audio/videoZONE Products for the week of January 1, 2007

Texas Instruments Says . . .
SRC4392: High Performance Dual Channel Sample Rate Converter For Professional Audio
Device Integrates SRC with Digital Audio Interface Receiver and Transmitter

Texas Instruments Incorporated (TI) introduced the industry's highest performance, combo sample rate converter (SRC) from the company's Burr-Brown pro audio product line. The SRC4392 integrates a two-channel asynchronous SRC with a digital audio interface receiver (DIR) and transmitter (DIT). Featuring 144dB dynamic range, -140dB distortion and up to 216kHz sampling rates, the device is used in a variety of professional and broadcast audio applications, such as digital mixing consoles, digital audio workstations, audio distribution and broadcast studio equipment.

"The SRC4392 delivers performance and integration that is unmatched in the market," said Mike Centorino, marketing manager for TI's Burr-Brown Pro Audio products. "No other integrated sample rate converter provides customers with 192kHz sampling rates and 144dB dynamic range in a single chip. This device enables digital audio recovery and sample rate conversion to be transparent in the audio signal path, which is ideal for pro audio systems."

The SRC4392 combines a wide input-to-output sampling ratio, handling all major audio rates up to 216kHz, with outstanding dynamic range of 144dB and ultra-low distortion of -140dB THD+N. SPI or I2C interface provides access to on-chip registers and data buffers.

EN-Genius Says...

TI has taken the analogZONE Product of the Year Award-winning SRC4190-93 sample rate converters and turned them into dual-channel products, while also adding a digital audio interface receiver and transmitter and a pair of serial ports.

The systems can be operated up to 216 kHz sampling rates, with a DIR lock range down to 20 kHz. Both the DIR and DIT are compatible with EIAJ CP-1201, AES3, S/PDIF and IEC 60958 interfaces.

The outstanding dynamic range and low distortion numbers of the earlier parts are maintained with the new products. The original parts consumed 225 mW total power while these dual channel parts max out at only 326 mW at the highest sampling rate. Two supply voltages are still required with 1.8 V for the core and 3.3 V for the remainder. The I/O voltages can be between 1.65 V and 3.6 V, as required. Control can be over either a 4-wire SPI or a 2-wire I²C interface using the on-chip control registers and data buffers.

TI is offering all this performance, with an additional channel and all you need to get the serial signals to and from the SRCs, at the same price as the original parts. As before, there is the high-performance part, the SRC4392, and a downgraded SRC4382 at a lower price. The SRC4392 will continue TI's dominance in the professional and broadcast markets and, hopefully, TI is going to have 100 piece pricing at least double the 1000-piece price. The SRC4382 will hit the high-end pro-audio and highest-grade in-vehicle audio systems. Both products will be hugely successful.

The SRC4392 and SRC4382 are in production in Pb-free TQFP-48 with pricing of the SRC4392 at $9.95 and the SRC4382 at $7.50, both in 1000-piece lots.

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