ECE 2799 Electrical and Computer Engineering Design “ANALOG PROCESSING TECHNIQUES” Prof. Bitar

S. J. Bitar Analog vs. Digital Analog Analog Continuous Signals Continuous Signals Signal Processing Using Operational Amplifiers Signal Processing Using Operational Amplifiers Digital Digital Discrete Values A/D and D/A Converters Signal Processing Using Microprocessors/ Microcontrollers

S. J. Bitar Op-Amp Signal Processing Applications Linear Operations Linear Operations Scalar Multiplication Scalar Multiplication Addition Addition Subtraction Subtraction Integration Integration Differentiation Differentiation Filtering Filtering Non-Linear Operations Non-Linear Operations Comparator Schmitt Trigger

S. J. Bitar Scalar Multiplication Amplification (Non-Inverting) A VinVout

S. J. Bitar Scalar Multiplication Amplification (Inverting) - A VinVout

S. J. Bitar Scalar Multiplication Attenuation (Reduction) A VinVout

S. J. Bitar Signal Addition (Passive) Σ Vin1 Vin2 A ( If R1 = R2 )

S. J. Bitar Signal Addition Inverting Summer (Mixer) Σ Vin1 Vin3 -A Vin2

S. J. Bitar Signal Subtraction Difference Amplifier +-+- Vin1 A Vin2

S. J. Bitar Signal Subtraction Instrumentation Amplifier +-+- Vin1 A Vin2

S. J. Bitar Integration

Differentiation

Filter Applications Low Pass Filter (LPF) Low Pass Filter (LPF) High Pass Filter (HPF) High Pass Filter (HPF) Band Pass Filter (BPF) Band Pass Filter (BPF)

S. J. Bitar Low Pass Filter (LPF)

S. J. Bitar High Pass Filter (HPF)

S. J. Bitar Band Pass Filter (BPF)

S. J. Bitar Non-Linear Op-Amp Applications Comparator Comparator Schmitt Trigger Schmitt Trigger

S. J. Bitar Voltage Comparator If Vin > Vref then Vout = +Vsat If Vin < Vref then Vout = -Vsat

S. J. Bitar Schmitt Trigger Inverting Type (Note Positive Feedback!)

S. J. Bitar Schmitt Trigger Non-Inverting Type (Note Positive Feedback!) Note Signs!