Have to dig into the details, but I could see it. I've driven VFD filaments 
from the much older LM1877, before National got swallowed up by TI. Its a 
stereo amp, which I rigged in a "bi-phase" configuration, much like the 
LM4871. All these parts belonged to National. I wonder if that employee was 
a National employee, and came along with the acquisition ?  

On Thursday, October 30, 2014 12:36:48 AM UTC-7, Dekatron42 wrote:
>
> I found this comment over at Texas instruments forum:
>
> "The LM9022 (VFD Filament Driver) was a marketing spin of the LM4871 
> <http://www.ti.com/product/LM4871> (3W Audio Power Amplifier)
>
> http://www.ti.com/product/lm4871";
>
> http://e2e.ti.com/support/power_management/isolated_controllers/f/188/p/289255/1009125.aspx#1009125
>
> Does anyone here at the forum know if this is a substitute for the LM9022, 
> it was a Ti employee who wrote that comment (check the forum thread).
>
> /Martin
>
> On Saturday, 11 October 2014 20:01:35 UTC+2, Sgitheach wrote:
>>
>> Hi 
>>
>> The LM9022 IC which is a fairly niffty VFD driver has turned up on ebay 
>> item 171472657676 
>>
>> No affiliation. 
>>
>> Grahame 
>>
>>

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