TI introduces Hi-Fi audio solution for SACD and DVD audio players

DALLAS, June 10 /PRNewswire/ -- Setting new benchmarks for high
performance audio, Texas Instruments Incorporated (NYSE: TXN - News; TI) introduced today
a high-fidelity headphone driver that completes an entire audio signal chain for
super-audio compact disc (SACD) and DVD audio players and other systems with
similar demanding requirements. (See http://www.ti.com/sc04141 for more
information.)

The TPA6120A2 delivers exceptional performance in terms of dynamic range,
signal to noise ratio and slew rate. When matched with the OPA4134 audio
operational amplifier (op amp) and the PCM1792 or DSD1792 digital-to-analog
converter (DAC) from TI's Burr-Brown product line, the entire audio chipset
maintains a dynamic range greater than 120 dB. The chipset enables a pure and
natural sound, so breathtaking the listener could mistake it for the original
source.

Unmatched Performance Enables Superior Sound Quality

The TPA6120A2 is based on a current-feedback architecture. Three key
advantages make current-feedback amplifiers excellent low distortion audio power
amplifiers. First, a lightning-quick 1300 V/us slew rate prevents odd order
distortion anomalies. Together with the slew rate, the high current-on- demand
output enables the amplifier to respond quickly and linearly, avoiding any
output distortion and unwanted noise. Finally, the gain-independent frequency
response maintains the full bandwidth of the amplifier at any gain setting,
which keeps excess loop gain from decreasing and causing harmonic distortion.

Superior sound quality from the OPA4134 is derived from its FET input stage
and high drive output stage. The FET inputs respond very quickly and the output
signal can swing to nearly 1 V from the supply rails when driving impedances
greater than 2 kohms. This exceptional operation delivers an ultra-low 0.00008
percent total harmonic distortion (THD) and 8 nV/square root Hz noise floor.

The PCM1792 and DSD1792 DACs employ TI's advanced-segment sigma-delta
architecture, enabling unmatched dynamic range performance of up to 132 dB, with
improved tolerance to clock jitter. Balanced current outputs provide increased
immunity to noise and allow the user to optimize the analog performance with the
output filters. Both the PCM1792 and DSD1792 accept 24- bit PCM and 1-bit DSD
audio data formats, and features such as digital attenuation, de-emphasis and
soft mute can be controlled with SPI or I2C interfaces.

In addition to offering the complete signal chain, TI offers the Aureus(TM)
family of audio digital signal processors (DSP) to perform the audio processing
functions in high-fidelity systems. For more information on TI's complete
offering of products focused on audio systems, please see the Audio Solutions
Guide available at http://www.ti.com/sc04141b .

Available Today

The TPA6120A2, OPA4134, PCM1792 and DSD1792 are available now from Texas
Instruments and its authorized distributors. The TPA6120A2 comes in a standard
PowerPAD(TM) surface mount 20-pin small outline package (SOIC). The OPA4134 is
available in a standard 14-pin dual inline package (DIP) and a standard 14-pin
small outline package (SOIC). The PCM1792 and DSD1792 are available in a
standard surface mount 28-pin small shrink outline package (SSOP). Suggested
resale pricing in quantities of 1,000 start at $1.90 for the TPA6120A2, $1.75
for the OPA4134 and $13.65 for the PCM1792 or DSD1792.

Texas Instruments Incorporated provides innovative DSP and analog
technologies to meet our customers' real world signal processing requirements.
In addition to Semiconductor, the company's businesses include Sensors &
Controls, and Educational & Productivity Solutions. TI is headquartered in
Dallas, Texas, and has manufacturing, design or sales operations in more than 25
countries.