PCM1798 Datasheet, PDF (1/30 Pages) Texas Instruments – 24-BIT, 192-KHZ SAMPLING ADVANCED SEGMENT, AUDIO STEREO DIGITAL TO ANALOG CONVERTER

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PCM1798
SLES102B – DECEMBER 2003 – REVISED MARCH 2015
PCM1798 24-Bit, 192-kHz Sampling, Advanced Segment,
Audio Stereo Digital-to-Analog Converter
1 Features
•1 24-Bit Resolution
• Analog Performance:
– Dynamic Range: 123 dB
– THD+N: 0.0005%
• Differential Current Output: 4 mAp-p
• 8× Oversampling Digital Filter:
– Stop-Band Attenuation: –98 dB
– Pass-Band Ripple: ±0.0002 dB
• Sampling Frequency: 10 kHz to 200 kHz
• System Clock: 128, 192, 256, 384, 512, or 768 f_S
With Autodetect
• Accepts 16- and 24-Bit Audio Data
• PCM Data Formats: Standard, I2S, and Left-
Justified
• Interface Available for Optional External Digital
Filter or DSP
• Digital De-Emphasis
• Digital Filter Rolloff: Sharp or Slow
• Soft Mute
• Zero Flag
• Dual-Supply Operation: 5-V Analog, 3.3-V Digital
• 5-V Tolerant Digital Inputs
• Small 28-Lead SSOP Package
• Pin Assignment Compatible With PCM1794
2 Applications
• A/V Receivers
• DVD Players
• Musical Instruments
• HDTV Receivers
• Car Audio Systems
• Digital Multitrack Recorders
• Other Applications Requiring 24-Bit Audio
3 Description
The PCM1798 device is a monolithic CMOS
integrated circuit that includes stereo digital-to-analog
converters (DACs) and support circuitry in a small 28-
lead SSOP package. The data converters use TI’s
advanced segment DAC architecture to achieve
excellent dynamic performance and improved
tolerance to clock jitter. The PCM1798 device
provides balanced current outputs, allowing the user
to optimize analog performance externally. Sampling
rates up to 200 kHz are supported.
PART NUMBER
PCM1798
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
SSOP (28)
10.20 mm × 5.30 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
LRCK
BCK
DATA
MUTE
FMT1
FMT0
MONO
CHSL
DEM
RST
ZERO
Audio
Data Input
I/F
Function
Control
I/F
´8
Oversampling
Digital
Filter
and
Function
Control
Advanced
Segment
DAC
Modulator
IOUT L–
Current
Segment
DAC
IOUTL+
Bias
and
Vref
VCOML
IREF
VCOMR
IOUT R–
Current
Segment
DAC
IOUT R+
Zero
Detect
System
Clock
Manager
Power Supply
VOUT L
I/V and Filter
VOUT R
I/V and Filter
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.