[time-nuts] RF transformers for distribution amplifier

[Yuri Ostry]

Hello,

Just digged in my junkbox(es) in hope to find something to quickly
build distribution amp for Rb module that I just received from
fluke.l. Figured out that I'm pretty short in fast opamps, but found
considerable quantity of Mini-Circuits TC1-6-75-1 SMT wideband
transformers (same as sold now by someone on eBay for US $17.49 for
lot of 200 as item #110259000213).

Here is some more detailed specs that good people from Mini-Circuits
provided a year or so ago....

> The P/N TC1-6-75-1 is a Mini-Circuits custom design for one of our
> cust's. However, this model was made available for other customers
> as well.
>
> The specs are as follow:
> Frequency:  5 - 50 MHz
> Impedance ratio:  1:1
> Impedance:  75 ohms nominal
> Insertion Loss:  0.5 dB maximum
> Input Return Loss:  14 dB typical
> Maximum RF Input Power:  15 mW
> Operating temperature:  0 to 70 degrees C
> 
> All electrical specs measured with 0 mA DC current
> 
> Case style:  AT224
> Pinout:  (same as TC1-1)
> Primary dot = pin 6
> Primary = pin 4
> Secondary dot = pin 1
> Secondary = pin 3
> Not used = pin 2


I'm in doubt... I'd like to get about 1 volt p-p on a 50 ohm load from
amplifier outputs, and it looks like that this transformer may be
"overdriven" a little bit. Can it cause any serious problems?



-- 
Sincerely,
 Yuri                          mailto:yuri at ostry.ru