Hi
>From what little I can find, the oscillator is specified as a sine wave
output into a 1K ohm resistive load. The supply voltage shows up as 8 volts
and as 9.6 volts. I have seen other oscillators specified as high as 10K ohm
resistive load, so 1K isn't as crazy as it might first sound.
Back 30 years ago (Motorola was a while back) the intention was that the
oscillator would be run into a tuned tank. They all went into radios, and
things like radio spurs from oscillator harmonics were a concern.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Joe McElvenney
Sent: Monday, February 01, 2010 9:09 AM
To: Time Nuts Digest
Subject: [time-nuts] Info Needed on MOT KX1516AA VC-TCXO
Hi,
I have some Motorola K1516AA, 10MHz, VC-TXCO devices (date-coded 1988)
but with only a basic pin-out diagram to their name and am wondering if
anyone knows a little more about them. Specifically I'm concerned with
the apparent high output-Z which means that a sniff of 'C' or a tad of
loading drags down the output to a fraction of the off-load value.
Unless they were made for a very specific purpose, this characteristic
would seem to me as pointless. Also, by measurement and experimentation,
I'm fairly sure that they don't use an open collector or emitter
follower output port. They may work as a current source but I haven't
gone that route as yet.
TIA - Joe G3LLV
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