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PCM5121PW Datasheet(PDF) 2 Page - Texas Instruments |
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PCM5121PW Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 107 page  PCM5121, PCM5122 SLAS763A – AUGUST 2012 – REVISED SEPTEMBER 2012 www.ti.com space This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. OTHER KEY FEATURES The PCM512x provides 2.1VRMS ground centered • Integrated High-Performance Audio PLL With outputs, allowing designers to eliminate DC blocking BCK Reference To Generate SCK Internally capacitors on the output, as well as external muting circuits traditionally associated with single supply line • Accepts 16-, 24-, And 32-Bit Audio Data drivers. • PCM Data Formats: I2S, Left-Justified, Right- Justified, TDM The integrated line driver surpasses all other charge- pump based line drivers by supporting loads down to • SPI or I2C Control 1k Ω. By supporting loads down to 1kΩ, the PCM512x • Software or Hardware Configuration can essentially drive up to 10 products in parallel. • Automatic Power-Save Mode When LRCK And (LCD TV, DVDR, AV Receivers etc). BCK Are Deactivated The integrated PLL on the device removes the • 3.3V Failsafe LVCMOS Digital Inputs requirement for a system clock (commonly known as • Single Supply Operation: master clock), allowing a 3-wire I2S connection, along with reducing system EMI. – 3.3V Analog, 1.8V or 3.3V Digital In addition, the PLL is completely programmable, • Integrated Power-On Reset allowing the device to become the I2S clock master • Small 28-pin TSSOP Package and drive a DSP serial port as a slave. The PLL allows a non-standard clock (up to 50MHz) to be a APPLICATIONS source to generate the audio-related clock (such as 24.576MHz). • A/V Receivers • DVD, BD Players Intelligent clock error and PowerSense under voltage protection utilizes a two level mute system for pop- • HDTV Receivers free performance. Upon clock error or system power • Applications Requiring 2VRMS Audio Output failure, the device digitally attenuates the data (or last known good data), then mutes the analog circuit. DESCRIPTION Compared with existing DAC technology, the The PCM512x devices are a family of monolithic PCM512x family offers up to 20dB lower out-of-band CMOS integrated circuits that include a stereo digital- noise, reducing EMI and aliasing in downstream to-analog converter and additional support circuitry in amplifiers/ADCs. (from traditional 100kHz OBN a small TSSOP package. The PCM512x uses the measurements all the way to 3MHz). latest generation of TI’s advanced segment-DAC architecture to achieve excellent dynamic The PCM512x accepts industry-standard audio data performance and improved tolerance to clock jitter. formats with 16- to 32-bit data. Sample rates up to 384kHz are supported. Members of the PCM512x family integrate preset audio processing functions with programmable coefficients, allowing developers to change the characteristics of the interpolation filter, speaker EQ, dynamic range controls, and average volume control in their products. Table 1. Differences Between PCM512x Devices Part Number Dynamic Range SNR THD PCM5122 112dB 112dB –93dB PCM5121 106dB 106dB –92dB 2 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Links: PCM5121 PCM5122 |
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