Amplifier ICs

An Amplifier is an electronic device that increases the amplitude of an electrical signal. This effect is called amplifier gain.

Amplifiers are grouped into classes and types, and have historically changed from vacuum tube (valve) technology to semiconductor transistor based devices. Valves operated under the principle of thermionic emission from a hot filament in a vacuum controlled by a control grid. They are still used today in high power applications like radar. Semiconductor Amplifiers operate by the diffusion of charge carriers across a semiconductor junction controlled by an electric field and are the most common amplifiers readily available today.

Amplifiers are categorized in respect to their ability to effectively amplify either a voltage or current input signal. A voltage amplifier amplifies the input voltage signals and produces a larger output voltage. Current amplifiers, also known as transimpedance amplifiers, sense the currents at the inputs, and output a voltage to the load. Transconductance and Transresistance Amplifiers swap this effect – an input voltage or current produce a larger output current or voltage respectively. 

One key performance parameter of an amplifier is its linearity, or its ability to accurately represent the input with the same shape signal in the time domain at the output. Other key performance parameters include the slew rate, frequency response, noise, and gain bandwidth just to name a few. 

The class of Amplifier represents the amount of variation an output signal has over one cycle if the input is a sinusoidal waveform. This provides tradeoffs between linearity and efficiency. The more linear an amplifier is, the lower the distortion product. Efficiency of an amplifier is the measure of power supplied to the amplifier compared to the resulting amplified output. Amplifiers that are designed for higher efficiency increase the amount of time the output stage is fully on or fully off, which may increase distortion to the signal. 

Classifications of amplifiers are A, AB, B, C, D and E. Class A is the most linear and class C is the least linear. Class C is not suitable for audio applications and typically is used in products like RF transmitters. Classes D and E are switching amplifiers that can utilize output circuit stages containing harmonic resonators, multiple supply rail switching, complimentary output techniques, and PWM and delta-sigma modulation to increase efficiency and reconstruct the input waveform at the output.

