Texas Instruments PCM2705 Evaluation Module PCM2705EVM-U PCM2705EVM-U 数据表
产品代码
PCM2705EVM-U
User
'
s Guide
SLEU114
–
May 2011
PCM270xEVM-U
This user's guide contains information on the setup, operation, and construction of the PCM270xEVM-U,
an evaluation module (EVM) for digital-to-analog converters (DACs) PCM2704 and PCM2705.
an evaluation module (EVM) for digital-to-analog converters (DACs) PCM2704 and PCM2705.
Contents
1
Description
...................................................................................................................
1.1
Related Documentation From Texas Instruments
.............................................................
1.2
Block Diagram
......................................................................................................
1.3
Basic Operating Connections
....................................................................................
2
Schematic, BOM, and Printed-Circuit Board
............................................................................
2.1
PCM270xEVM-U Schematic
......................................................................................
2.2
PCM270xEVM-U Parts List (BOM)
..............................................................................
2.3
PCM270xEVM-U Printed-Circuit Board
.........................................................................
List of Figures
1
PCM270xEVM-U Block Diagram
..........................................................................................
2
PCM270xEVM-U Circuit Diagram
........................................................................................
3
PCM270xEVM-U Silkscreen
...............................................................................................
4
PCM270xEVM-U
—
Top View
..............................................................................................
5
PCM270xEVM-U
—
Bottom View
..........................................................................................
List of Tables
1
Bill of Materials
..............................................................................................................
1
Description
The PCM270xEVM-U is an evaluation board for the USB interface DACs PCM2704 (DEM-PCM2704) and
PCM2705 (DEM-PCM2705).
PCM2705 (DEM-PCM2705).
A USB connector is mounted on the PCM270xEVM-U. This connector allows a customer to evaluate DAC
performance by connecting a USB interface to it.
performance by connecting a USB interface to it.
By the use of jumper settings on the board, the PCM270xEVM-U can be operated either from USB bus
power or from an external 5-V power supply.
power or from an external 5-V power supply.
The PCM270xEVM-U outputs a stereo audio signal for headphones at stereo minijack CN2 (PD = 12 mW
at R
at R
L
= 32
Ω
), and an S/PDIF digital interface output at optical Toslink
™
connector U4.
The PCM270xEVM-U is fully compliant with the USB 1.1 specification with full-speed transceiver format.
1.1
Related Documentation From Texas Instruments
PCM2704, PCM2705, PCM2706, PCM2707 Stereo Audio DAC With USB Interface, Single-Ended
Headphone Output and S/PDIF Output data sheet (
Headphone Output and S/PDIF Output data sheet (
Toslink is a trademark of Kabushiki Kaisha Toshiba DBA Toshiba Corporation.
All other trademarks are the property of their respective owners.
All other trademarks are the property of their respective owners.
1
SLEU114
–
May 2011
PCM270xEVM-U
Copyright
©
2011, Texas Instruments Incorporated