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. 305-311
Mfr. Part No.UA741CP
HK$4.47
Each (In a Pack of 5)
units
- Through Hole PDIP Dual 1 8 - 1MHz - ±12 V, ±15 V, ±5 V, ±9 V 0.5V/µs - +70 °C 0 °C
RS Stock No. 661-0521
Mfr. Part No.LM324D
HK$2.593
Each (In a Pack of 10)
units
Precision Surface Mount SOIC 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. 860-7545
Mfr. Part No.TSH82IYDT
HK$8.872
Each (In a Pack of 5)
units
High Speed Surface Mount SOIC Single 2 8 4.5 → 12 V 100MHz - - 100V/µs - +85 °C -40 °C
RS Stock No. 461-9030
Mfr. Part No.OPA637AU
HK$212.81
Each
units
- Surface Mount SOIC Dual 1 8 - 80MHz - ±15V 135V/µs - +85 °C -25 °C
RS Stock No. 436-3052
Mfr. Part No.OPA2277UA
HK$34.89
Each
units
Precision Surface Mount SOIC Dual 2 8 - 1MHz - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 0.8V/µs - +85 °C -40 °C
RS Stock No. 100-3835
Mfr. Part No.OPA2277UA
HK$32.942
Each (In a Tube of 75)
units
Precision Surface Mount SOIC Dual 2 8 - 1MHz - ±12 V, ±15 V, ±3 V, ±5 V, ±9 V 0.8V/µs - +85 °C -40 °C
RS Stock No. 106-7059
Mfr. Part No.AD797ANZ
HK$69.943
Each (In a Tube of 50)
units
- Through Hole PDIP Dual 1 8 - 450MHz - ±12 V, ±15 V, ±9 V 20V/µs - +85 °C -40 °C
RS Stock No. 522-8427
Mfr. Part No.AD797ANZ
HK$86.53
Each
units
- Through Hole PDIP Dual 1 8 - 450MHz - ±12 V, ±15 V, ±9 V 20V/µs - +85 °C -40 °C
RS Stock No. 100-3867
Mfr. Part No.OPA637AU
HK$187.466
Each (In a Tube of 75)
units
- Surface Mount SOIC Dual 1 8 - 80MHz - ±15V 135V/µs - +85 °C -25 °C
RS Stock No. 923-2307
Mfr. Part No.OPA627AU
HK$196.301
Each (In a Tube of 75)
units
Precision Surface Mount SOIC Dual 1 8 - 16MHz - ±15V 55V/µs - +85 °C -25 °C
RS Stock No. 889-5689
Mfr. Part No.MCP6001T-I/OT
BrandMicrochip
HK$1.479
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single 1 5 3 V, 5 V 1MHz - - 0.6V/µs - +85 °C -40 °C
RS Stock No. 698-9041
Mfr. Part No.MCP6001T-I/OT
BrandMicrochip
HK$6.72
Each
units
General Purpose Surface Mount SOT-23 Single 1 5 3 V, 5 V 1MHz - - 0.6V/µs - +85 °C -40 °C
RS Stock No. 288-907
Mfr. Part No.OPA627AU
HK$232.32
Each
units
Precision Surface Mount SOIC Dual 1 8 - 16MHz - ±15V 55V/µs - +85 °C -25 °C
RS Stock No. 825-3609
Mfr. Part No.TLE2021AIP
HK$22.914
Each (In a Pack of 5)
units
Precision Through Hole PDIP Dual 1 8 - 2MHz - ±2 → ±20V 0.65V/µs 1 kHz +85 °C -40 °C
RS Stock No. 162-4672
Mfr. Part No.LF353M/NOPB
HK$5.974
Each (In a Tube of 95)
units
- Surface Mount SOIC Dual 2 8 - 4MHz - ±12 V, ±15 V, ±9 V 13V/µs - +70 °C 0 °C
RS Stock No. 709-5550
Mfr. Part No.OP284EPZ
HK$96.38
Each
units
- Through Hole PDIP 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. 921-6960
Mfr. Part No.LM4562NA/NOPB
HK$11.275
Each (In a Tube of 40)
units
Audio Through Hole PDIP Dual 2 8 - 55MHz - ±2.5 → ±17V ±20V/µs - +85 °C -40 °C
RS Stock No. 536-1035
Mfr. Part No.LF353M/NOPB
HK$7.795
Each (In a Pack of 20)
units
- Surface Mount SOIC Dual 2 8 - 4MHz - ±12 V, ±15 V, ±9 V 13V/µs - +70 °C 0 °C
RS Stock No. 162-8720
Mfr. Part No.TLE2021AIP
HK$18.397
Each (In a Tube of 50)
units
Precision Through Hole PDIP Dual 1 8 - 2MHz - ±2 → ±20V 0.65V/µs 1 kHz +85 °C -40 °C
RS Stock No. 545-6919
Mfr. Part No.LT1210CT7#PBF
HK$123.76
Each
units
Current Feedback Through Hole TO-220 Dual 1 7 - 55MHz - ±12 V, ±9 V 900V/µs - +70 °C 0 °C
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