Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Texas Instruments (April 2006-) | Subject: PCM4220 and PCM4222 24bit, 216kHz A/D convertors
Edited by the Electronicstalk Editorial
Team on 04 April 2007
A/D convertors for professional audio
recording
Two 24bit, 216kHz dual-channel analogue-to-digital convertors are intented for professional digital audio recording and processing applications.
Texas Instruments has introduced two 24bit, 216kHz analogue-to-digital convertors (ADCs) for professional digital audio recording and processing applications The new dual-channel devices combine high integration with the highest dynamic range in the industry of 124dB signal-to-noise ratio (SNR) while still reducing power consumption by 50 % compared to competing products
This article was originally published on Electronicstalk on 8 Jul 2008 at 8.00am (UK)
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"At Focusrite, we understand that performance is paramount for our professional audio customers", says Robert Jenkins, Director of Product Strategy at Focusrite Audio Engineering.
"We strive to maintain high audio quality for our audio preamplifiers from the analogue input to the digital output".
"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 optimise the device for either studio or live sound applications.
The PCM4222 enables designers to achieve system flexibility through a 6bit modulator output that bypasses the digital decimation filter.
This option provides versatility to create a digital filter in an FPGA, further customising 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 305mW of power at 48kHz, ultimately easing power supply design and enabling the option to power computer audio interfaces entirely through USB or Firewire bus.
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 132dB digital-to-analogue convertor, 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 US $14.95 and the PCM4220 is $9.95 each in quantities of 1,000 units.
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