[time-nuts] Achieving maximum performance when driving 5370A/B inputs
bruce.griffiths at xtra.co.nz
Mon Mar 1 04:53:34 UTC 2010
You could substitute a 74AHC04 which has better control of ground and
At least they are specified.
At least a 3dB attenuator with a 5370B.
at least 11dB with a 5370A.
Or just use the built in 20dB (10x) attenuator.
Dave hartzell wrote:
> Thanks for the tips Bruce.
> Is there a "better" version of the 74AC04? It sounds like I should also
> use an attenuator, perhaps 3 - 10 dB...
> On Sun, Feb 28, 2010 at 7:43 PM, Bruce Griffiths<bruce.griffiths at xtra.co.nz
>> The TADD-2 output drivers exhibit significant ringing and crosstalk due to
>> ground and Vcc bounce.
>> To minimise crosstalk dedicate each 74AC04 output device to a single
>> frequency and load.
>> Because of the ringing setting the trigger threshold is more critical than
>> No damage occurs when driving the 5370A/B 1x inputs with 5V logic levels
>> however various protection diodes will turn on and the preamp input stage
>> becomes nonlinear.
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