Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
open contact impedance is 150-160 kohm.
closed contact impedance is 50-80 ohm (@ Vcc 12v - 6v).
Reason for my problem is the control voltage level.
@ Vcc above 11.8 Volt -> Logic High must be higher than 3.4 volt.
@ Vcc below 11.8 Volt -> Logic High can be 3.3 Volt.
Seems the contacts are in...
V+ = 12 volt
V- = GND
INH = GND
Logic high = 3,3 Volt
Logic Low = 0 Volt.
Everything ok when tested at Vcc = 6-11,8 Volt.
Above 11,8 i see input on port 0 also on port 1 e.g.
I'm using a MAX4051 ACPE+ in single supply mode.
V- is connected to ground.
According to datasheet max Vcc is 16 volt.
however around 11,8 volt, it seems that some of the switches not close anymore.
Belov 11.8v Vcc it works like it should.
I see the same thing on 2 pcs.
any ideas why this...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
