Rbe over temperature?

[Grant Richter]

The design uses an SSM2220, which is basically an F grade MAT-03.

How much dVbe mis-match is tolerable?


> From: "Ian Fritz" <ijfritz at earthlink.net>
> Reply-To: ijfritz at earthlink.net
> Date: Mon, 15 Jan 2001 09:43:41 -0700
> To: "Terry Michaels" <104065.2340 at compuserve.com>, <grichter at asapnet.net>,
> "synth" <synth-diy at node12b53.a2000.nl>
> Subject: Re: Rbe over temperature?
> 
> Terry --
> 
> Ooops, Terry, not right. Remember that the scaling factor includes a
> multiple of dVbe. There is no temperature dependence at the point where the
> two Vbe's are the same, and opposite tempco signs (increasing in magnitude
> as the magnitude of dVbe increases) on either side.
> 
> Ian
> 
> ----- Original Message -----
> From: "Terry Michaels" <104065.2340 at compuserve.com>
> 
>> Also, it can't be because
>> of the difference between 3300 and 3500 ppm, that is a scale factor issue,
>> so if that was the cause you would see an incorrect scale factor setting
> at
>> all pitch ranges, not just at C7.
> 
> 
> 
>