PCM1794A Digital-to-Analog Converter Datasheet

PCM1794A Datasheet, PDF, Equivalent


Part Number

PCM1794A

Description

Audio Stereo Digital-to-Analog Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download PCM1794A Datasheet


PCM1794A
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PCM1794A
SLES117B – AUGUST 2004 – REVISED DECEMBER 2015
PCM1794A 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo
Digital-to-Analog Converter
1 Features
1 24-Bit Resolution
• Analog Performance:
– Dynamic Range:
– 132 dB (9 V RMS, Mono)
– 129 dB (4.5 V RMS, Stereo)
– 127 dB (2 V RMS, Stereo)
– THD+N: 0.0004%
• Differential Current Output: 7.8 mA p-p
• 8× Oversampling Digital Filter:
– Stop-Band Attenuation: –130 dB
– Pass-Band Ripple: ±0.00001 dB
• Sampling Frequency: 10 kHz to 200 kHz
• System Clock: 128, 192, 256, 384, 512, or 768 fS
With Autodetect
• Accepts 16-Bit and 24-Bit Audio Data
• PCM Data Formats: Standard, I2S, and Left-
Justified
• Optional Interface Available to 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-Pin SSOP Package
2 Applications
• A/V Receivers
• DVD Players
• Musical Instruments
• Car Audio Systems
• Other Applications Requiring 24-Bit Audio
3 Description
The PCM1794A device is a monolithic, CMOS-
integrated circuit that includes stereo digital-to-analog
converters (DACs) and support circuitry in a small 28-
pin SSOP package. The data converters use TI’s
advanced segment DAC architecture to achieve
excellent dynamic performance and improved
tolerance to clock jitter. The PCM1794A device
provides balanced current outputs, allowing the user
to optimize analog performance externally. Sampling
rates up to 200 kHz are supported.
PART NUMBER
PCM1794A
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.
Simplified Application Diagram
DSP
Data
LRCK
BCK
MCLK
PCM1794A
I/V Stage
I/V Stage
Differential Output or
Differential to SE
Stage
L Analog Out
R Analog Out
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.

PCM1794A
PCM1794A
SLES117B – AUGUST 2004 – REVISED DECEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 7
6.7 Typical Characteristics .............................................. 9
7 Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 13
7.4 Device Functional Modes........................................ 18
8 Application and Implementation ........................ 19
8.1 Application Information............................................ 19
8.2 Typical Application ................................................. 25
9 Power Supply Recommendations...................... 26
10 Layout................................................................... 26
10.1 Layout Guidelines ................................................. 26
10.2 Layout Example .................................................... 27
11 Device and Documentation Support ................. 28
11.1 Documentation Support ........................................ 28
11.2 Community Resources.......................................... 28
11.3 Trademarks ........................................................... 28
11.4 Electrostatic Discharge Caution ............................ 28
11.5 Glossary ................................................................ 28
12 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (November 2006) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
2 Submit Documentation Feedback
Product Folder Links: PCM1794A
Copyright © 2004–2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCM1794A SLES117B – AUGUST 2004 – REVISED DECEMBER 2015 PCM1794 A 24-Bit, 192-kHz Sampling, Advanced Se gment, Audio Stereo Digital-to-Analog C onverter 1 Features •1 24-Bit Resolu tion • Analog Performance: – Dynami c Range: – 132 dB (9 V RMS, Mono) – 129 dB (4.5 V RMS, Stereo) – 127 dB (2 V RMS, Stereo) – THD+N: 0.0004% Differential Current Output: 7.8 mA p -p • 8× Oversampling Digital Filter: – Stop-Band Attenuation: –130 dB Pass-Band Ripple: ±0.00001 dB • S ampling Frequency: 10 kHz to 200 kHz System Clock: 128, 192, 256, 384, 512 , or 768 fS With Autodetect • Accepts 16-Bit and 24-Bit Audio Data • PCM D ata Formats: Standard, I2S, and LeftJus tified • Optional Interface Available to 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-Pin SSO.
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