Adding uncorrelated (i.e. white) noise to an analog signal prior to digitization. It has 2 noise circuits and the adc circuit with a pic24 microcontroller

PDIP-8_N LT1028CN8ND Analog Devices Inc. Linear Technology \nGeneral Purpose Amplifier 1 Circuit - 8-PDIP\n Copyright C 2016 Accelerated Designs. All rights reserved PDIP-8 Linear Technology None https://www.snapeda.com/parts/LT1028CN8/Analog+Devices/view-part/?ref=eda https://www.snapeda.com/parts/LT1028CN8/Analog+Devices/view-part/?ref=snap