Op Amps

Op Amps, short for Operational Amplifiers, are semiconductor devices commonly used in analogue electronic circuits. They work by receiving an input signal and amplifying it into a stronger output signal. Op Amps offer a very high voltage gain amplifiers.

How do Op Amps work?
Op Amps provide mathematical operations such as addition, multiplication, differentiation, and integration. They are voltage amplifiers which usually have a differential input and a single-ended output.
There are two inputs into an Operational Amplifier which are called inverting (-) and non-inverting (+) inputs. If you were to increase the voltage to the inverting input, the output voltage decreases. Alternatively, if you increase the voltage to the non-inverting input, the output voltage increases. If an equal voltage is supplied to both inputs, the output will not change.

What is a differential amplifier?
Op Amps are often referred to as differential amplifiers. This is because the output of an Op-Amp is relative to the difference between the input voltages.

Where are Op Amps used?
Operational amplifiers have a wide variety of uses in electronic circuits. Here are some examples of how they are used:

Crystal oscillators and waveform generators
Audio- and video-frequency pre-amplifiers and buffers
Integrators
Comparators
Analogue-to-digital (ADC) and digital-to-analogue (DAC) converters
Voltage Clamps
Analogue Calculators
Filters
Differentiators
Precision rectifiers
Linear voltage regulators
Current regulators
Precision rectifiers
Precision peak to peak detectors

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Description Price Amplifier Type Mounting Type Package Type Power Supply Type Number of Channels per Chip Pin Count Typical Single Supply Voltage Typical Gain Bandwidth Product Output Type Typical Dual Supply Voltage Typical Slew Rate Maximum Operating Frequency Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 195-357
Mfr. Part No.OP275GSZ
HK$21.38
Each
units
- Surface Mount SOIC Dual 2 8 - 9MHz - ±12 V, ±15 V, ±18 V, ±5 V, ±9 V 22V/µs - +85 °C -40 °C
RS Stock No. 379-2538
Mfr. Part No.MCP601-I/P
BrandMicrochip
HK$4.17
Each (In a Pack of 5)
units
General Purpose Through Hole PDIP Single 1 8 3 V, 5 V 2.8MHz - - 2.3V/µs - +85 °C -40 °C
RS Stock No. 111-1181
Mfr. Part No.OP284ESZ
HK$67.705
Each (In a Tube of 98)
units
- Surface Mount SOIC Dual, Single 2 8 5 → 28 V 3.25MHz - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 2.4V/µs - +125 °C -40 °C
RS Stock No. 162-4202
Mfr. Part No.LM318P
HK$7.657
Each (In a Tube of 50)
units
- Through Hole PDIP Dual 1 8 - 15MHz - ±12 V, ±15 V, ±18 V, ±9 V 70V/µs - +70 °C 0 °C
RS Stock No. 121-8703
Mfr. Part No.LM324N/NOPB
HK$4.577
Each (In a Tube of 25)
units
Precision Through Hole MDIP Dual, Single 4 14 5 → 28 V 1MHz - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 0.5V/µs - +70 °C 0 °C
RS Stock No. 506-1599
Mfr. Part No.LTC2054CS5#TRMPBF
HK$20.002
Each (In a Pack of 5)
units
- Surface Mount TSOT-23 Single 1 5 3 V, 5 V 500kHz - - 0.5V/µs - +70 °C 0 °C
RS Stock No. 535-9969
Mfr. Part No.LM741CN/NOPB
HK$6.178
Each (In a Pack of 5)
units
- Through Hole MDIP Dual 1 8 - 1MHz - ±12 V, ±15 V, ±9 V 0.5V/µs - +70 °C 0 °C
RS Stock No. 379-2572
Mfr. Part No.MCP602-I/P
BrandMicrochip
HK$5.042
Each (In a Pack of 5)
units
General Purpose Through Hole PDIP Single 2 8 3 V, 5 V 2.8MHz - - 2.3V/µs - +85 °C -40 °C
RS Stock No. 709-3267
Mfr. Part No.OPA827AID
HK$87.69
Each
units
- Surface Mount SOIC Dual 1 8 - 22MHz - ±12 V, ±15 V, ±5 V, ±9 V 28V/µs - +125 °C -40 °C
RS Stock No. 917-3627
Mfr. Part No.LTC2054CS5#TRMPBF
HK$13.962
Each (On a Reel of 500)
units
- Surface Mount TSOT-23 Single 1 5 3 V, 5 V 500kHz - - 0.5V/µs - +70 °C 0 °C
RS Stock No. 403-036
Mfr. Part No.MCP6002-I/P
BrandMicrochip
HK$2.928
Each (In a Pack of 10)
units
General Purpose Through Hole PDIP Single 2 8 3 V, 5 V 1MHz - - 0.6V/µs - +85 °C -40 °C
RS Stock No. 302-621
Mfr. Part No.TL074CN
HK$14.54
Each
units
- Through Hole PDIP Dual 4 14 - 3MHz - ±12 V, ±15 V, ±5 V, ±9 V 13V/µs - +70 °C 0 °C
RS Stock No. 160-3353
Mfr. Part No.OP77EZ
HK$85.003
Each (In a Tube of 48)
units
Precision Through Hole CDIP Dual 1 8 - 600kHz - ±15V 0.3V/µs 1000 kHz +85 °C -25 °C
RS Stock No. 426-067
Mfr. Part No.TS321ILT
HK$3.694
Each (In a Pack of 10)
units
- Surface Mount SOT-23 Dual, Single 1 5 5 → 28 V 800kHz - ±12 V, ±3 V, ±5 V, ±9 V 0.4V/µs - +125 °C -40 °C
RS Stock No. 812-2502
Mfr. Part No.OPA1611AID
HK$41.216
Each (In a Pack of 10)
units
Precision Surface Mount SOIC Dual 1 8 - 80MHz - ±2.25 → ±18V 27V/µs 100 Hz +125 °C -55 °C
RS Stock No. 661-0530
Mfr. Part No.LM324N
HK$3.397
Each (In a Pack of 10)
units
Precision Through Hole PDIP Dual, Single 4 14 5 → 28 V 1.2MHz - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 0.5V/µs - +70 °C 0 °C
RS Stock No. 923-6835
Mfr. Part No.OPA827AID
HK$68.183
Each (In a Tube of 75)
units
- Surface Mount SOIC Dual 1 8 - 22MHz - ±12 V, ±15 V, ±5 V, ±9 V 28V/µs - +125 °C -40 °C
RS Stock No. 889-5695
Mfr. Part No.MCP602-I/P
BrandMicrochip
HK$3.943
Each (In a Tube of 60)
units
General Purpose Through Hole PDIP Single 2 8 3 V, 5 V 2.8MHz - - 2.3V/µs - +85 °C -40 °C
RS Stock No. 182-2485
Mfr. Part No.LM318P
HK$15.49
Each
units
- Through Hole PDIP Dual 1 8 - 15MHz - ±12 V, ±15 V, ±18 V, ±9 V 70V/µs - +70 °C 0 °C
RS Stock No. 913-0721
Mfr. Part No.OP275GSZ
HK$19.071
Each (In a Tube of 98)
units
- Surface Mount SOIC Dual 2 8 - 9MHz - ±12 V, ±15 V, ±18 V, ±5 V, ±9 V 22V/µs - +85 °C -40 °C
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