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Line driving using 2206B AWG?

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Line driving using 2206B AWG?

Postby Squinn » Tue Mar 14, 2017 10:06 pm

Hi,

If this question can be answered by reading the technical documentation, I will take no issue with a reply of the form: "RTFM".

I currently have a circuit which uses some SN74S140's to get a logic pulse over about 150 ft of RG58 coax using 50 Ohm termination. I'd like to replace this with a 2206B which uses the AWG to send a similar pulse when a fancy advanced trigger condition is satisfied.

What kind of current can I expect out of the AWG? I know the SN74S140's are pretty nice, providing about 50 mA which is enough to get a clean signal over that distance.

If I need to buffer the AWG output, shouldn't be too difficult.

TIA,
Sean
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Re: Line driving using 2206B AWG?

Postby Hitesh » Wed Mar 15, 2017 5:52 pm

Hi Sean,

The output impedance for the AWG is 600 Ohms (this is shown in the specs).

With the maximum output voltage of +2 V, this should give you

I = 2 / 600 = 0.0033 A

Hope this helps,
Hitesh

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Re: Line driving using 2206B AWG?

Postby Squinn » Mon Mar 20, 2017 2:42 pm

Hi Hitesh,

Yup, thanks a lot. I visited the spec page after I made the post and saw 600 Ohms in the "Output characteristics" field :oops:
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