Burr-Brown Audio
www.ti.com..............................................................................................................................................................................................
SBAS451 – OCTOBER 2008
24-Bit, 192-kHz Sampling, Enhanced Multi-Level
ΔΣ,
Stereo, Audio Digital-to-Analog Converter
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FEATURES
•
Enhanced Multi-Level Delta-Sigma DAC:
– High Performance: Differential, f
S
= 48 kHz
– THD+N: –94 dB
– SNR: 113 dB
– Dynamic Range: 113 dB
– Sampling Rate: 8 kHz to 192 kHz
– System Clock: 128 f
S
, 192 f
S
, 256 f
S
, 384 f
S
,
512 f
S
, 768 f
S
, 1152 f
S
– Differential Voltage Output: 8 V
PP
– Analog Low-Pass Filter Included
– 4x/8x Oversampling Digital Filter:
– Passband Ripple: ±0.0018 dB
– Stop Band Attenuation: –75 dB
– Zero Flags (16-/20-/24-Bits)
•
Flexible Audio Interface:
– I/F Format: I
2
S™, Left-/Right-Justified, DSP
– Data Length: 16, 20, 24, 32 Bits
•
Flexible Mode Control:
– 3-Wire SPI™, 2-Wire I
2
C™-Compatible
Serial Control Interface, or
Hardware Control
– Connect Up To 4 Devices on One SPI Bus
•
Multi Functions via SPI or I
2
C I/F:
– Audio I/F Format Select: I
2
S, Left-Justified,
Right-Justified, DSP
– Digital Attenuation and Soft Mute
– Digital De-Emphasis: 32 kHz, 44.1 kHz,
48 kHz
– Data Polarity Control
– Power-Save Mode
•
Multi Functions via Hardware Control:
– Audio I/F Format Select: I
2
S, Left-Justified
– Digital De-Emphasis Filter: 44.1 kHz
•
Analog Mute by Clock Halt Detection
2345
•
•
•
•
External Reset Pin
Power Supplies:
– 5 V for Analog and 3.3 V for Digital
Package: TSSOP-24
Operating Temperature Range:
– –40°C to +85°C
APPLICATIONS
•
•
•
•
•
•
Blu-ray Disc™ Players
DVD Players
AV Receivers
Home Theaters
Car Audio External Amplifiers
Car Audio AVN Applications
DESCRIPTION
The PCM1789 is a high-performance, single-chip,
24-bit, stereo, audio digital-to-analog converter (DAC)
with differential outputs. The two-channel, 24-bit DAC
employs an enhanced multi-level, delta-sigma (ΔΣ)
modulator, and supports 8 kHz to 192 kHz sampling
rates and a 16-/20-/24-/32-bit width digital audio input
word on the audio interface. The audio interface of
PCM1789 supports a 24-bit, DSP format in addition
to I
2
S, left-justified, and right-justified formats.
The PCM1789 can be controlled through a three-wire,
SPI-compatible or two-wire, I
2
C-compatible serial
interface in software, which provides access to all
functions including digital attenuation, soft mute,
de-emphasis, and so forth. Also, hardware control
mode provides two user-programmable functions
through two control pins. The PCM1789 is available
in a 24-pin TSSOP package.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Blu-ray Disc is a trademark of Blu-ray Disc Association.
SPI is a trademark of Motorola, Inc.
I2S, I2C are trademarks of NXP Semiconductors.
All other trademarks are the property of their respective owners.
Copyright © 2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TI [ TEXAS INSTRUMENTS ]