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CA3080E

2MHz, Operational Transconductance Amplifier
$4.99

CA3140EZ

4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
$1.80

CA3140EZ

Single channel operational Amplifier CA3140EZ
$2.16

CA3140EZ

4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
$2.16

CA3140EZ

Single channel operational Amplifier CA3140EZ
$1.69

CA3140EZ

4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
$2.16

LF356N

Wide bandwidth single J-FET operational amplifier LF356N
$1.53

LF356N

Wide bandwidth single J-FET operational amplifier LF356N
$1.28

LF398N

Monolithic Sample-and-Hold Circuit
$1.44

LF398N

Monolithic Sample-and-Hold Circuit
$1.62

LF442CN

Dual Low Power JFET Input Operational Amplifier
$1.35

LM311

Analog comparator LM311
$0.45

LM311P

Analog comparator LM311P
$1.08

LM311P

Analog comparator LM311P
$0.54

LM311P

Analog comparator LM311P
$0.54

LM311P

Analog comparator LM311P
$0.47

LM3900N

Quad Norton Operational amplifier
$0.72

LM3900N

Quad Norton Operational amplifier
$2.30

LM3900N

Quad Norton Operational amplifier
$1.08

LM741CN

Operational Anplifier LM741CN
$0.83

LM741CN

Operational Anplifier LM741CN
$0.97

NJM13600D

Daul transconductance amplifier NJM13600D
$1.44

OP07CP

Precision Operational Amplifier
$0.58

OP07CP

Precision Operational Amplifier
$0.58

TL071CP

Operational Amplifier TL071CP
$0.76

TL071CP

Operational Amplifier TL071CP
$0.58

TL072CN

Low-Noise JFET-Input Operational Amplifier
$0.36

TL072CP

Low-Noise JFET-Input Operational Amplifier
$0.29

TL072CP

Low-Noise JFET-Input Operational Amplifier
$0.34

CA3130E

15MHz, BiMOS Operational Amplifier with MOSFET Input/CMOS Output
$1.66

LF444CN

Quad Low Power JFET Input Operational Amplifier
$1.80

LF444CN

Quad Low Power JFET Input Operational Amplifier
$1.30

LF444CN

Quad Low Power JFET Input Operational Amplifier
$1.26

LF444CN

Quad Low Power JFET Input Operational Amplifier
$2.02

LF444CN

Quad Low Power JFET Input Operational Amplifier
$2.02

LT1055CN8

Precision, High Speed, JFET Input Operational Amplifier
$8.10

TL082CN

General purpose JFET dual operation amplifiers
$0.68

TL082CP

General purpose JFET dual operation amplifier
$0.47

LM13700N

Dual current controlled trans conductance amplifiers
$1.62

LM3900N

Quad Norton Operational amplifier
$1.01

LM393N

Lo-Pwr Dual Voltage Analog Comparator
$1.10

LM393P

Двойной маломощный компаратор напряжения LM393P
$0.43

LM393P

Двойной маломощный компаратор напряжения LM393P
$0.22

LM393P

Двойной маломощный компаратор напряжения LM393P
$0.38

LT1013DN8

Dual Precision Op Amp
$4.95

NJM13700D

Dual current controlled trans conductance amplifiers
$1.44

CA3280AE

Dual, 9MHz, Operational Transconductance Amplifier (OTA)
$11.93

LF353N

Dual operational Amplifir JFET
$1.15

LF353N

Dual operational Amplifir JFET
$1.08

LF353N

Dual operational Amplifir JFET
$0.76

LF353N

Dual operational Amplifir JFET
$1.08

LF353P

Dual operational Amplifir JFET
$0.40

LF412CN

Low Drift Dual JFET Input Operational Amplifier
$1.80

LF412CN

Low Drift Dual JFET Input Operational Amplifier
$1.80

LF412CN

Low Drift Dual JFET Input Operational Amplifier
$1.66

LM324N

Low Power Quad Operational Amplifiers
$0.94

LM324N

Quad operational amplifier
$0.43

LM324N

Quad operational amplifier LM324N
$0.58

LM339N

Quad analog differential comparator
$0.36

LM339N

Quad analog differential comparator
$0.86

LM339N

Quad analog differential comparator
$0.49

LM393N

Quad analog differential comparator
$0.86

OPA137PA

Operational Amplifiers - Op Amps Low Cost FET-Input Oper Amplifier
$3.96

UA741CN

General-Purpose Operational Amplifier
$0.36

UA741CP

General-Purpose Operational Amplifier
$0.36

LM311N

$1.33

LM358N

Low-Power, Dual-Operational Amplifier LM358N
$0.43

LM358P

Single Supply Dual Operational Amplifier
$0.50

LM358P

Single Supply Dual Operational Amplifier
$0.58

OPA2137PA

OPA2137PA Двойной Прецизионный Операционный усилитель. 1 МГц, 3.5 В/мкс, ± 2.25В до ± 18В
$3.78

TL074CN

Quad Low-Noise JFET-Input Operational Amplifier
$0.38

TL074CN

Quad Low-Noise JFET-Input Operational Amplifier
$0.29

TL074CN

Quad Low-Noise JFET-Input Operational Amplifier
$0.81

TL074CN

Quad Low-Noise JFET-Input Operational Amplifier
$0.25

TL084CN

Quad JFET-Input Operational Amplifier
$0.81

TL084CN

Quad JFET-Input Operational Amplifier
$0.81

TL084CN

Quad JFET-Input Operational Amplifier
$0.81

TL084CN

Quad JFET-Input Operational Amplifier
$0.81

LM358P

Single Supply Dual Operational Amplifier
$0.11

LF351N

Single Wideband JFET Operational Amplifier
$0.72

LF351N

Single Wideband JFET Operational Amplifier
$1.08

NJM4558D

Dual high-gain internally compensated operational amplifier
$0.47

RC4558P

Dual high-gain internally compensated operational amplifier
$0.32

LM307N

General purpose operational amplifier, with the necessary frequency compensation built into the chip
$1.98

LM301AN

General purpose single channel operationl opamp
$1.40

UA301ATC

General purpose single channel operational amplifier
$1.30

NJM5534D

Op Amp Single Low Noise
$1.08

LF411C

Low Offset, Low Drift JFET Input Operational Amplifier
$2.16

LF411C

Low Offset, Low Drift JFET Input Operational Amplifier
$2.16

LF411CN

Low Offset, Low Drift JFET Input Operational Amplifier
$2.16

LM1458N

Dual Operational Amplifier
$1.08

NJM1458D

Dual Operational Amplifier
$0.72

4559P

Dual low noise operational amplifier
$0.67

NJM4559D

Dual low noise operational amplifier
$0.61

TL081CP

Single JFET-Input Operational Amplifier
$0.54

NE5532P

Operational Amplifiers - Op Amps Dual Low Noise
$0.58