PCM4108 Datasheet, PDF (1/39 Pages) Texas Instruments – HIGH-PERFORMANCE, 24-BIT, 216kHz SAMPLING, EIGHT-CHANNEL AUDIO DIGITAL-TO-ANALOG CONVERTER

PCM4108
SBAS354 − JUNE 2005
HighĆPerformance, 24ĆBit, 216kHz Sampling, EightĆChannel Audio
DigitalĆtoĆAnalog Converter
FEATURES
D Eight High-Performance, Multi-Level,
Delta-Sigma Digital-to-Analog Converters
D Differential Voltage Outputs:
− Full-Scale Output (Differential): 6.15V_PP
D Supports Sampling Frequencies up to 216kHz
D Typical Dynamic Performance (24-Bit Data):
− Dynamic Range (A-Weighted): 118dB
− THD+N: −100dB
D Linear Phase, 8x Oversampling Digital
Interpolation Filter
D Digital De-Emphasis Filters for 32kHz,
44.1kHz, and 48kHz Sampling Rates
D Soft Mute Function:
− All-Channel Mute via the MUTE Input Pin
− Per-Channel Mute Available in Software
Mode
D Digital Attenuation (Software Mode Only):
− Attenuation Range: 0dB to −119.5dB
− 256 Steps with 0.5dB per Step
D Output Phase Inversion (Software Mode Only)
D Zero Data Mute (Software Mode Only)
D Audio Serial Port:
− Supports Left-Justified, Right-Justified,
I²SE, and TDM Data Formats
− Accepts 16-, 18-, 20, and 24-Bit Two’s
Complement PCM Audio Data
D Standalone or Software-Controlled
Configuration Modes
D Five-Wire Serial Peripheral Interface (SPIE)
Port Provides Control Register Access in
Software Mode
D Power Supplies: +5V Analog, +3.3V Digital
D Power Dissipation:
− 406mW typical with f_S = 48kHz
− 440mW typical with f_S = 96kHz
− 472mW typical with f_S = 192kHz
D Power-Down Modes
D 64-Lead HTQFP Package
APPLICATIONS
D Digital Mixing Consoles
D Digital Audio Workstations
D Digital Audio Effects Processors
D Broadcast Studio Equipment
D Surround-Sound Processors
D High-End A/V Receivers
DESCRIPTION
The PCM4108 is a high-performance, eight-channel
digital-to-analog (D/A) converter designed for use in
professional audio applications. The PCM4108 supports
16- to 24-bit linear PCM input data, with sampling
frequencies up to 216kHz. The PCM4108 features lower
power consumption, 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 PCM4108 features a multi-bit delta-sigma
architecture, followed by 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 PCM4108 includes a flexible audio serial port
interface, which supports standard and time division
multiplexed (TDM) formats. In addition, the PCM4108
offers two configuration modes: Standalone and
Software-Controlled. The Standalone mode provides
dedicated control pins for configuring a subset of the
available PCM4108 functions, while Software mode
utilizes a serial peripheral interface (SPI) port for
accessing the complete feature set via internal control
registers.
The PCM4108 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 PCM4108 is
available in a 64-lead HTQFP package.
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semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCT PREVIEW information concerns products in the formative or design
phase of development. Characteristic data and other specifications are design
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products without notice.
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Copyright  2005, Texas Instruments Incorporated