PCM5100APWR Audio Power Amplifier IC Audio D/A Converter ICs 2VRMS DirectPath 100 dB Audio Stereo DAC

1 Features

• Ultra Low Out-of-Band Noise

• Integrated High-Performance Audio PLL with BCK

  Reference to Generate SCK Internally

• Direct Line Level 2.1-VRMS 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

2 Applications

• A/V Receivers, DVD, BD Players

• Automotive Infotainment and Telematics

• HDTV Receivers

• Aftermarket Automotive Amplifiers

   

3 Description

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 DirectpathTM charge-pump technology, the PCM510xA devices provide 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 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).

Table 1. Device Information