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Groups > sci.electronics.design > #518869
| From | Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: really fast buffers |
| Date | 2018-10-10 14:06 +0200 |
| Message-ID | <g268amFednuU1@mid.individual.net> (permalink) |
| References | <gnaardpdk6o2lvfm2fd10d0b15mj8lpkgv@4ax.com> <g1sjm5Ffa4qU1@mid.individual.net> <ppd4lu01sfe@drn.newsguy.com> |
Am 07.10.2018 um 16:19 schrieb Winfield Hill:
> Gerhard Hoffmann wrote...
>>
>> BTW, I have built a variation of Winfield's 70 pV/rtHz amplifier
>> from AoE3. The non-differential version, since my source is
>> never centered around 0 Vdc. Works as promised. :-)
>>
>> Yes, it could use even more 'lytics, but that was a test balloon for
>> a chopper amplifier. At 500 kHz the caps are no more that critical.
>>
>> https://www.flickr.com/photos/137684711@N07/45141749941/in/album-72157662535945536/
>
> Nice! Please post your complete schematic. We only show a
> common-emitter amplifying stage, with millions of paralleled
> transistors, and our measurements, pages 506-509.
>
>
<
https://www.flickr.com/photos/137684711@N07/31348447748/in/album-72157662535945536/
>
and the pictures to the left & right.
The noise simulation tends to be optimistic.
There is now a negative version of LT3042 / 3045 : LT3094 :-)
negative voltage regulator, 2.2 nV/rt Hz
regards,
Gerhard
Version 4
SHEET 1 2048 1328
WIRE -240 -1136 -320 -1136
WIRE -240 -1120 -240 -1136
WIRE -48 -1104 -192 -1104
WIRE 176 -1104 -48 -1104
WIRE 224 -1104 176 -1104
WIRE 336 -1104 224 -1104
WIRE -192 -1072 -192 -1104
WIRE -240 -1056 -240 -1120
WIRE -368 -1024 -384 -1024
WIRE -320 -1024 -320 -1056
WIRE -320 -1024 -368 -1024
WIRE 176 -1024 176 -1104
WIRE -320 -1008 -320 -1024
WIRE -192 -944 -192 -992
WIRE -288 -928 -320 -928
WIRE -240 -928 -240 -1008
WIRE -240 -928 -288 -928
WIRE -192 -928 -192 -944
WIRE -48 -928 -48 -1104
WIRE -288 -912 -288 -928
WIRE 48 -880 16 -880
WIRE 96 -880 48 -880
WIRE 176 -880 176 -944
WIRE 48 -848 48 -880
WIRE -48 -752 -48 -832
WIRE 176 -656 176 -880
WIRE 256 -656 176 -656
WIRE 320 -656 256 -656
WIRE 176 -624 176 -656
WIRE 352 -576 240 -576
WIRE 352 -560 352 -576
WIRE 176 -496 176 -528
WIRE 176 -464 176 -496
WIRE -224 -416 -288 -416
WIRE -208 -416 -224 -416
WIRE -48 -416 -48 -672
WIRE -48 -416 -144 -416
WIRE 112 -416 -48 -416
WIRE -288 -352 -288 -416
WIRE -48 -352 -48 -416
WIRE 176 -272 176 -368
WIRE -288 -208 -288 -272
WIRE -288 -176 -288 -208
WIRE -288 -64 -288 -96
FLAG -192 -848 0
FLAG -288 -64 0
FLAG 224 -1104 vcc
FLAG -288 -208 vgen
FLAG -288 -912 0
FLAG -368 -1024 v3p
FLAG -240 -1120 v3r
FLAG -192 -944 v1p
FLAG -48 -272 0
FLAG 48 -784 0
FLAG 256 -656 raus
FLAG 352 -480 0
FLAG 176 -496 c1
FLAG 176 -272 0
FLAG -288 -576 0
FLAG -224 -416 rein
SYMBOL voltage -192 -944 R0
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 -52 151 VTop 2
SYMATTR InstName V1
SYMATTR Value 7
SYMATTR SpiceLine Rser=0.001
SYMBOL voltage -288 -192 R0
WINDOW 123 24 160 Left 2
WINDOW 39 24 132 Left 2
WINDOW 3 -155 185 Left 2
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=0
SYMATTR Value SINE(0.0 0.001 2000000 0 0 0)
SYMATTR InstName V2
SYMBOL cap -144 -432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10000µ
SYMATTR SpiceLine Rser=1m
SYMBOL e -192 -1088 R0
SYMATTR InstName E1
SYMATTR Value 2
SYMBOL res -336 -1152 R0
SYMATTR InstName R1
SYMATTR Value 60
SYMBOL voltage -320 -1024 R0
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 -57 138 VTop 2
SYMATTR InstName V3
SYMATTR Value 0.1µ
SYMATTR SpiceLine Rser=0.1
SYMBOL res -64 -368 R0
SYMATTR InstName R2
SYMATTR Value 2k2
SYMBOL res -64 -768 R0
SYMATTR InstName R3
SYMATTR Value 2k2
SYMBOL res 192 -896 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 22k
SYMBOL cap 32 -848 R0
SYMATTR InstName C3
SYMATTR Value 100µ
SYMBOL npn 16 -928 M0
WINDOW 0 -8 -39 Left 2
WINDOW 3 -55 -11 Left 2
SYMATTR InstName Q3
SYMATTR Value ZTX851
SYMBOL res 160 -1040 R0
WINDOW 123 37 107 Left 2
SYMATTR Value2 m=3
SYMATTR InstName R5
SYMATTR Value 51
SYMBOL npn 112 -464 R0
WINDOW 0 91 30 Left 2
WINDOW 3 89 86 Left 2
WINDOW 123 91 58 Left 2
SYMATTR InstName Q4
SYMATTR Value ZTX851
SYMATTR Value2 m=16
SYMBOL npn 240 -624 M0
WINDOW 0 91 30 Left 2
