PCM4104 - 118dB SNR 4-Channel Audio DAC

The PCM4104 is a high-performance, four-channel digital-to-analog (D/A) converter designed for use in professional audio applications. The PCM4104 supports 16- to 24-bit linear PCM input data, with sampling frequencies up to 216kHz. The PCM4104 features lower power than most comparable stereo audio D/A converters, making it ideal for use in high channel count applications by lowering the overall power budget required for D/A conversion sub-system.

The PCM4104 features delta-sigma architecture, employing a high-performance multi-level modulator combined with a switched capacitor output filter. This architecture yields lower out-of-band noise and a high tolerance to system clock phase jitter. Differential voltage outputs are provided for each channel and are well-suited to high-performance audio applications. The differential outputs are easily converted to a single-ended output using an external op amp IC.

The PCM4104 includes a flexible audio serial port interface, which supports standard and time division multiplexed (TDM) formats. Support for TDM formats simplifies interfacing to DSP serial ports, while supporting a cascade connection for two PCM4104 devices. In addition, the PCM4104 offers two configuration modes: Standalone and Software-Controlled. The Standalone mode provides dedicated control pins for configuring a subset of the available PCM4104 functions, while Software mode utilizes a serial peripheral interface (SPI) port for accessing the complete feature set via internal control registers.

The PCM4104 operates from a +5V analog power supply and a +3.3V digital power supply. The digital I/O is compatible with +3.3V logic families. The PCM4104 is available in a TQFP-48 package.

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• Four High-Performance, Multi-Level, Delta-Sigma Digital-to-Analog Converters
• Differential Voltage Output
  • Full-Scale Output (Differential): 6.15V_PP
• Supports Sampling Frequencies up to 216kHz
• Typical Dynamic Performance (24-Bit Data)
  • Dynamic Range (A-Weighted): 118dB
  • THD+N: –100dB
• Linear Phase, 8x Oversampling Digital Interpolation Filter
• Digital De-Emphasis Filters for 32kHz, 44.1kHz, and 48kHz Sampling Rates
• Soft Mute Function
  • All-Channel Mute via the MUTE Input Pin
  • Per-Channel Mute Available in Software Mode
• Digital Attenuation (Software Mode Only)
  • Attenuation Range: 0dB to –119.5dB
  • 256 Steps with 0.5dB per Step
• Output Phase Inversion (Software Mode Only)
• Zero Data Mute (Software Mode Only)
• Audio Serial Port
  • Supports Left-Justified, Right-Justified, I²S, and TDM Data Formats
  • Accepts 16-, 18-, 20, and 24-Bit Two’s Complement PCM Audio Data
• Standalone and Software-Controlled Configuration Modes
• Four-Wire Serial Peripheral Interface (SPI™) Port Provides Control Register Access in Software Mode
• Power Supplies: +5V Analog, +3.3V Digital
• Power Dissipation
  • 203mW typical with f_S = 48kHz
  • 220mW typical with f_S = 96kHz
  • 236mW typical with f_S = 192kHz
• Power-Down Modes
• Small 48-Lead TQFP Package
• APPLICATIONS
  • Digital Mixing Consoles
  • Digital Audio Workstations
  • Digital Audio Effects Processors
  • Broadcast Studio Equipment
  • Surround-Sound Processors
  • High-End A/V Receivers

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