LM748 opamp

Post by Timothy Rasch » Sun Jun 02, 2002 10:08 pm

The Lm748 can be replaced depending on the version for example: LM748CN=NTE975 OR ECG975;LM748H,LM748CH=NTE1171 OR ECG1171.I have used ECG975 with good success in audio circuits.
Do you have any data on Carver DPL-33 sound processor amp? I need data on the following chips in this sound processor: TB2102N,LA2730,LA2770,TC9150. The la's are dolby ic's but no data exists at manufacture Sanyo.There are many problems in surround, and Dolby part. If signal is applied to one channel it comes out both. If same signal is applied to both channel the sound is canceled. I don't think this is normal. please email me at [email protected]

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