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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
FEATURES
Accepts either differential or single-ended inputs
Full featured evaluation board for the
PCB footprint for optional EMI filter
Includes USB hardware interface for plug-and-play
operation
Microsoft Windows®-based evaluation software with
simple graphical user interface
EQUIPMENT NEEDED
Audio source with ⅛" male stereo plug or 0.100" header
Power supply (5.0 V, 2.0 A recommended)
EVAL-SSM2380Z
evaluation board
PC running Windows XP or later; USB 2.0 port required
Stereo speakers or other load
DOCUMENTS NEEDED
SSM2380
data sheet
SOFTWARE NEEDED
SSM2380
evaluation software
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Evaluating the
SSM2380
SSM2380
TYPICAL I
2
C INTERFACE CONFIGURATION
Figure 1.
EVAL-SSM2380Z
Rev. 0 | Page 1 of 20
Evaluation Board User Guide
Audio Amplifier
GENERAL DESCRIPTION
The
SSM2380
evaluation board is a complete solution for
driving two loudspeakers. It includes the
IC and the additional components needed to connect the I
bus to a personal computer using a universal serial bus (USB)
connection. Figure 1 shows the evaluation board in a simple
configuration with USB and power and audio input connections.
The
SSM2380
features an I
2
settings. Using the I
C control interface, the gain of the
2
SSM2380
can be selected from any of 47 values between
1 dB and 24 dB. Other features available when using the I
interface include independent left/right channel shutdown,
EMI emission control modes, automatic level control (ALC),
and stereo-to-mono input mixing.
This user guide describes how to use the
test the features of the
SSM2380
the hardware and software of the
including detailed schematics and PCB layout artwork.
The
SSM2380
data sheet, available at
provides detailed information about the specifications, internal
block diagrams, and application guidance for the amplifier IC.
The
SSM2380
evaluation software can be downloaded from
www.analog.com/SSM2380. Click Evaluation Boards & Kits
and choose the appropriate Windows version (32-bit or 64-bit).
Evaluation Board
UG-248
SSM2380
amplifier
C interface with many useful
EVAL-SSM2380Z
stereo amplifier. It describes
SSM2380
evaluation board,
www.analog.com/SSM2380,
C
2
C
2
to
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Table of Contents
Related Manuals for Analog Devices SSM2380
Summary of Contents for Analog Devices SSM2380
-
Page 1: Features
IC. SSM2380 evaluation software can be downloaded from www.analog.com/SSM2380. Click Evaluation Boards & Kits and choose the appropriate Windows version (32-bit or 64-bit). TYPICAL I C INTERFACE CONFIGURATION Figure 1. -
Page 2: Table Of Contents
Gain Select Mode ................5 Evaluation Board Schematics and Artwork ........ 14 Evaluation Board Software Quick Start Procedures ....6 Ordering Information ..............18 SSM2380 Control Software Setup ..........6 Bill of Materials ................18 REVISION HISTORY 9/11—Revision 0: Initial Version... -
Page 3: Evaluation Board Hardware
SSM2380. See the Evaluation Board Software JP5 (INL+ and INL−) for left channel audio and the two center Quick Start Procedures section to get started. -
Page 4: Leds
EEPROM, it may be necessary to power down (or disconnect) EEPROM any other devices from the I C bus, including the SSM2380. The USBi has an EEPROM on the I C bus at Address 0x51, which In this case, remove the external 5 V supply while the USB... -
Page 5: Operating Modes
Evaluation Board User Guide UG-248 OPERATING MODES SSM2380 has three operating modes: I C control mode, ALC mode, and gain select mode. These modes are described in detail in the SSM2380 data sheet. On the evaluation board, the 3-pin JP11 jumper allows the user to change between the available operating modes. -
Page 6: Evaluation Board Software Quick Start Procedures
For quick access to this software, the installer creates a downloads it if .NET Version 2.0 is not already installed. shortcut from the SSM2380.exe file to the desktop. To install the control software, use the following steps: 10. If all steps were properly followed, at the top of the... - Page 7 Evaluation Board User Guide UG-248 Figure 9. SSM2380 Evaluation Software Rev. 0 | Page 7 of 20...
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Page 8: Ssm2380 Gui Functional Blocks
Simply click the red RESET button at the bottom-left corner of the software window (see Figure 9). INPUT CONTROL This section controls the left and right gain control operation of SSM2380. Figure 11. Output Control Section of SSM2380 ALC Control 1 (Register R3) Figure 10. -
Page 9: Auxiliary Functions
This feature is only active if the fault recovery options Shutdown (Register R5) (overcurrent autorecovery and overtemperature autorecovery) are enabled. To enable the SSM2380, simply click ON for left and/or right channels. Rev. 0 | Page 9 of 20... -
Page 10: Quick Set Buttons
Simply type the desired word in hexadecimal format in the desired register write window. Click the Write button when ready to send this data to the SSM2380. The associated subsection options from the main GUI section Figure 15. USB Power Control are also updated. -
Page 11: Usb-I C Interface
To simplify bench evaluation, an interface based on the USBi zero inverted (NRZI) line code. These signal lines connect adapter is included on the SSM2380 evaluation board. This directly to pins on the Cypress USB interface. eliminates the need for a separate interface board and 10-pin ribbon cable;... -
Page 12: Passive Component Selection
20.1 Because R varies with amplifier gain value from 7.3 kΩ 011001 13.5 21.1 to 55 kΩ over the entire gain range of the SSM2380, this 011000 13.0 22.1 calculation must be performed carefully to ensure that the 010111 12.5 23.1... -
Page 13: Output Ferrite Beads (B1 To B4)
Evaluation Board User Guide UG-248 OUTPUT FERRITE BEADS (B1 TO B4) multilayer ceramic capacitors that are made of X7R or C0G (NP0) materials. Note that the capacitors can be used in pairs: a The output beads, B1 to B4, are suggested components for capacitor with small capacitance (up to 100 pF) plus a capacitor filtering out the EMI caused at the switching output nodes. -
Page 14: Evaluation Board Schematics And Artwork
UG-248 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 17. USB Interface Schematic Rev. 0 | Page 14 of 20... - Page 15 L Q M 3 1 P N R 4 7 M 0 0 H D R 1 X 3 C 2 8 J P 1 0 0 .1 u F mble H D R 1 X 3 Figure 18. SSM2380 Schematic Rev. 0 | Page 15 of 20...
- Page 16 UG-248 Evaluation Board User Guide Figure 19. Evaluation Board Layout, Primary Side (Layer 1) Figure 20. Evaluation Board Layout, Ground Plane (Layer 2) Rev. 0 | Page 16 of 20...
- Page 17 Evaluation Board User Guide UG-248 Figure 21. Evaluation Board Layout, Power Plane (Layer 3) Figure 22. Evaluation Board Layout, Secondary Side (Layer 4) Rev. 0 | Page 17 of 20...
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Page 18: Ordering Information
RC0805FR-074K99L Switch TACT SMD, W/O GND, 160 g Omron Electronics Inc B3SN-3012P IC REG LDO, 150 mA, 3.3 V, TSOT-23-5 Analog Devices Inc ADP1711AUJZ-3.3-R7 IC REG LDO, 150 mA, 1.8 V, TSOT-23-5 Analog Devices Inc ADP1711AUJZ-1.8-R7 IC EEPROM, 256 Kb, 400 kHz, 8 TSSOP... - Page 19 Evaluation Board User Guide UG-248 NOTES Rev. 0 | Page 19 of 20...
- Page 20 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.
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