No its not a homework question. just for general use.
it doesn't mater what the rail voltages are i just want a general equation for the common mode input range for a pmos diff pair
if it were a nmos diff pair then the eq's would be
Vin_min = Vds(n6) + Vgs(n1)
Vin_max = Vaa + Vgs(p3) -...
Hi
Can someone help me on how i can calculate the input common mode range for this pmos diff pair. I'd have an idea if it was an NMOS diff pair but am kinda uncertain of this.
I'm looking for equations for the input signal ranges of Vmax and Vmin
Thanks
Hi All
i am thinking of using an LM317 to deliver a constant current (CC) of aprox 1A to li-ion batteries for charging. but as you may know it is then recommended to then apply a constant voltage (CV) once the constant current section has made the battery voltage 4.2V per cell. the constant...
Hi
I need to take in a number of analog voltages onto an ADC but the ADC is a single input. I was thinking of putting the voltages through a MUX and then selecting the input desired to go to the output of the MUX and onto the ADC.
Does anyone know of good analog MUX's/Switches that will...
the basic idea was to use a microcontroller to perform calculation with these voltages. The voltages need to be digital going into the microcontroller therefore the use of the ADC.
Is a voltage divider the best way of performing a sort of step down ratio? Its needs to be power efficient. The...
Hi All
I am wondering does anyone know the voltage limits of standard mux such as 74151A.
I aim to place diferent voltage levels into the mux and select one input as the output that will go to an ADC. The voltages will be of increasing values i.e 4V, 8V, 12V 16V etc. Is 16 Volts too much to...
Hi
I need help designing a constant current constand voltage charger for li-ion batteries.
Anyone have any help?
Whats the best method of constant current. It will be high current over 1 Amps
Thanks