WINDOW 3 89 86 Left 2
WINDOW 123 91 58 Left 2
SYMATTR InstName Q1
SYMATTR Value ZTX851
SYMATTR Value2 m=16
SYMBOL voltage 352 -576 R0
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 -52 151 VTop 2
SYMATTR InstName V4
SYMATTR Value 2.9
SYMATTR SpiceLine Rser=0.001
SYMBOL res -304 -592 R0
SYMATTR InstName R6
SYMATTR Value 0.05
SYMBOL res -304 -368 R0
SYMATTR InstName R7
SYMATTR Value 1m
TEXT 272 -840 Left 2 !;tran 0 2m 1.97m
TEXT -104 -1128 Left 2 ;Vcc + E1 * 1n VRtHz noise
TEXT 272 -864 Left 2 !.op
TEXT 272 -808 Left 2 !.noise v(raus) V2 dec 1000 1 1e6
TEXT 272 -784 Left 2 !;ac dec 1000 10 10Meg
TEXT 264 -728 Left 2 !.temp 20 40 60
TEXT -344 -208 VLeft 2 ;50/0.005 Ohm = - 60 dB attenuator
TEXT 432 -256 VLeft 2 ;BZX84C2v7 + cap + Res to Vcc
TEXT -128 -216 Left 2 ;Q1 is really one 2SC3420 because avail. but model
missing.
TEXT -104 -168 Left 2 !*ZETEX ZTX851 Spice model Last revision
21/1/93 (C) 1993 ZETEX PLC\n\n* 200 pV/rtHz lt AOE3\n\n*\n\n.MODEL
ZTX851 NPN IS =1.0085E-12 NF =1.0001 BF =240 IKF=5.1 VAF=158\n\n+
ISE=2E-13 NE =1.38 NR =0.9988 BR =110 IKR=5.5 VAR=46 \n\n+
ISC=4.6515E-13 NC =1.334 RB =0.025 RE =0.018 RC =0.015 \n\n+
CJC=155E-12 MJC=0.4348 VJC=0.6477 CJE=1.05E-9 \n\n+ TF
=0.79E-9 TR =24E-9
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really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-03 15:03 -0700
Re: really fast buffers Lasse Langwadt Christensen <langwadt@fonz.dk> - 2018-10-03 15:23 -0700
Re: really fast buffers Andy Bennet <andyb@andy.com> - 2018-10-04 08:20 +0100
Re: really fast buffers Lasse Langwadt Christensen <langwadt@fonz.dk> - 2018-10-04 08:45 -0700
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-03 15:52 -0700
Re: really fast buffers George Herold <gherold@teachspin.com> - 2018-10-03 18:08 -0700
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-03 20:02 -0700
Re: really fast buffers bitrex <user@example.net> - 2018-10-03 21:54 -0400
Re: really fast buffers Steve Wilson <9fe142ac@gmail.com> - 2018-10-03 20:10 -0700
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-03 20:40 -0700
Re: really fast buffers pcdhobbs@gmail.com - 2018-10-04 05:00 -0700
Re: really fast buffers Steve Wilson <9fe142ac@gmail.com> - 2018-10-04 08:39 -0700
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-04 12:38 -0400
Re: really fast buffers Steve Wilson <9fe142ac@gmail.com> - 2018-10-04 14:35 -0700
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-04 18:27 -0400
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-05 03:21 +0000
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-05 10:38 -0400
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-04 11:50 -0700
Re: really fast buffers Clifford Heath <no.spam@please.net> - 2018-10-05 09:26 +1000
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-04 17:09 -0700
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-05 03:12 +0000
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-05 14:18 -0700
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-05 23:42 +0000
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-06 14:41 -0400
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-05 03:09 +0000
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-05 10:40 -0400
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-05 11:06 -0400
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-05 19:16 -0700
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-05 14:26 -0700
Re: really fast buffers George Herold <gherold@teachspin.com> - 2018-10-05 18:36 -0700
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-05 19:22 -0700
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-06 02:28 +0000
Re: really fast buffers <698839253X6D445TD@nospam.org> - 2018-10-06 06:03 +0000
Re: really fast buffers Steve Wilson <9fe142ac@gmail.com> - 2018-10-05 23:41 -0700
Re: really fast buffers <698839253X6D445TD@nospam.org> - 2018-10-06 08:12 +0000
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-06 14:46 -0400
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-06 19:03 +0000
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-06 15:32 -0400
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-06 20:08 +0000
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-06 22:19 +0200
