cancel
Showing results for 
Search instead for 
Did you mean: 

PSoC 4 MCU

Anonymous
Not applicable

Hi,

can anybody help me figure out how to configure UAB as Mixer. In TRM it says it's possible and that's it.

I know it's all in changing registers, but I'm having problems as I don't know how to implement Mixer using

those components by comparing them to schematics I found on internet.

I'm using PSoC Analog Coprocessor (CY8CKIT-048),

You can see UAB structure on attached picture.

Source (TRM): http://www.cypress.com/file/273431/download (page 201)

uab.png

0 Likes
1 Solution
DineshbabuM_66
Employee

Hi,

Attached is the sample project for Downmixer.  This project uses UAB based custom Component.  PSoC Creator 3.3 CP3 (link below) to be used for testing the project.

http://www.cypress.com/documentation/software-and-drivers/psoc-creator-software-archive

Thanks,

Dinesh

View solution in original post

2 Replies
DineshbabuM_66
Employee

Hi,

Attached is the sample project for Downmixer.  This project uses UAB based custom Component.  PSoC Creator 3.3 CP3 (link below) to be used for testing the project.

http://www.cypress.com/documentation/software-and-drivers/psoc-creator-software-archive

Thanks,

Dinesh

View solution in original post

odissey1
Honored Contributor II

kristijan,

This is schematic of a simple BPSK modulator / demodulator assembled from a simple Opamp or PGA with G=1. To perform correctly, the input signal needs to be centered across virtual analog ground (typically VDDA/2), then the output is also centered around it. When AMux switch is closed, the Modulator gain is -1, and when it is open the gain is +1. The AMux switch needs to be connected to the Virtual GND or simply to a capacitor (which will automatically average around the middle of the input signal). Such circuit can perform both like modulator or demodulator.

You can find detailed explanation of the modulator circuit operation here (approx at 14:00):

Single Supply Precision Rectifier Design and Optimization - YouTube

/odissey1

BPSK_Analog Modulator_01.png