Analog Devices EVAL-SSM3525Z User Manual
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Analog Devices EVAL-SSM3525Z User Manual

Analog Devices EVAL-SSM3525Z User Manual

Evaluating the ssm3525 30 w, filterless, class-d, output sensing audio amplifier
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Evaluating the
SSM3525

FEATURES

15.3 W into 4 Ω at 12 V with a 1% THD + N

EVALUATION KIT CONTENTS

USBi USB interface board
USB cable
EVAL-SSM3525Z evaluation board

DOCUMENTS NEEDED

SSM3525
data sheet
EVAL-SSM3525Z user guide
DLL for
SigmaStudio

GENERAL DESCRIPTION

The EVAL-SSM3525Z is an evaluation board for the SSM3525,
which is an integrated mono 30 W, high efficiency, stereo Class-D
audio amplifier with digital input. The application circuit requires a
few external components and can operate from a single 4.5 V to
17 V supply. It is capable of delivering 15.3 W of continuous output
power into a 4 Ω load from a 12 V power supply, with <1% total
harmonic distortion plus noise (THD + N).
The
SSM3525
features a high efficiency, low noise modulation
scheme that requires no external inductor/capacitor (LC) output
filters. This scheme continues to provide high efficiency even at
low output power.
The
SSM3525
operates with 92.1% efficiency at 9 W into an 8 Ω
load, and it has a typical output noise voltage of 37.5 µV rms,
A weighted.
This user guide describes how to configure and use the EVAL-
SSM3525Z evaluation board. Read this user guide in conjunction
with the
SSM3525
data sheet, which provides specifications,
internal block diagrams, register map, and application guidance
for the amplifier IC.
Figure 1 shows the top view of the evaluation board, and Figure 2
shows the bottom view of the evaluation board.
30 W, Filterless, Class-D, Output Sensing Audio Amplifier
Rev. 0 | Page 1 of 16
EVAL-SSM3525Z

EVALUATION BOARD PHOTOGRAPHS

Figure 1.
SSM3525
Evaluation Board Top View
Figure 2.
SSM3525
Evaluation Board Bottom View
User Guide
UG-1183

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Summary of Contents for Analog Devices EVAL-SSM3525Z

  • Page 1: Features

    EVAL-SSM3525Z user guide DLL for SigmaStudio GENERAL DESCRIPTION The EVAL-SSM3525Z is an evaluation board for the SSM3525, which is an integrated mono 30 W, high efficiency, stereo Class-D Figure 1. SSM3525 Evaluation Board Top View audio amplifier with digital input. The application circuit requires a few external components and can operate from a single 4.5 V to...

  • Page 2: Table Of Contents

    UG-1183 EVAL-SSM3525Z User Guide TABLE OF CONTENTS Features ....................1 Power Supply Configuration............4 Evaluation Kit Contents ..............1 Edge Mode..................4 Documents Needed ................1 Component Selection ..............4 General Description ................. 1 Getting Started ...................5 Evaluation Board Photographs ............1 Suggested System Level and Audio Tests ........5 Revision History ................

  • Page 3: Setting Up The Hardware

    I S using an on-board digital audio and J25). The JP9 is used for setting the pull-up or pull-down to receiver, U6. The EVAL-SSM3525Z can also accept a SoundWire® the IO and GND voltages on the printed circuit board (PCB), interface.

  • Page 4: Power Supply Configuration

    5 A rating supply is recommended if using 4 Ω speakers and 12 V. controls the edge rate of the switching. To enable low electro- The EVAL-SSM3525Z has an option to generate the 5 V (AVDD), magnetic interference (EMI) mode, set Bit 2 of Register 0x05 to 1.

  • Page 5: Getting Started

    Copy the provided SSM3525 DLL file to the C:\Program in the Device ID 2 field, and the die revision number files\Analog Devices folder on your PC. appears in the Revision field. See Figure 5. After installing the SigmaStudio software, the SigmaStudio 14.

  • Page 6: Evaluation Board Schematics And Artwork

    BCLK_3525 BCLK_3525 SDATAI_3525 SDATAI_3525 SDATAO_3525 SDATAO_3525 SHEET-3 SHEET-2 POWER_SUPPLY PVDD 4.5V TO 17V PVDD INPUT IOVDD IOVDD_EXT +5V_EXT +3V3 +3V3_EXT EXT SUPPLY SHEET-4 Figure 6. Schematic of the EVAL-SSM3525Z Evaluation Board Block Diagram Rev. 0 | Page 6 of 16...
  • Page 7 SDATAO_3525 SDATAO OUT+ 49.9Ω 10pF 10pF 10pF 10pF OUT+ SCL_3525 SSM3525 SDA_3525 OUT– OUT– BST– OUT– SCL_3525 ADDR ADDR SDA_3525 IOVDD ADDR 47kΩ Figure 7. Schematic of the EVAL-SSM3525Z Evaluation Board SSM3525 Section Rev. 0 | Page 7 of 16...
  • Page 8 UG-1183 EVAL-SSM3525Z User Guide Figure 8. Schematic of the EVAL-SSM3525Z Evaluation Board I C Digital Input Section Rev. 0 | Page 8 of 16...
  • Page 9 EVAL-SSM3525Z User Guide UG-1183 Figure 9. Schematic of the EVAL-SSM3525Z Evaluation Board Power Supply Section Rev. 0 | Page 9 of 16...
  • Page 10 UG-1183 EVAL-SSM3525Z User Guide OUT– OUT– OUTPUT OUT+ OUT+ Figure 10. Schematic of the EVAL-SSM3525Z Evaluation Board Output Section USBi OR AARDVARK I C INTERFACE +3.3V C/SA MODE SELECT DOUBLE PULL, DOUBLE THROW SLIDE USB_SCL 0.10µF USB_IO SCL_3525 SA_SCL USB_SDA 2.43kΩ...
  • Page 11 EVAL-SSM3525Z User Guide UG-1183 Figure 13. EVAL-SSM3525Z Evaluation Board Second Layer Copper Figure 14. EVAL-SSM3525Z Evaluation Board Third Layer Copper Rev. 0 | Page 11 of 16...
  • Page 12 UG-1183 EVAL-SSM3525Z User Guide Figure 15. EVAL-SSM3525Z Evaluation Board Bottom Layer Copper Figure 16. EVAL-SSM3525Z Evaluation Board Top Silkscreen Rev. 0 | Page 12 of 16...
  • Page 13 EVAL-SSM3525Z User Guide UG-1183 Figure 17. EVAL-SSM3525Z Evaluation Board Bottom Silkscreen Rev. 0 | Page 13 of 16...

  • Page 14: Ordering Information

    UG-1183 EVAL-SSM3525Z User Guide ORDERING INFORMATION BILL OF MATERIALS Table 2. Qty. Reference Designator Description Supplier Part No. Board Evaluation board EVAL-SSSM3525Z, 4-layer, 4" × 3" C1, C2 Multilayer ceramic capacitors, 220 pF, Murata Electronics GRM1555C1H221JA01D 50 V, NP0 (0402) North America (ENA) Multilayer ceramic capacitor, 1 µF, 25 V,...
  • Page 15 15 Mbps fiber optic receiving module with Toshiba TORX147L(FT) shutter High accuracy, ultralow IQ, 500 mA, any Analog Devices, Inc. capacitor low dropout regulator Fixed 5 V output, 20 V input, 300 mA, low Analog Devices ADP7102ACPZ-5.0 noise, complementary metal oxide...
  • Page 16 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.
  • Page 17 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. EVAL-SSM3525Z...

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