216-kHz Stereo ADCs with Industry-Leading 124-dB Dynamic Range Core

At Focusrite, we understand that performance is paramount for our professional audio customers. We strive to maintain high audio quality for our audio preamplifiers from the analog input to the digital output said Robert Jenkins, director of product strategy of Focusrite Audio Engineering Ltd. Texas Instruments enables us to exceed our customers' expectations with high-performance devices, such as the PCM4222, that make it easier to develop the products behind the music.



The PCM4220 and PCM4222 integrate an on-chip, linear phase decimation filtering engine that supports both classic and low group delay filter responses, allowing designers to optimize the device for either studio or live sound applications. The PCM4222 enables designers to achieve system flexibility through a 6-bit modulator output that bypasses the digital decimation filter. This option provides versatility to create a digital filter in an FPGA, further customizing the performance for end-product differentiation. Both devices simplify board layout and system partitioning with a time division multiplex function that allows OEMs to daisy chain up to four devices into a single serial port on a DSP or FPGA.



In addition to uncompromising performance and integration, these new devices consume only 305 mW of power at 48 kHz, ultimately easing power supply design and enabling the option to power computer audio interfaces entirely through USB or Firewire bus.



The PCM4222 completes TI's industry-leading professional audio signal chain offering, providing customers with the silicon, software, systems expertise and support to get to market quickly. When combined with the PGA2500 preamplifier and the OPA1632 audio amplifier, the PCM4222

complements the highest-performance input signal chain available. When combined with a 132-dB digital-to-analog converter, such as the PCM1792A, and a low-noise headphone amplifier, such as the TPA6120A2, the fidelity of the signal can be maintained from input to output.



The PCM4222 and PCM4220 are available now in 48-pin TQFP packages. Pricing for the PCM4222 is $14.95 and the PCM4220 is $9.95 each in quantities of 1,000 units.