The PCM512x devices are a family of monolithic CMOS-integrated
circuits that include a stereo digital-to-analog converter and additional support circuitry in a
small TSSOP package. The PCM512x uses the latest generation of TIs advanced
segment-DAC architecture to achieve excellent dynamic performance and improved tolerance to clock
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
The PCM512x provides 2.1-VRMS ground-centered
outputs, allowing designers to eliminate DC-blocking capacitors on the output, as well as external
muting circuits traditionally associated with single supply line drivers.
The integrated line driver surpasses all other charge-pump-based line drivers by
supporting loads down to 1 kΩ. By supporting loads down to 1 kΩ, the PCM512x
can essentially drive up to 10 products in parallel (LCD TV, DVDR, AV receivers, and so forth).
The integrated PLL on the device removes the requirement for a system clock (commonly
known as master clock), allowing a 3-wire I2S connection, along with
reducing system EMI.
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