how to amplification the MCP4261 current

Thread Starter

LAOADAM

Joined Nov 21, 2018
166
Used a MCP4261 to generate a signal to control a analog joystick, seems its max current is too small, anyway can amplification it's signal?
Thanks.
 

ArakelTheDragon

Joined Nov 18, 2016
1,327
The amplification would have to be double sided. Amplify on send, amplify on receive. Are you sure its the current? Maybe its the voltage, coding of the signal, connector or something else?
 

Thread Starter

LAOADAM

Joined Nov 21, 2018
166
The amplification would have to be double sided. Amplify on send, amplify on receive. Are you sure its the current? Maybe its the voltage, coding of the signal, connector or something else?
here are the circuit and code, the pin6 and pin9 output wrong, p6 = 2.5 V. p9: 0-5V vary, why?

post-73.JPG

don't know how to upload the code.
 

ArakelTheDragon

Joined Nov 18, 2016
1,327
I don't see pin 6 and pin 9 to be connected to anything. First if you are using Proteus always connect the pins. Second if you are using Proteus, they have a separate digital pull up resistor and digital pull down resistor, you can not use a normal one. Third, did you check the datasheet, if the voltage is floating that means there is no pull-up or pull-down resistor connected.
 
Top