SRC4392IPFB

Audio Special Purpose Overview

The SRC4392IPFB is a two-channel asynchronous sample rate converter (SRC) manufactured by Texas Instruments, originally from Burr-Brown. It integrates digital audio interface receiver (DIR) and transmitter (DIT) functions with flexible data routing logic. The device supports AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 standards. It operates with a +1.8V core logic supply and +3.3V for analog/digital interfaces, supporting I/O voltages from 1.65V to 3.6V. Key electrical parameters include a dynamic range of 144dB typical and THD+N of -140dB typical at full scale input.

Audio Special Purpose Feature Summary

• Dual-channel asynchronous SRC with 144dB dynamic range and -140dB THD+N
• Integrated DIR and DIT compatible with AES3, S/PDIF, and IEC 60958 standards
• Supports input/output sampling rates up to 216kHz and word lengths up to 24 bits
• Configurable via SPI or I2C serial host interface

Audio Special Purpose Applications

• Professional broadcast digital audio systems
• High-end consumer audio equipment requiring sample rate conversion
• Digital audio interface receivers and transmitters in studio gear

Audio Special Purpose Part Context

The SRC4392 belongs to the SRC4392 family of high-performance audio converters. The IPFB suffix denotes a specific package variant, typically a QFN-40 package, distinguishing it from other pinouts like the TQFP-48. This component represents the integration of Burr-Brown's legacy audio expertise into Texas Instruments' portfolio after acquisition.

Audio Special Purpose Replacement Considerations

The SRC4392IDBR is not a direct replacement due to being a single-channel device. For dual-channel applications, verify compatibility with the SRC4392IPFBR (reel version) or ensure the target design accommodates the QFN-40 footprint if replacing with another IPFB variant.