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The PCM4104PFBT is a high-performance, four-channel digital-to-analogue (D/A) converter designed specifically for professional audio applications. The PCM4104PFBT supports 16 to 24-bit linear PCM input data with a maximum sampling rate of 216 kHz. The PCM4104PFBT consumes less power than most comparable stereo audio D/A converters, making it an ideal choice for high-channel-count applications, as it reduces the overall power budget required for the D/A conversion subsystem.

The PCM4104PFBT employs a delta-sigma architecture, combining a high-performance multi-stage modulator with a switched-capacitor output filter. This architecture achieves lower out-of-band noise and high tolerance to system clock phase jitter. Each channel provides differential voltage outputs, suitable for high-performance audio applications. The differential outputs can be easily converted to single-ended outputs using external operational amplifier ICs.

The PCM4104PFBT includes a flexible audio serial port interface supporting standard and time-division multiplexing (TDM) formats. Support for TDM formats simplifies interfacing with DSP serial ports and enables cascading connections between two PCM4104PFBT devices. Additionally, the PCM4104PFBT offers two configuration modes: standalone mode and software-controlled mode. Stand-alone mode provides dedicated control pins to configure a subset of the PCM4104PFBT's available features, while software mode accesses internal control registers via the serial peripheral interface (SPI) port to access the full feature set.

The PCM4104PFBT is powered by a +5V analogue power supply and a +3.3V digital power supply. Digital I/O is compatible with the +3.3V logic family. The PCM4104PFBT is available in a TQFP-48 package.

PCM4104PFBT Features and Specifications

Four high-performance, multi-stage Delta-Sigma analogue-to-digital converters

Differential voltage output

Full-scale output (differential): 6.15VPP

Supports sampling frequencies up to 216kHz

Typical dynamic performance (24-bit data)

Dynamic range (A-weighted): 118dB

Total harmonic distortion plus noise (THD+N): –100dB

Linear phase, 8x oversampling digital interpolation filter

Digital de-emphasis filter for 32kHz, 44.1kHz, and 48kHz sampling rates

Soft mute function

Full-channel mute via mute input pin

Channel-by-channel mute supported in software mode

Digital attenuation (software mode only)

Attenuation range: 0dB to –119.5dB

256 steps, 0.5dB per step

Output phase inversion (software mode only)

Zero data mute (software mode only)

Audio serial port

Supports left-aligned, right-aligned, I2S, and TDM data formats

Accepts 16-bit, 18-bit, 20-bit, and 24-bit two's complement PCM audio data

Independent mode and software-controlled configuration mode

Four-wire serial peripheral interface (SPI™) port provides access to control registers in software mode

Power supply: +5V analogue, +3.3V digital  

Power consumption  

Typical value 203mW, sampling rate fS=48kHz  

Typical value 220mW, sampling rate fS=96kHz  

Typical value 236mW, sampling rate fS=192kHz  

Standby mode  

Small 48-pin TQFP package

PCM4104PFBT Product Applications

Digital mixing consoles

Digital audio workstations

Digital audio effects processors

Broadcast studio equipment

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