Analog-to-Digital Converters target audio applications.
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Press Release Summary:
Models PCM4202 and PCM4204 are 2- and 4-channel converters featuring 118 dB dynamic range and -105 dB total harmonic distortion. Both devices support 24-bit linear PCM output data, with sampling frequencies up to 216 kHz, and can be configured to output either 64x or 128x oversampled, 1-bit direct stream digital data for each channel. DSD input mode allows 1-bit DSD to 24-bit PCM data format conversion by utilizing internal digital decimation filter.
Original Press Release:
TI Unveils High-Performance Two- and Four-Channel Audio ADCs from Burr-Brown Pro Audio Product Line
DALLAS (Oct. 26, 2004) - Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced a pair of high-performance, 24-bit audio analog-to-digital converters (ADCs) designed for professional and broadcast audio applications. The PCM4202 (2-channel) and PCM4204 (4-channel) feature 118dB dynamic range, -105dB total harmonic distortion and up to 216kHz sampling rate. (See http://www.ti.com/sc04229.)
"The PCM4204 combines superior performance and integration with the lowest power consumption of any high-performance audio ADCs on the market," said Mike Centorino, marketing manager for TI's Burr-Brown Pro Audio products. The low power consumption (150mW per channel) helps reduce the overall power budget required for the analog-to-digital conversion subsystem, which is ideal for high channel count systems.
The devices target a wide variety of high-performance audio applications, such as digital mixing consoles, digital effects processors, multi-track recorders, broadcast studio equipment, surround sound encoders, audio test equipment and high-end A/V receivers. The PCM4202 and PCM4204 are ideally suited for use with TI's complementary professional audio devices, such as the PGA2500 digitally controlled microphone/ADC preamplifier and TMS320C6713(TM) Audio Digital Signal Processor (DSP).
The PCM4202 and PCM4204 architecture utilizes a delta-sigma ADC per channel incorporating a novel density modulated dither topology for improved dynamic performance. Both devices support 24-bit linear PCM output data, with sampling frequencies up to 216kHz, and can be configured to output either 64x or 128x oversampled, 1-bit direct stream digital (DSD) data for each channel. The DSD input mode allows 1-bit DSD to 24-bit PCM data format conversion by utilizing the internal digital decimation filter.
The PCM4202 and PCM4204 include a flexible audio serial port interface, which supports standard PCM audio and time division multiplexed (TDM) data formats - allowing system designers to choose the interface format that best suits the end application. The TDM format simplifies interfacing to audio DSPs and enables a cascade connection of several PCM4202 or PCM4204 devices.
The devices operate from a +5V analog power supply and a +3.3V digital power supply. The digital I/O is compatible with +3.3V logic families.
Available Today
The PCM4204 is packaged in a HTQFP-64 PowerPAD(TM). The PCM4202 is packaged in a SSOP-28. Both devices are available now from TI and its authorized distributors. Evaluation modules (EVMs) are available for both devices.
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.
