Syncing the ICL7660

Thread Starter

Stryker

Joined Mar 26, 2009
7
How can be synced an ICL7660 operating between gnd and +10V by a clock swinging between gnd and +5V ?

How much should be the minimum amplitude of the clock applying to the OSC input? Swinging from where to where?

I'm confused!:confused: Please clarify!

Thanks in advance
Stryker.
 

Thread Starter

Stryker

Joined Mar 26, 2009
7
The datasheet doesn't have enough explanation... Just says a rail to rail clock... it's not in detail.
 

SgtWookie

Joined Jul 17, 2007
22,201
See page 6, 1st paragraph, 2nd sentence.

Instead of a TTL IC, you could use a simple NPN transistor with a 3k base resistor and a 10k resistor from the collector to Vcc (+10v). Feed your existing clock to the other side of the 3k resistor.
 
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