Overview
The SRC4392IPFBR, produced by Texas Instruments, is a highly-integrated CMOS device designed for professional and broadcast digital audio systems. It combines a high-performance, two-channel, asynchronous sample rate converter (SRC) with a digital audio interface receiver (DIR) and transmitter (DIT), two audio serial ports, and flexible distribution logic for interconnecting the function block data and clocks. This device is part of TI's Burr-Brown pro audio product line and is known for its exceptional performance and integration, making it ideal for various professional audio applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Dynamic Range (A-Weighted) | 144 dB (typical) | - |
| Total Harmonic Distortion and Noise (THD+N) | -140 dB (typical) | - |
| Audio Input and Output Data Word Lengths | Up to 24 bits | - |
| Input and Output Sampling Frequencies | Up to 216 kHz | - |
| Input-to-Output Sampling Ratio | 16:1 to 1:16 continuous | - |
| PLL Lock Range | 20 kHz to 216 kHz | - |
| Power Supplies | +1.8V core, +3.3V I/O | - |
| Packages | QFN-40, TQFP-48 | - |
Key Features
- Two-channel asynchronous sample rate converter (SRC)
- Digital audio interface receiver (DIR) and transmitter (DIT)
- Two audio serial ports (Ports A and B) supporting up to 216 kHz sampling rates
- Supports left-justified, right-justified, and Philips I2S™ data formats
- Automatic detection of the input-to-output sampling ratio and non-PCM audio streams
- Digital de-emphasis filtering for 32 kHz, 44.1 kHz, and 48 kHz input sampling rates
- Digital output attenuation and mute functions
- Output word length reduction
- Status registers and interrupt generation for flag and error conditions
- User-selectable serial host interface: SPI or Philips I2C™
- Four general-purpose digital outputs, multifunction programmable via control registers
- Extensive power-down support with functional blocks disableable individually
Applications
- Digital mixing consoles
- Digital audio workstations
- Audio distribution and broadcast studio equipment
- DVD/CD recorders
- Surround sound decoders and A/V receivers
- Car audio systems
Q & A
- What is the dynamic range of the SRC4392?
The dynamic range of the SRC4392 is 144 dB (typical) with an A-weighted input of –60 dB.
- What are the supported sampling frequencies for the SRC4392?
The SRC4392 supports input and output sampling frequencies up to 216 kHz.
- What types of data formats does the SRC4392 support?
The SRC4392 supports left-justified, right-justified, and Philips I2S™ data formats.
- What is the input-to-output sampling ratio range of the SRC4392?
The input-to-output sampling ratio range is 16:1 to 1:16 continuous.
- How is the SRC4392 configured and controlled?
The SRC4392 is configured using on-chip control registers and data buffers, accessible through either a 4-wire SPI port or a 2-wire Philips I2C bus interface.
- What power supplies are required for the SRC4392?
The SRC4392 requires a +1.8V core logic supply and a +3.3V supply for powering the DIR, DIT, and line driver and receiver functions.
- What packages is the SRC4392 available in?
The SRC4392 is available in QFN-40 and TQFP-48 packages.
- Does the SRC4392 support power-down modes?
Yes, the SRC4392 has extensive power-down support, allowing functional blocks to be disabled individually when not in use.
- What are the key applications of the SRC4392?
The SRC4392 is used in digital mixing consoles, digital audio workstations, audio distribution and broadcast studio equipment, DVD/CD recorders, surround sound decoders, and car audio systems.
- Does the SRC4392 support digital de-emphasis filtering?
Yes, the SRC4392 supports digital de-emphasis filtering for 32 kHz, 44.1 kHz, and 48 kHz input sampling rates.
