Forward voltage maximum of bandgap diode?

[Nick]

Can anyone tell me the forward voltage (maximum) that a bandgap micropower
shunt voltage reference can sustain eg an LM4040 - 4.096v ?
The data sheets make no reference to this parameter.
Thanks
Nick

 

[Spehro Pefhany]

On Tue, 13 Sep 2005 10:14:25 -0000, the renowned "Nick"
<nmr@iwoot.com> wrote:

Can anyone tell me the forward voltage (maximum) that a bandgap micropower
shunt voltage reference can sustain eg an LM4040 - 4.096v ?
The data sheets make no reference to this parameter.
Thanks
Nick

It's not specified. I would expect it to look like a silicon diode.
The absolute maximum 'forward' current is 10mA.

Note the parasitic die attach Schottky diode (also unspecified) which
is connected to the "NC" pin. Connecting this to the 'cathode' might
alter the 'forward' characteristics (as opposed to leaving it
floating).


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Nick]

It's not specified. I would expect it to look like a silicon diode.
The absolute maximum 'forward' current is 10mA.

Note the parasitic die attach Schottky diode (also unspecified) which
is connected to the "NC" pin. Connecting this to the 'cathode' might
alter the 'forward' characteristics (as opposed to leaving it
floating).

Thanks for your reply Spehro.
Nick