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PCM4104
High-End 24-Bit, 192kHz, 4-Ch Audio DAC
SBAS291C − AUGUST 2003 − REVISED DECEMBER 2004
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FEATURES Four High-Performance, Multi-Level,
Delta-Sigma Digital-to-Analog Converters Differential Voltage Outputs
− Full-Scale Output (Differential): 6.15VPP�
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 or 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 fS = 48kHz
− 220mW typical with fS = 96kHz
− 236mW typical with fS = 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
DESCRIPTIONThe 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 consumption 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 the 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.
