This Product Selection Guide contains information to help select products in the Audio Amplifiers category on DigiKey.com
Audio Amplifiers are designed specifically for replicating signal-level audio content at increased power levels sufficient to drive headphones, speakers, or similar transducers. Features such as mute inputs, volume controls, and anti-transient (depop) functions distinguish them from general purpose amplifiers. Audio amplifier classes of all types are included such as devices based on Class A, Class D, Class G topologies and others, as well as devices that integrate additional functionality such as analog-to-digital conversion in addition to the amplification function.
SelectionCharacteristics
Specifications to determine which Audio Amplifier is right for your application.
Type: Indicates the operational mode(s) of a featured amplifier IC, which has categorical significance for performance traits such as electrical efficiency.
Output Type: Indicates the type of electrical signal the device provides, such as 1-channel (mono), 2-channel (stereo), or 4 half bridge.
Max Output Power x Channels @ Load: Indicates manufacturer’s rated output power for a device, as a function of channel configuration and nominal load impedance.
Voltage – Supply: Typically represented by a range, this indicates the low and high voltage limits which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Features: These are different capabilities or properties of the device such as bass boost, mute, or thermal protection.
Mounting Type: Indicates how the device is attached.
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.
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.
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.
ProductExamples
| MFR PART # | MAX9723DETE+ |
|---|---|
| DIGIKEY PART # | MAX9723DETE±ND |
| MANUFACTURER | Analog Devices Inc./Maxim Integrated |
| DESCRIPTION | Amplifier IC Headphones, 2-Channel (Stereo) Class AB 16-TQFN (4x4) |
| DATASHEET | Click Here |
| MFR PART # | TPA301DR |
|---|---|
| DIGIKEY PART # | 296-1945-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Texas Instruments |
| DESCRIPTION | Amplifier IC 1-Channel (Mono) Class AB 8-SOIC |
| DATASHEET | Click Here |
| MFR PART # | TDA7563B |
|---|---|
| DIGIKEY PART # | 497-18654-ND |
| MANUFACTURER | STMicroelectronics |
| DESCRIPTION | Amplifier IC 4-Channel (Quad) Class AB 27-Flexiwatt (Vertical) |
| 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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