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PCM2705DBG4 from BB

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PCM2705DBG4

Manufacturer: BB, TI

98dB SNR Stereo USB2.0 FS DAC with line-out and S/PDIF output, Bus/Self-powered (S/W Control) 28-SSOP -25 to 85

Partnumber Manufacturer Quantity Availability
PCM2705DBG4 BB, TI 124 In Stock

Description and Introduction

98dB SNR Stereo USB2.0 FS DAC with line-out and S/PDIF output, Bus/Self-powered (S/W Control) 28-SSOP -25 to 85 The **PCM2705DBG4** is a high-performance USB digital-to-analog converter (DAC) integrated circuit designed for audio applications. Manufactured by Texas Instruments, this component enables seamless conversion of digital audio signals from a USB interface into high-quality analog output, making it ideal for USB-powered audio devices such as headphones, speakers, and external sound cards.  

Featuring a built-in USB transceiver and a 16-bit stereo DAC, the PCM2705DBG4 supports a sampling rate of up to 48 kHz, ensuring clear and accurate audio reproduction. Its plug-and-play functionality eliminates the need for external drivers, simplifying integration into consumer electronics. Additionally, the device includes an on-chip clock generator, reducing the need for external components and lowering system costs.  

The PCM2705DBG4 operates with low power consumption, making it suitable for portable applications. Its compact SSOP-28 package allows for efficient PCB space utilization in compact designs. With compliance to USB 1.1 standards and robust performance, this IC is widely used in USB audio adapters, multimedia peripherals, and other audio enhancement solutions.  

Engineers value the PCM2705DBG4 for its reliability, ease of implementation, and high-fidelity audio output, making it a preferred choice in modern digital audio systems.

Application Scenarios & Design Considerations

98dB SNR Stereo USB2.0 FS DAC with line-out and S/PDIF output, Bus/Self-powered (S/W Control) 28-SSOP -25 to 85

Alternative Part Number

  • PCM2705DB --: Same PCM2705 USB DAC family from the original manufacturer (Burr-Brown is now part of TI); the DB package variant without the G4 lead-free suffix is functionally equivalent and widely available.
  • PCM2704DB --: Closely related PCM270x USB audio DAC in the same SSOP-28 package with nearly identical pinout and function; a practical drop-in for many designs when the 2705 is unavailable.
  • PCM2706DB --: Sister part in the PCM270x USB DAC series with the same package and core USB audio function; usable as an alternative with minor firmware/configuration differences.
  • PCM2704DB --: Same PCM270x USB DAC family with similar audio features and SSOP package, widely available and pin-compatible in many designs.
  • PCM2706PJT --: USB audio DAC from the same PCM270x series with comparable functionality, suitable when slight feature differences are acceptable.
  • CM108AH --: Alternative USB audio codec from a different vendor offering similar USB-to-audio conversion for drop-in functional replacement.

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