UNIT 2
OPERATIONAL AMPLIFIER
Ms.SBN
,OP - AMP (Operational Amplifier)
• Linear Integrated Circuits – number of electronic applications – audio and radio communicatio
electronics, instrumentation control, etc.
• Important linear IC – Op Amp.
• Operational Amplifier (Op-Amp) – multi terminal device – internally quite complex.
• Circuit symbol – Triangle – Two input terminals (-ve terminal – Inverting Input) and (+ve term
Inverting input) and one output terminal.
• Op-amp package – contain single, two or four op-amps.
• Widely used popular type – IC741 (single Op-amp).
• Five basic terminals – Two input, One output and two power supply terminals.
Ms.SBN
,Ms.SBN
, OP - AMP (Power Supply Connections)
• V+ and V- terminals – connected to two DC voltage sources (15V –
typical, supply voltage varies from ±5V to ±22V).
• Common terminal of V+ and V- is connected to ground, otherwise
twice the supply voltage will get applied and damaged the Op-amp.
OP - AMP (Manufacturers)
Ms.SBN
OPERATIONAL AMPLIFIER
Ms.SBN
,OP - AMP (Operational Amplifier)
• Linear Integrated Circuits – number of electronic applications – audio and radio communicatio
electronics, instrumentation control, etc.
• Important linear IC – Op Amp.
• Operational Amplifier (Op-Amp) – multi terminal device – internally quite complex.
• Circuit symbol – Triangle – Two input terminals (-ve terminal – Inverting Input) and (+ve term
Inverting input) and one output terminal.
• Op-amp package – contain single, two or four op-amps.
• Widely used popular type – IC741 (single Op-amp).
• Five basic terminals – Two input, One output and two power supply terminals.
Ms.SBN
,Ms.SBN
, OP - AMP (Power Supply Connections)
• V+ and V- terminals – connected to two DC voltage sources (15V –
typical, supply voltage varies from ±5V to ±22V).
• Common terminal of V+ and V- is connected to ground, otherwise
twice the supply voltage will get applied and damaged the Op-amp.
OP - AMP (Manufacturers)
Ms.SBN
