MPY634

WILLIE MCCAIN1

Intellectual 380 points

Other Parts Discussed in Thread: MPY634

HELLO THIS IS HOT

I NEED TO NO IF THE PIN OUT IN THE DRAWING IS CORRECT

WHAT I NEED TO NO IS THAT IF I HAVE A SINE WAVE FEF. ON THE X (+) INPUT AND THE NEG. INPUT TO GROUND .

VOUT OF THE PART IS TIED TO Z1 AND Z2 WILL BE MY SUMMING NODE FOR CURRENT SENSE SIGNAL.

NOW I HAVE FROM THE OUTPUT OF THE INVERTER A SENSE NETWORK AND A POT THAT I WILL USE TO ADJ. THE OUTPUT VOLTAGE THIS VOLTAGE WILL GO INTO THE Y(-) INPUT AND THE (+) IS GOING TO GROUND .

NOW WHAT I NEED TO HAPPEN IS

AS THE FEEDBACK SIGNAL ON THE Y(-) INPUT BECOMES GREATER THAN THE SINE REF THE OUTPUT SINEWAVE WILL START TO DECREASE

AND AS I ADJ ARE TURN R3 ON THE DRAWING I CAN MOVE THE SET OUTPUT VOLTAGE UP AND DOWN AND ONCE I HAVE THE OUTPUT CORRECT I START TO LOAD THE OUTPUT OF THE INVERTER AND YOU SHOULD SEE THE OUTPUT FROM THE MPY634 INCREASES TO TRY AND MATCH THE SIGNAL OF THE FEEDBACK TO IT MAINTANS REGULATION

LET ME NO ARE UPDATE THE DRAWING AND SEND IT BACK TO ME AND I WILL MAKE THE CHANGES HERE.................

SO THE MAIN IDEA HERE IS THE REF SIGNAL ON THE X INPUT IS CONSTANT IN AMPLTD. SO I NEED TOHAVE THE SAME AT THE OUTPUT OF THE MPY634 AND WHEN I APPLY A FEEDBACK SIGNAL THE V OUT SIGNAL SHOULD DECREASE AS MY FEED BACK SENSE SIGNAL BECOMES GREATER THAN THE REF SIGNAL

GET BACK PLEASE ASAP

THIS IS HOT

over 8 years ago

0 Praveen Aroul over 8 years ago

TI__Mastermind 49176 points

Hello Willie,

I am moving your post to Precision Amplifiers forum that handles queries related to this device.

0 Thomas Kuehl over 8 years ago

TI__Guru* 93105 points

Hi Willie,

Which drawing are you referring to in regard to the pin out? Would it be possible for you to indicate exactly how you are applying the MPY634 (multiplier, divider, etc.), provide a schematic of your MPY634 circuit, and provide details about supply voltages, the input signal, expected output, etc.

Having details about your application will help us to better understand what it is you are attempting to accomplish with the MPY634.

Regards, Thomas

PA - Linear Applications Engineering

0 WILLIE MCCAIN1 over 8 years ago in reply to Thomas Kuehl

Intellectual 380 points

THE SINE WAVE IS AT 2V PK-PK AND THE FREQ IS 50 HZ TO 2 KHZ AND SUPPLY VOLTAGE ARE 15 VOLTS
WITH NO FDBK I NEED 2 VOLTS AT OUTRPUT AND WHEN I HAVE FEEDBACK WHEN I GO OVER THE 2 VOLT REF
THE OUTPUT STARTS TO DECREASE

0 Marek Lis over 8 years ago in reply to WILLIE MCCAIN1

TI__Guru 60570 points

Willie,
Picture is worth thousand words; we cannot help you without seeing schematic showing details of your application.

0 WILLIE MCCAIN1 over 8 years ago

Intellectual 380 points

HELLO PRAVEEN CAN YOU SEND THIS TO AMY IN THE MEDICAL SECTION LOOK AT MY LAST POST SHE WAS THE ONE WHO GOT BACK TO ME
LET HERE NO ITS A DRAWING ATTACHED MUCH CLEAR LET HER NO I NEED HER TO LOOK AT THE PINS AND LET ME NO IF THEY ARE CORRECT THAN I WILL DO A SCHEMATIC DRAWING WITH THE PART PLACED FOR HER TO LOOK AT

THANKS,
WILLIE