Operational Amplifiers - Op Amps

Also known as op-amps, operational amplifiers are integrated circuits that help intensify weak signals. These ICs are made up of three terminals: one output port (low-impedance) and two input pins (high-impedance). The input pins are non-inverting (the one using a + or positive sign) and inverting (uses a – or negative sign).

Op-amps are versatile, which is why they are popularly used for analog functions like control, power, and signal chain applications. Operational amplifiers function by amplifying the voltage difference between the two inputs.

Op-amps are a type of differential amplifier and can be sold as standard integrated circuits operational amplifiers or hybrid/integrated operational amplifiers. They are also often packaged as elements or components of complex ICs.

Operational amplifiers are used for a variety of electronic devices, including industrial, scientific, and consumer devices.

Classification

Operational amplifiers are classified into four: current amplifiers, voltage amplifiers, transresistance amplifiers, and transconductance amplifiers.

  • Op-amps that take a current input and produce a current output are called current amplifiers.
  • A voltage amplifier receives voltage and produces voltage at its output.
  • Transresistance amplifiers are operational amplifiers that convert current inputs while producing voltage outputs.
  • Operational amplifiers that convert voltage input into current outputs are called transconductance amplifiers.

Characteristics

The following are some of the top characteristics of operational amplifiers:

  1. Infinite open-loop gain
    In an open-loop gain, the feedback loop or path is open. The open-loop gain pertains to the measure of gain when the circuit has no feedback.
  2. Frequency response and BW or bandwidth
    Ideal operational amplifiers are capable of maintaining a high gain no matter what the signal frequency is. Higher bandwidth means higher gains and frequencies resulting to improved performance.
  3. Input impedance
    Op-amps are equipped with high input impedance, which refers to the measurement between positive and negative input terminals.
  4. Output impedance
    An op-amp’s small-value output impedance determines its capability to function as voltage buffer and how much current it can drive.

Parts from Operational Amplifiers - Op Amps Category

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MAX44265EWT+T from Maxim Integrated Products
Maxim Integrated Products

OP-AMP, 200KHZ, 0.1V/US, WLP-6; No. of Amplifiers:1 Amplifier; Bandwidth:200kHz; Slew Rate:0.1V/µs; Supply Voltage Range:1.8V to 5.5V; Amplifier Case Style:WLP; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

LMR1801HFV-LBTR from Rohm

OPAMP, 6MHZ, -40 TO 125DEG C; No. of Amplifiers:1 Amplifier; Bandwidth:6MHz; Slew Rate:2.5V/µs; Supply Voltage Range:2.2V to 5.5V, ± 1.1V to ± 2.75V; Amplifier Case Style:HVSOF; No. of Pins:5Pins; Operating Temperature Min:-40°C; RoHS Compliant: Yes

LMR324FV-GE2 from Rohm

OPAMP, 3MHZ, -40 TO 85DEG C; No. of Amplifiers:4 Amplifier; Bandwidth:3MHz; Slew Rate:1V/µs; Supply Voltage Range:2.7V to 5.5V; Amplifier Case Style:SSOP; No. of Pins:14Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LMR342FVM-GTR from Rohm

OPAMP, 2MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:2MHz; Slew Rate:1V/µs; Supply Voltage Range:2.7V to 5.5V; Amplifier Case Style:MSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LMR358F-GE2 from Rohm
Rohm

OPAMP, 3MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:3MHz; Slew Rate:1V/µs; Supply Voltage Range:2.7V to 5.5V; Amplifier Case Style:SOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LMR822F-GE2 from Rohm
Rohm

OPAMP, 5.5MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:5.5MHz; Slew Rate:2V/µs; Supply Voltage Range:2.5V to 5.5V; Amplifier Case Style:SOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LMR822FVM-GTR from Rohm

OPAMP, 5.5MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:5.5MHz; Slew Rate:2V/µs; Supply Voltage Range:2.5V to 5.5V; Amplifier Case Style:MSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LMR932FVM-GTR from Rohm

OPAMP, 1.5MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:1.5MHz; Slew Rate:0.42V/µs; Supply Voltage Range:1.8V to 5V; Amplifier Case Style:MSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating TemperatureRoHS Compliant: Yes

LMR932FVT-GE2 from Rohm

OPAMP, 1.5MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:1.5MHz; Slew Rate:0.42V/µs; Supply Voltage Range:1.8V to 5V; Amplifier Case Style:TSSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

LMR982FVM-TR from Rohm

OPAMP, 1.5MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:1.5MHz; Slew Rate:0.42V/µs; Supply Voltage Range:1.8V to 5V; Amplifier Case Style:MSOP; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

LM2902F-E2 from Rohm
Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:4 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:SOP; No. of Pins:14Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LM2902FJ-E2 from Rohm
Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:4 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:SOP-J; No. of Pins:14Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

LMR931G-GTR from Rohm
Rohm

OPAMP, 1.5MHZ, -40 TO 85DEG C; No. of Amplifiers:1 Amplifier; Bandwidth:1.5MHz; Slew Rate:0.42V/µs; Supply Voltage Range:1.8V to 5V; Amplifier Case Style:SSOP; No. of Pins:5Pins; Operating Temperature Min:-40°C; Operating TemperatureRoHS Compliant: Yes

LM358F-GE2 from Rohm
Rohm

OPAMP, 800KHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:SOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LM2902FV-E2 from Rohm
Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:4 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:SSOP; No. of Pins:14Pins; Operating Temperature Min:-40°C; Operating TemperatureRoHS Compliant: Yes

LM2902FVJ-E2 from Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:4 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:TSSOP; No. of Pins:14Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

LM2904FV-E2 from Rohm
Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:SSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LM2904FVM-GTR from Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:MSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes

LM2904FVT-E2 from Rohm

OPAMP, 800KHZ, -40 TO 125DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:800kHz; Slew Rate:0.3V/µs; Supply Voltage Range:3V to 32V; Amplifier Case Style:TSSOP; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating TemperatureRoHS Compliant: Yes

LM4559FJ-GE2 from Rohm

OPAMP, 4MHZ, -40 TO 85DEG C; No. of Amplifiers:2 Amplifier; Bandwidth:4MHz; Slew Rate:3.5V/µs; Supply Voltage Range:8V to 36V, ± 4V to ± 18V; Amplifier Case Style:SOP-J; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes

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