PCM5101A - 2VRMS DirectPath™, 106dB Audio Stereo DAC with 32-bit, 384kHz PCM Interface

The PCM510xA 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 PCM510xA devices use the latest generation of TI’s advanced segment-DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter.

Using Directpath™ charge-pump technology, the PCM510xA devices provide 2.1-V_RMS 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 per pin.

The integrated PLL on the device removes the requirement for a system clock (commonly known as master clock), allowing a 3-wire I²S connection and reducing system EMI.

Intelligent clock error and PowerSense undervoltage protection utilizes a two-level mute system for pop-free performance.

Compared with many conventional switched capacitor DAC architectures, the PCM510xA family offers up to 20 dB lower out-of-band noise, reducing EMI and aliasing in downstream amplifiers/ADCs, measured from the traditional 100-kHz OBN measurements to 3 MHz).

• Ultra Low Out-of-Band Noise
• Integrated High-Performance Audio PLL with BCK
  Reference to Generate SCK Internally
• Direct Line Level 2.1-V_RMS Output
• No DC Blocking Capacitors Required
• Line Level Output Down to 1KΩ
• Intelligent Muting System; Soft Up or Down Ramp
  and Analog Mute For 120-dB Mute SNR
• Accepts 16-, 24-, and 32-Bit Audio Data
• PCM Data Formats: I²S, Left-Justified
• Automatic Power-Save Mode When LRCK And
  BCK Are Deactivated
• 1.8 V or 3.3 V Failsafe LVCMOS Digital Inputs
• Simple Configuration Using Hardware Pins
• Single-Supply Operation: 14
  • 3.3 V Analog, 1.8 V or 3.3 V Digital
• Qualified in Accordance with AEC-Q100