Audio Special Purpose

This Product Selection Guide contains information to help select products in the Audio Special Purpose category on

Special Purpose audio devices are semiconductors designed to filter, drive, amplify, convert, and interface audio signals. The characteristics are function, applications, number of channels, interface, voltage, and specifications. The applications include audio systems, automotive audio, consumer audio, musical instruments, professional audio, communication systems, telecommunication systems, digital audio, driver, pre-amplifier, signal mixing, signal processing, voice trigger solution, or 10 Base-T.


Function: Describes the main function or usage of the circuit.

Applications: Application is the type of equipment or environment the device will be used in, they are tested and typically rated by a third party to ensure certain minimum standards for the application they are intended for. You could use one with a higher rating, but you cannot use one with a lower rating as it will fail in that application. For example, you could use a medically rated device to replace a commercial device, but you cannot replace the medical device with the commercial device.

Number of Channels: The number of output signal paths (channels) supported by the device.

Interface: Indication of which interface(s) or protocol(s) are used by the device to communicate with other components in the system.

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.

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.

Specifications: Describes specifications of the device’s primary function.

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.



MFR PART # Rohm Semiconductor
DIGI-KEY PART # BD37513FS-E2TR-ND - Tape & Reel (TR)
DESCRIPTION Audio Audio Tone Processor 4 Channel 20-SSOP-A


MFR PART # Texas Instruments
DIGI-KEY PART # 296-17962-5-ND
DESCRIPTION Audio Volume Control 2 Channel 16-SOIC

Schematic Symbol


Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.


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If you have any general questions on the specifications for selecting Audio Special Purpose, please reply using the button below. If you have questions on specific Audio Special Purpose please post those questions in the Integrated Circuits (ICs) category.