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Q&A
Homepage / Q&A
Making Power Designs Easier
- Q: I want £º DC to DC Converter using Three Phase delta AC input from 100V to 200V and output of 24V at 40 amps £º pl suggest suggest suitable devices and application note
- A: Sorry, NS doesn't have a solution for three phase AC input.
- Q: how many Operating frequency adjustable is LM25575 using?
- A: The frequency range for LM25575 is 50KhZ to 1MHz
- Q: Is there any room for compromise for designs calling for both feature-rich but power-efficient products?
- A: Yes. LM20K have integrate alot of features, and it is a syncrpnous switcher for high efficiency power conversion as well.
GHz Sampling Design Challenges
- Q: ADC78H90 can be used for automotive, is there any new product which can replace it?
- A: ADC78H90 is 8 ch 12bit ADC. Beside that one, you can also choose ADC128S052 or ADC128S102 for your application.
- Q: What are the global trends in sampling designs?
- A: It depends on resolution and applications. As in 8 bit, it's in DSO or data captured or UWB. The sample rate is higher & higher. Now 6Gsps is possible. And in higher resolution like 12 or 14bit, so far mainly in communciation or medical applications, the
- Q: can these sample system be used in UWB signals£¬which frequency may be upto 6 or more GHZ?
- A: Yes. The Gig ADCs can be used in Ultra Wide Band applications. You can use 1.5Gig in Dual Edge Sampling Mode or you can use 3Gig ADC. If the input signal goes beyond 3GHz, you can use 2 nos. 3Gig ADCs in interleaved sampling mode using our programmable cl
Amplifier and ADC Performance Optimization
- Q: what is the maximum bandwidth available with National¡°s high speed amplifiers at present
- A: LMH6702 has BW of 1.7GHz. For other high speed amplifiers please see www.national.com/cat/
- Q: How do I get Ts on slide 24
- A: Ts is sampling time of the ADC.
- Q: what is n on slide 24
- A: n is the resolution of ADC
Connecting To The New DisplayPort™ Standard
- Q: Are these cables UL approved
- A: Molex DisplayPort cable assembly is UL recognised products
- Q: What is the max current for the connecter?
- A: The DP specification defines this as 0.5 A minimum. The specification does not define a maximum.
- Q: when will the Dongle and Adaptor be available in the market ?
- A: Early Production Samples and qualification volume on DP-HDMI and DP-DVI will be available in ~Jan, 2008.
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