1 Features
1• Register-Selectable Audio-Processing Functions
up to 48-kHz fS
– Dynamic Range Control (DRC)
– Equalization (EQ)
– Filtering
• DAC Functionality to 384-kHz fS
• Market-Leading Low Out-of-Band Noise
• Selectable Digital-Filter Latency and Performance
• No DC-Blocking Capacitors Required
• Integrated Negative Charge Pump
• Intelligent Muting System; Soft Up or Down Ramp
and Analog Mute for 120-dB Mute SNR
• Integrated High-Performance Audio PLL With
BCK Reference to Generate SCK Internally
• Accepts 16-, 20-, 24-, and 32-Bit Audio Data
• PCM Data Formats: I2S, Left-Justified, Right-
Justified, TDM / DSP
• SPI or I2C Control
• Software or Hardware Configuration
• Automatic Power-Save Mode When LRCK and
BCK are Deactivated
• 1.8-V or 3.3-V Failsafe LVCMOS Digital Inputs
• Single Supply Operation:
– 3.3-V Analog, 1.8-V or 3.3-V Digital
• Integrated Power-On Reset
• Small28-Pin Package

2 Applications
• A/V Receivers
• DVD, BD Players
• HDTV Receivers
• Applications Requiring 2-VRMS Audio Output

3 Description
The PCM512x devices are a family of monolithic
CMOS-integrated circuits that include a stereo digitalto-
analog converter and additional support circuitry in
a small TSSOP package. The PCM512x uses the
latest generation of TI’s advanced segment-DAC
architecture to achieve excellent dynamic
performance and improved tolerance to clock jitter.
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.
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 chargepump-
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.