Analog Devices SSM3582 User Manual

Analog Devices SSM3582 User Manual

Filterless stereo class d audio amplifier

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Evaluating the

FEATURES

2×, 31.76 W into 4 Ω at16 V, THD + N = 10%

EVALUATION KIT CONTENTS

USBi USB interface board
USB cable
EVAL-SSM3582Z evaluation board

ONLINE RESOURCES

Documents
SSM3582
data sheet or
SSM3582A
EVAL-SSM3582Z user guide
Dynamic link library (DLL) for the

GENERAL DESCRIPTION

The EVAL-SSM3582Z is the evaluation board for the
or the SSM3582A, integrated stereo, 31.76 W, high efficiency,
Class D, audio amplifiers with a digital input. This evaluation
board can be used for both the
devices.
The application circuit requires few external components and
can operate from a single 4.5 V to 16 V supply. The EVAL-
SSM3582Z is capable of delivering 14.67 W of continuous
output power to a 4 Ω load from a 12 V power supply, with
<1% THD + N, or 31.76 W into a 4 Ω load from 16 V, 10%
THD + N.
The
SSM3582
and the
SSM3582A
low noise modulation scheme that requires no external
reconstruction filter (LC) output filters. This scheme provides
high efficiency, even at low output power.
The EVAL-SSM3582Z and the
operate with 93.8% efficiency at 10 W into an 8 Ω load or 90.6%
efficiency at 18 W into 4 Ω load from a 12 V supply. The EVAL-
SSM3582Z, the SSM3582, and the
noise floor of 38.5 μV rms A weighted.
This user guide describes how to configure and use the EVAL-
SSM3582Z. Read this user guide in conjunction with the
and the
SSM3582A
data sheets, which provide specifications,
internal block diagrams, a register map, and application
guidance for the amplifiers.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
SSM3582
or the
Filterless Stereo Class D Audio Amplifier
data sheet
SigmaStudio
software
SSM3582
SSM3582
or the
SSM3582A
feature a high efficiency,
SSM3582
or the
SSM3582A
SSM3582A
have a typical
SSM3582
EVAL-SSM3582Z
SSM3582A
2×, 31.76 W, Digital Input,
Figure 1 shows the top view of the EVAL-SSM3582Z, and
Figure 2 shows the bottom view of the EVAL-SSM3582Z.

EVALUATION BOARD PHOTOGRAPHS

Figure 1. EVAL-SSM3582Z Evaluation Board, Top View
Figure 2. EVAL-SSM3582Z Evaluation Board, Bottom View
Rev. B | Page 1 of 13
User Guide
UG-934

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Summary of Contents for Analog Devices SSM3582

  • Page 1: Features

    SSM3582A operate with 93.8% efficiency at 10 W into an 8 Ω load or 90.6% efficiency at 18 W into 4 Ω load from a 12 V supply. The EVAL- SSM3582Z, the SSM3582, and the SSM3582A have a typical Figure 2. EVAL-SSM3582Z Evaluation Board, Bottom View noise floor of 38.5 μV rms A weighted.
  • Page 2: Table Of Contents

    UG-934 EVAL-SSM3582Z User Guide TABLE OF CONTENTS     Features ....................1 Power Supply Configuration ............3     Evaluation Kit Contents ..............1 Edge Mode..................4     Online Resources ................1 Mono Operation ................4     General Description ................. 1 Component Selection ..............4  ...
  • Page 3: Setting Up The Hardware

    INPUT CONFIGURATION left and right channels of an I S stream, depending on the FSYNC duty cycle: There are several ways to source audio to the SSM3582 or the  SSM3582A on the evaluation board. The EVAL-SSM3582Z can Set Switch S1 so that SCL and SDA are pulled to GND.
  • Page 4: Changes To Mono Operation Section

    Jumper JP9 must be fitted to the GND position and the J17 and J23 headers must be inserted. EDGE MODE To reduce the radiated emissions from the SSM3582 or the SSM3582A amplifier, an edge rate control mode is available. Register 0x05, Bit 3, controls the edge rate of the switching. This low electromagnetic interference (EMI) mode is enabled by default.
  • Page 5 EVAL-SSM3582Z User Guide UG-934 C CONNECTOR C PULL-UP FOR USBi SELECTOR LEFT OUTPUT 5V LDO ENABLE C/STANDALONE SELECT SWITCH PVDD IN OPTICAL IN OPTICAL/COAX SELECTOR SWITCH 5V REGULATOR ENABLE/DISABLE COAXIAL IN 1.8V REGULATOR INTERNAL/EXTERNAL SELECT 5V INTERNAL/EXTERNAL SELECT 3.3V REGULATOR ENABLE/DISABLE SERIAL INPUT 3.3V REGULATOR...
  • Page 6: Getting Started

    SigmaStudio icon appears on the desktop. Double-click the Capture window (see Figure 6). icon to open up the SigmaStudio graphical user interface. Start a new project by dragging the USBi and SSM3582 icons to the Hardware Configuration tab. Connect the USBi board to the...
  • Page 7: Evaluation Board Schematics And Artwork

    0 .2 2 µ F 0 .2 2 µ F C3 2 C3 7 0 . 1 0 µ F 1 0 µ F PVDD Figure 8. Schematic of the EVAL-SSM3582Z SSM3582 Section Rev. B | Page 7 of 13...
  • Page 8 UG-934 EVAL-SSM3582Z User Guide Figure 9. Schematic of the EVAL-SSM3582Z I C Digital Input Section Rev. B | Page 8 of 13...
  • Page 9 EVAL-SSM3582Z User Guide UG-934 Figure 10. Schematic of the EVAL-SSM3582Z Power Supply Section Rev. B | Page 9 of 13...
  • Page 10 UG-934 EVAL-SSM3582Z User Guide OUTL+ OU TL+ LEFT OUTPUT OU TL– OUTL- OUTR+ J3 1 OU TR+ C3 9 RIGHT OUTPUT J2 9 C4 0 OU TR– OUTR- R2 THROUGH R30 NOT FITTED FOR STEREO R27 THROUGH R300OHM FOR MONO Figure 11.
  • Page 11 EVAL-SSM3582Z User Guide UG-934 Figure 16. EVAL-SSM3582Z Top Silkscreen Figure 14. EVAL-SSM3582Z Third Layer, Copper Figure 17. EVAL-SSM3582Z Bottom Silkscreen Figure 15. EVAL-SSM3582Z Bottom Layer, Copper Rev. B | Page 11 of 13...
  • Page 12: Ordering Information

    Qty Reference Designator Description Manufacturer Part Number Board Evaluation Board EVAL-SSM3582Z, 4-layer, 3.8" × 3" Analog Devices, Inc. EVAL-SSM3582Z C1, C2, C39, C40 Multilayer ceramic capacitors, 220 pF, 50 V, NP0, 0402 Murata ENA GRM1555C1H221JA01D Multilayer ceramic capacitors, 1 μF, 25 V, X7R, 1206...
  • Page 13 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.

This manual is also suitable for:

Ssm3582a

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