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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Re: apparent leanness of LM6172 (see Ehien) posted by NormanCdn on February 8, 2002 at 06:45:24:
Hi,The answer is simple, assuming there are no Powersupply problems present (inadequate HF bypassing, insufficient Capacitance at LF), that the LM6172 unlike the OPA604 and even the 637 behaves as "straight wire with gain".
All the OPA's you mention have a distinct rise of distortion even in the audio band, the LM6172 remains basically the same up to a few 100KHz.
However, the Powersupply may be very well the reason, as the LM6172 has a much lower PSRR due to it's inherent design, so greater care is needed here than with classic "differential" Op-Amp's.
Later T
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Follow Ups
- Re: apparent leanness of LM6172 (see Ehien) - Thorsten 07:36:08 02/08/02 (17)
- Re: apparent leanness of LM6172 (see Ehien) - tropiclcb 17:15:39 02/08/02 (4)
- Re: apparent leanness of LM6172 (see Ehien) - Thorsten 03:55:57 02/09/02 (3)
- Re: apparent leanness of LM6172 (see Ehien) - rwiley 11:48:10 02/22/02 (0)
- Re: apparent leanness of LM6172 (see Ehien) - rwiley 09:05:43 02/22/02 (0)
- BlackGates? - Sasha 06:27:04 02/12/02 (0)
- PSRR of 6172 - Ehien 16:58:41 02/08/02 (10)
- Re: PSRR of 6172 - eagle1 06:53:29 02/09/02 (8)
- Zerodistortion, LM6172 and not reading App Notes.... - Thorsten 07:55:03 02/09/02 (7)
- Re: Zerodistortion, LM6172 and not reading App Notes.... - rwiley 20:47:26 02/24/02 (0)
- Re: Zerodistortion, LM6172 and not reading App Notes.... - dekbearder 16:18:14 02/09/02 (2)
- Re: Zerodistortion, LM6172 and not reading App Notes.... - Thorsten 04:06:07 02/10/02 (1)
- Re: Zerodistortion, LM6172 and not reading App Notes.... - dekbearder 11:42:45 02/11/02 (0)
- Re: Zerodistortion, LM6172 and not reading App Notes.... - eagle1 09:10:56 02/09/02 (2)
- Siemns Stacked Film Cap's - Thorsten 11:41:01 02/09/02 (1)
- Thanks T! Will try to put my hands on these yummies! NT - eagle1 12:29:34 02/09/02 (0)
- Re: PSRR of 6172 - Thorsten 04:01:12 02/09/02 (0)
- Re: apparent leanness of LM6172 (see Ehien) - NormanCdn 08:13:01 02/08/02 (0)
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