Manufacturer Part Number

TAS1020APFBG4

Description

Stereo USB audio interface IC. Functions as a USB controller with integrated I2C interface. Packaged in a 48-pin TQFP (Thin Quad Flat Package) measuring 7mm by 7mm. Designed for USB 1.1 audio applications, supporting stereo sound. Commonly used for USB audio devices where host and audio device communication is needed. Offers digital audio conversion and USB interface in a single integrated solution. The product is classified as discontinued at Digi-Key, but 773 pieces are currently in stock as new and original.

Specifications

Compliant with USB 1.1 protocol. Supports I2C communication. Operates at a voltage supply range of 3V to 3.6V. Suitable for standard commercial temperature ranges (0°C to 70°C). Packaged in a 48-TQFP body (7x7mm). RoHS3 compliant for environmental standards. Moisture Sensitivity Level is 2, suitable for 1 year in controlled conditions. ECCN classification is EAR99 and the product is REACH unaffected.

Device Structure

Composed of a digital logic controller core for USB communication and I2C audio data management. Integrates interface circuitry for USB peripheral and host device connection. All components are assembled in a 48-pin TQFP (surface-mount package), ensuring compact size and ease of handling in SMD assembly.

Performance Characteristics

Provides reliable USB 1.1 transmission speeds. Integrates stereo audio interface with digital control. Supports low-voltage operation suitable for modern audio equipment. Maintains stable operations across typical environmental conditions for commercial electronics.

Application Environments

Used in USB stereo audio devices, such as USB microphones, sound cards, audio dongles, and embedded audio controller systems. Suitable for consumer electronics, audio peripherals, and systems requiring digital audio over USB.

Selection Guidelines

Choose this device when you require USB 1.1 audio interface with I2C support and compact surface-mount packaging. Ensure system input voltage is within 3V–3.6V. Confirm that the commercial operating temperature range (0°C to 70°C) meets your system requirements. Check compatibility with 48-TQFP mounting footprint.

Usage Considerations

Monitor supply voltage to avoid exceeding 3.6V maximum. Store and handle components observing MSL 2 guidelines. As the product is discontinued at major distributors, confirm inventory availability before committing to design. Observe careful soldering practices to protect TQFP pins during assembly.

Potential Equivalent/Replacement Models

Texas Instruments TAS1020B may be considered as a potential alternative, offering similar functionality and interface. Some other ICs serving USB audio interface functions are Microchip’s PIC32MX series (with integrated USB support) or Cmedia’s CM6400 family; however, features and pinout may differ, so review datasheets thoroughly. Because the TAS1020APFBG4 has been discontinued, direct drop-in replacements may be limited—consult Texas Instruments for recommended migration paths. If you need more options or have specific requirements, contact the Ariat-Tech sales team for further information and sourcing assistance.

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