DAC 4-CH Delta-Sigma 24-bit 48-Pin TQFP T/R

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.

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