Linear Technology LT1166
Linear Technology LT1166
(OP)
Does anyone know where I can buy an audio amplifier that uses a Linear Technology LT1166 Bias IC?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: Linear Technology LT1166
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Linear Technology LT1166
http://www.linear.com/product/LT1166#orderinfo
http://www.linear.com/purchase/
The problem may be that you don't have a part number, you have a series number. One part number is available from Digikey:
https://www.digikey.com/product-detail/en/linear-t...
You can see the available part numbers in the linear orderinfo page.
RE: Linear Technology LT1166
2) The harmonic distortion is based on the reference circuits. They are not very sophisticated.
3) The LT1166 is a bias current IC. This is not easy to do by other means.
4) Especially if you are putting out tens of kilowatts to drive a US Navy Active Sonar based on
Terfenol-D with Analog FETs. And the spec does not allow crossover distortion when the water
to the water cooled heat sink fails due to battle damage.
RE: Linear Technology LT1166
Otherwise that's not an easy answer. Maybe find an audio enthusiast blog?
RE: Linear Technology LT1166
RE: Linear Technology LT1166
Why wouldn't you be using a class D amplifier?
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Linear Technology LT1166
RE: Linear Technology LT1166
Keep in mind that you're going to need filtering and shielding in spades anyway to keep the kHz (?) sonar signal itself (meaning the conducted and radiated EMI emissions from the system and its wiring) in check anyway. MHz switching noise is probably easier to filter and shield than your kHz primary signal with 'tens of kilowatts'.
Plus, the system is likely to require a massive power supply, which would presumably be switching (as opposed to linear) these days. So there's going to be some switching I'd think.
If the amplifier can be installed next to the transducer, in the depths of a Navy ship, then it should be easy to keep the EMI in check.
Just some thoughts in case they help. Cheers.
PS: I did use my best Google-Fu on your original post, but found nothing.
RE: Linear Technology LT1166
http://www.ebay.com/itm/Linear-Technology-Lt1166Cs...
RE: Linear Technology LT1166
This is not true, in general. The motors in the modern submarines are commutating megawatts of power, and couldn't even begin to be efficient if the drivers were class AB.
Moreover, even if you used a class AB, you'd still be running as digital, as there is no plausible operational requirement to halfway between the rails during operation, and under normal operation, being in the middle costs a truckload of inefficiency, which a military system can ill afford.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Linear Technology LT1166
RE: Linear Technology LT1166
RE: Linear Technology LT1166
Requirements trump the laws of physics, of course...
Figure 14 of the datasheet shows you how to scale up their topology to handle higher powers. Hypothetically, 30 "slices" would get you about 9 kW. However, at that point, you might need a slice to buffer the front end as well.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Linear Technology LT1166