Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced an analog-input audio subsystem that integrates TI's field-proven stereo Class-D power amplifier and stereo DirectPath(TM) headphone amplifier into one compact package. The audio subsystem is highly flexible, enabling customers to choose different
input-to-output configurations and program design parameters to optimize
audio performance. Integrating all amplifier channels into one integrated
circuit reduces bill of materials, lowers cost and enables sleeker end
designs in wireless handsets, portable DVD players, portable gaming and
portable media players.
The TPA2050D4 audio subsystem includes a stereo Class-D amplifier which
provides a 1.4-W per channel output drive capability into 8-Ohm
loudspeakers with 90 percent efficiency to extend battery life in portable
applications. The subsystem also features a low-noise stereo DirectPath
headphone amplifier that eliminates the need for DC-blocking output
capacitors to reduce component count.
The audio subsystem has two stereo single-ended inputs that can be
configured as one stereo differential input to achieve better common-mode
noise rejection. In addition, the user can program different gains and
modes via a 1.8-V compatible I2C interface. For instance, each input
channel has a 32-step volume control with an additional four-level gain
control for the headphone amplifier. This allows the headphone volume to
differ from the loudspeaker volume if both are used simultaneously,
increasing flexibility for the consumer. The voltage limiter on the
headphone amplifier help headphone manufacturers prevent hearing damage at
high volumes and enable compliance of maximum volume standards.
Pricing and availability
The TPA2050D4 is available in a 2.61 mm x 2.61 mm WCSP package. The
audio sub-system is available now, with a suggested resale pricing of $2.30
in 1,000-piece quantities.
Extending TI's portfolio of portable audio solutions
The TPA2050D4 is optimized to work with TI's broad portfolio for
portable devices, including audio codecs (TLV320AIC3104, TLV320AIC33 and
TLV320AIC34), digital-to-analog converters (TLV320DAC32, PCM1774), power
management and TI's DSP and OMAP(TM) processors or other integrated
chipsets, such as LoCosto(TM) devices. Signal chain solutions and the
industry's largest support network enable designers to reach the market
quickly.
Texas Instruments
Texas Instruments (NYSE: TXN) helps customers solve problems and
develop new electronics that make the world smarter, healthier, safer,
greener and more fun. A global semiconductor company, TI innovates through
manufacturing, design and sales operations in more than 25 countries.
Source: Texas Instruments
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