This Product Selection Guide contains information to help select products in the Instrumentation, OP Amps, Buffer Amps category on DigiKey.com
Instrumentation, OP Amps, Buffer Amps are used for the reproduction of analog signals with an attendant increase in amplitude, reduction of source impedance, and/or isolation of a signal source from a driven load, as well as performing mathematical operations on analog signals such as summation, negation, integration, etc. Instrumentation amplifiers, chopper stabilized/auto-zero/zero-drift amplifiers, and current feedback types are included.
SelectionCharacteristics
Specifications to determine which Instrumentation, OP Amp, Buffer Amp is right for your application.
Amplifier Type: Indicates the intended function or a defining design feature of a device.
Number of Circuits: Indicates the number of circuits of similar function that are implemented within the device.
Output Type: Indicates the type of electrical signal the device provides, such as differential or single-ended.
Slew Rate: Characterizes the maximum rate at which an amplifier can change its output voltage in response to a change in input. Measured under manufacturer-defined test conditions.
Gain Bandwidth Product: A measure of device speed, preferred for op amps based on a voltage-feedback design.
-3db Bandwidth: Characterizes the upper limit of an amplifier’s useful frequency response, indicating the frequency at which its gain has fallen by 3dB under specified test conditions. Commonly used instead of gain-bandwidth product for characterizing the speed of current-feedback amplifiers.
Current – Input Bias: Typical magnitude of current flow through a high-impedance amplifier input terminal. (Ideally zero)
Voltage – Input Offset: Characterizes an error term modeled as a DC voltage source in series with one of the op amp inputs.
Current – Supply: This represents the maximum current to which a device will meet its given specifications. Exceeding this current may damage the device and/or other system components.
Current – Output / Channel: Typically this indicates the maximum current an output channel can provide.
Voltage - Supply Span (Min): This indicates the low voltage limit which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Voltage - Supply Span (Max): This indicates the high voltage limit which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Mounting Type: Indicates how the device is attached.
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the suppliers device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.
ProductExamples
| MFR PART # | LT1206CT7#PBF |
|---|---|
| DIGIKEY PART # | 505-LT1206CT7#PBF-ND |
| MANUFACTURER | Analog Devices Inc. |
| DESCRIPTION | Current Feedback Amplifier 1 Circuit TO-220-7 |
| DATASHEET | Click Here |
| MFR PART # | MCP6006T-E/OT |
|---|---|
| DIGIKEY PART # | 150-MCP6006T-E/OTTR-ND - Tape & Reel (TR) |
| MANUFACTURER | Microchip Technology |
| DESCRIPTION | General Purpose Amplifier 1 Circuit Rail-to-Rail SOT-23-5 |
| DATASHEET | Click Here |
| MFR PART # | ICL7650SIPA-1 |
|---|---|
| DIGIKEY PART # | 2156-ICL7650SIPA-1-ND |
| MANUFACTURER | Harris Corporation |
| DESCRIPTION | Chopper (Zero-Drift) Amplifier 1 Circuit 8-PDIP |
| DATASHEET | Click Here |
Schematic Symbol
Amplifier schematic symbol courtesy of Scheme-It please use the link for more information and symbols.
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