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Video amplifier IC

Started by Bitrex January 15, 2012
I'm trying to remember the name of a video amplifier IC - it's an old
Motorola chip and I recall that the internal circuit was basically a
common emitter feedback triple with a pin for external compensation.  MC????
On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex
<bitrex@de.lete.earthlink.net> wrote:

>I'm trying to remember the name of a video amplifier IC - it's an old >Motorola chip and I recall that the internal circuit was basically a >common emitter feedback triple with a pin for external compensation. MC????
uA733? John
On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex
<bitrex@de.lete.earthlink.net> wrote:

>I'm trying to remember the name of a video amplifier IC - it's an old >Motorola chip and I recall that the internal circuit was basically a >common emitter feedback triple with a pin for external compensation. MC????
Possibly this one of mine... http://www.analog-innovations.com/SED/MC1552-DataSheet.pdf ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:

> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex > <bitrex@de.lete.earthlink.net> wrote: > >>I'm trying to remember the name of a video amplifier IC - it's an old >>Motorola chip and I recall that the internal circuit was basically a >>common emitter feedback triple with a pin for external compensation. >>MC???? > > uA733? > > John
Good guess! The 592 has separate input emitter current sources so you can add a cap to differentiate or to handle large input offset voltages: http://www.gs.ru/soft/si/ss1tv/NE592.pdf Mike
On 1/15/2012 2:04 PM, John Larkin wrote:
> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex > <bitrex@de.lete.earthlink.net> wrote: > >> I'm trying to remember the name of a video amplifier IC - it's an old >> Motorola chip and I recall that the internal circuit was basically a >> common emitter feedback triple with a pin for external compensation. MC???? > > uA733? > > John >
Thanks, but I don't think that's it. The one I'm trying to remember had a bigger bandwidth (~50 mHz IIRC) and was single ended all the way through.
On 1/15/2012 2:10 PM, Jim Thompson wrote:
> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex > <bitrex@de.lete.earthlink.net> wrote: > >> I'm trying to remember the name of a video amplifier IC - it's an old >> Motorola chip and I recall that the internal circuit was basically a >> common emitter feedback triple with a pin for external compensation. MC???? > > Possibly this one of mine... > > http://www.analog-innovations.com/SED/MC1552-DataSheet.pdf > > ...Jim Thompson
That's the one!
On Sun, 15 Jan 2012 19:11:08 GMT, Mike <spam@me.not> wrote:


> >> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex >> <bitrex@de.lete.earthlink.net> wrote: >> >>>I'm trying to remember the name of a video amplifier IC - it's an old >>>Motorola chip and I recall that the internal circuit was basically a >>>common emitter feedback triple with a pin for external compensation. >>>MC???? >> >> uA733? >>
> >Good guess! The 592 has separate input emitter current sources so you can >add a cap to differentiate or to handle large input offset voltages: > >http://www.gs.ru/soft/si/ss1tv/NE592.pdf > >Mike
That's NOT a feedback triple as Bitrex asked. This is... http://www.analog-innovations.com/SED/MC1552-DataSheet.pdf ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On Sun, 15 Jan 2012 14:12:42 -0500, Bitrex
<bitrex@de.lete.earthlink.net> wrote:

>On 1/15/2012 2:10 PM, Jim Thompson wrote: >> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex >> <bitrex@de.lete.earthlink.net> wrote: >> >>> I'm trying to remember the name of a video amplifier IC - it's an old >>> Motorola chip and I recall that the internal circuit was basically a >>> common emitter feedback triple with a pin for external compensation. MC???? >> >> Possibly this one of mine... >> >> http://www.analog-innovations.com/SED/MC1552-DataSheet.pdf >> >> ...Jim Thompson > >That's the one!
It was easy for me to remember. I always thought that DC Q-point scheme of mine was rather elegant ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Bitrex wrote:
> > I'm trying to remember the name of a video amplifier IC - it's an old > Motorola chip and I recall that the internal circuit was basically a > common emitter feedback triple with a pin for external compensation. MC????
MC733, maybe? The NE592 was similar but would work down to lower gain. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
On 1/15/2012 2:15 PM, Jim Thompson wrote:
> On Sun, 15 Jan 2012 14:12:42 -0500, Bitrex > <bitrex@de.lete.earthlink.net> wrote: > >> On 1/15/2012 2:10 PM, Jim Thompson wrote: >>> On Sun, 15 Jan 2012 13:57:08 -0500, Bitrex >>> <bitrex@de.lete.earthlink.net> wrote: >>> >>>> I'm trying to remember the name of a video amplifier IC - it's an old >>>> Motorola chip and I recall that the internal circuit was basically a >>>> common emitter feedback triple with a pin for external compensation. MC???? >>> >>> Possibly this one of mine... >>> >>> http://www.analog-innovations.com/SED/MC1552-DataSheet.pdf >>> >>> ...Jim Thompson >> >> That's the one! > > It was easy for me to remember. I always thought that DC Q-point > scheme of mine was rather elegant ;-) > > ...Jim Thompson
I was thinking of that configuration today for some reason but I couldn't remember the name or where I saw it - I recall now. It was in a YouTube video on analog IC design...there's actually an analysis of it here at 39 minutes in. http://youtu.be/1g50dJ4vCh8