Hi It may be a language issue, but the datasheet does not present this amplifier very well. I wondered about the specification for squarewave input "TTL 3.3V" TTL is 5V. What is the slew rate of the amplifier? It's specified to 50MHz, will it accurately reproduce a 50MHz square wave? A 1V RMS output is not going to reproduce a TTL 1PPS or 10MHz clock very well. It does state that each output is isolated and buffered. It reads as a general purpose wideband amplifier rather than one optimised for a particular timing application. Robert G8RPI
________________________________ From: Charles P. Steinmetz <charles_steinm...@lavabit.com> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Thursday, 6 September 2012, 20:54 Subject: Re: [time-nuts] REF osc distribution. Luc wrote: > We have a product that have been specially design for these : NGA-DIS Thank you for the link. The data sheet raises a few questions: The sine wave input level is specified as "1Vrms nominal 0.5V Peak to peak." Of course, 1Vrms is ~2.8Vp-p. It is not clear what this specification means. Gain and noise are not specified, nor is isolation from output to input or from the outputs to each other. These are parameters that many buyers will want to know. Have you characterized the NGA-DIS for phase noise? That is also a parameter many buyers will want to know. Does each output have its own output amplifier, or does one amplifier drive multiple outputs through individual build-out resistors? Does the NGA-DIS use op amps, or discrete circuitry? What is the price? Best regards, Charles _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