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-06 21:02 +0000
Re: really fast buffers tabbypurr@gmail.com - 2018-10-06 16:57 -0700
Re: really fast buffers krw@notreal.com - 2018-10-06 22:30 -0400
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-07 04:30 +0200
Re: really fast buffers <698839253X6D445TD@nospam.org> - 2018-10-07 07:15 +0000
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-07 08:24 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-07 18:51 -0700
Re: really fast buffers tabbypurr@gmail.com - 2018-10-08 08:16 -0700
Re: really fast buffers Winfield Hill <hill@rowland.harvard.edu> - 2018-10-07 07:19 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-10 00:38 -0700
Re: really fast buffers tabbypurr@gmail.com - 2018-10-10 03:02 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-10 04:07 -0700
Re: really fast buffers DecadentLinuxUserNumeroUno@decadence.org - 2018-10-10 11:28 +0000
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-11 22:06 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-12 00:08 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-13 22:29 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-14 00:30 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-15 19:38 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-15 20:55 -0700
Re: really fast buffers tabbypurr@gmail.com - 2018-10-14 04:31 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-14 07:29 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-15 19:42 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-15 20:57 -0700
Re: really fast buffers tabbypurr@gmail.com - 2018-10-16 08:41 -0700
Re: really fast buffers krw@notreal.com - 2018-10-16 17:38 -0400
Re: really fast buffers bill.sloman@ieee.org - 2018-10-16 19:37 -0700
Re: really fast buffers bill.sloman@ieee.org - 2018-10-16 19:40 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-15 19:40 -0700
Re: really fast buffers Robert Baer <robertbaer@localnet.com> - 2018-10-11 22:04 -0700
Re: really fast buffers tabbypurr@gmail.com - 2018-10-12 08:02 -0700
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-10 14:06 +0200
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-10 08:31 -0700
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-11 01:49 +0200
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-10 17:41 -0700
Re: really fast buffers "John Miles, KE5FX" <jmiles@gmail.com> - 2018-10-10 20:53 -0700
Re: really fast buffers Jasen Betts <jasen@xnet.co.nz> - 2018-10-11 05:47 +0000
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-11 12:35 +0200
Re: really fast buffers George Herold <gherold@teachspin.com> - 2018-10-06 12:39 -0700
Re: really fast buffers Steve Wilson <no@spam.com> - 2018-10-06 20:11 +0000
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-08 20:26 -0700
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-06 14:45 -0400
Re: really fast buffers George Herold <gherold@teachspin.com> - 2018-10-06 12:46 -0700
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-08 21:00 -0700
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-09 07:11 +0200
Re: really fast buffers Chris Jones <lugnut808@spam.yahoo.com> - 2018-10-09 23:20 +1100
Re: really fast buffers Jeroen Belleman <jeroen@nospam.please> - 2018-10-09 15:17 +0200
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-04 09:18 -0700
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-04 12:39 -0400
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-04 11:51 -0700
Re: really fast buffers Piotr Wyderski <peter.pan@neverland.mil> - 2018-10-08 13:19 +0200
Re: really fast buffers John Larkin <jjlarkin@highlandtechnology.com> - 2018-10-08 08:52 -0700
Re: really fast buffers whit3rd <whit3rd@gmail.com> - 2018-10-04 11:57 -0700
Re: really fast buffers David Nadlinger <david@klickverbot.at> - 2018-10-04 23:05 +0100
Re: really fast buffers John Larkin <jjlarkin@highland_snip_technology.com> - 2018-10-04 17:23 -0700
Re: really fast buffers Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2018-10-05 11:26 +0200
Re: really fast buffers Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-05 10:44 -0400
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