Analog Devices EVAL-SSM4567Z User Manual
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Analog Devices EVAL-SSM4567Z User Manual

Analog Devices EVAL-SSM4567Z User Manual

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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
Evaluating the

FEATURES

I
2
S/PDM/TDM/optical digital audio input
Full featured evaluation board for the
PCB footprint for optional EMI filter
Includes the
EVAL-ADUSB2EBZ
for plug-and-play operation
Microsoft Windows-based evaluation software with
simple graphical user interface

EQUIPMENT REQUIRED

Audio source with optical fiber or 10-pin 0.100" digital
audio header
Power supply (5.0 V, 2.0 A recommended)
EVAL-SSM4567Z
evaluation board
USB-to-I
C adapter dongle,
2
PC running Windows XP or later; USB 2.0 port required
Speaker or other load

DOCUMENTS REQUIRED

SSM4567
data sheet

OPTIONAL SOFTWARE

SigmaStudio software

GENERAL DESCRIPTION

The
SSM4567
evaluation board is a complete solution for
driving loudspeakers with boosted battery power supply as well
as sense output current, output voltage, and the VBAT supply
voltage. It includes the
SSM4567
components needed to connect the digital audio input and
optical fiber.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
SSM4567
Digital 2.5 W, 5.1 V, Boost Class-D Audio Amplifier
SSM4567
USB hardware interface
EVAL-ADUSB2EBZ
amplifier IC and the additional
EVAL-SSM4567Z User Guide
The
SSM4567
combines an audio digital-to-analog converter
(DAC), a power amplifier, and PDM or PCM (I
audio interfaces on a single chip. Using the SSM4567, audio can
be transmitted digitally to the audio amplifier, significantly
reducing the effect of noise sources on the transmitted audio
and eliminating the need for input coupling capacitors. The
SSM4567
is capable of delivering 2.5 W of continuous output
power with <1% THD + N driving a 4 Ω load from a 3.6 V
supply.
The
SSM4567
can be controlled by I
TDM control. It can also operate in standalone mode without a
control interface.
The
SSM4567
includes circuitry to sense output current, output
voltage, and the VBAT supply voltage. Current sense is
performed using an on-chip sense resistor that is connected
between an output pin and the load. Output current and voltage
are sent to ADCs. The output of these ADCs are available on
the digital serial output port. The VBAT supply voltage can
be used with an automatic gain control circuit that is fully
configurable. This AGC can limit the maximum output at low
battery voltages to avoid current that is too high off the battery.
This user guide describes how to use the
to test the features of the
the hardware and software of the
including detailed schematics and PCB layout artwork.
The
SSM4567
data sheet provides detailed information about the
specifications, internal block diagrams, and application
guidance for the amplifier IC.
Rev. 0 | Page 1 of 23
UG-704
2
S/TDM) digital
C, PDM pattern control, or
2
EVAL-SSM4567Z
SSM4567
amplifier. It describes
SSM4567
evaluation board,

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Summary of Contents for Analog Devices EVAL-SSM4567Z

  • Page 1: Features

    EVAL-SSM4567Z User Guide UG-704 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 Evaluating the SSM4567 Digital 2.5 W, 5.1 V, Boost Class-D Audio Amplifier FEATURES SSM4567 combines an audio digital-to-analog converter...

  • Page 2: Table Of Contents

    UG-704 EVAL-SSM4567Z User Guide TABLE OF CONTENTS Features ....................1 PDM Channel Selection ...............6 Equipment Required ................ 1 PCM Mode Pin Setup and Control ..........6 Documents Required ............... 1 Evaluation Board Software Quick Start Procedures .....7 Optional Software ................1 Hardware Only Quick Start ............7...

  • Page 3: Evaluation Board Overview

    EVAL-SSM4567Z User Guide UG-704 EVALUATION BOARD OVERVIEW SSM4567 evaluation board provides all of the support circuitry required to operate the SSM4567 amplifier. Figure 1 shows an overview while Figure 2 shows the typical bench characterization setup used to evaluate the audio performance of the SSM4567. See the Evaluation Board Software Quick Start Procedures section to get started.

  • Page 4: Evaluation Board Hardware

    UG-704 EVAL-SSM4567Z User Guide EVALUATION BOARD HARDWARE The two connectors are wired together in parallel so that they can POWER SUPPLIES be used interchangeably (see Figure 4). SSM4567 requires two power supplies, VBAT and IOVDD. VBAT voltages can be between 2.5 V and 5.0 V. The IOVDD power supply must be 1.8 V.

  • Page 5: Sense Output Signals

    EVAL-SSM4567Z User Guide UG-704 SHIFTED SDATAO Figure 6. Amplifier Output Connectors Figure 7. SDATAO Jumpers and Connections Mode Selection Pins In the standard filterless configuration, the two headers are SSM4567 can operate in many different modes based on connected with 0 Ω links on the pads marked FB5 and FB6. In the state of several multifunction pins.

  • Page 6: Pdm Control Mode

    UG-704 EVAL-SSM4567Z User Guide PDM CONTROL MODE PCM MODE PIN SETUP AND CONTROL SSM4567 can boot up in PDM control mode. Powering up, When the SEL pin is tied to IOVDD, the SSM4567 is set for or resetting, the part while the SEL pin, J12, is tied low places PCM mode operation.

  • Page 7: Evaluation Board Software Quick Start Procedures

    Skip this procedure if you previously installed any SigmaStudio or Complete the following instructions after SigmaStudio and the USBi related drivers from Analog Devices.) USBi driver installation. Ensure that the Cypress (CYUSB) USB driver is installed during Connect the...
  • Page 8 UG-704 EVAL-SSM4567Z User Guide After launching SigmaStudio, follow this sequence to initiate the SSM4567 GUI: Copy the SSM4567.dll to C:\Program Files\Analog Devices\SigmaStudio 3.7. From the main SigmaStudio window, click Tools>Add-Ins Browser…>Add Dll and browse to locate the SSM4567.dll you copied to in Step 5a and then click Save.
  • Page 9 EVAL-SSM4567Z User Guide UG-704 Figure 17. SSM4567 Evaluation Software GUI Rev. 0 | Page 9 of 23...

  • Page 10: Passive Component Selection

    UG-704 EVAL-SSM4567Z User Guide PASSIVE COMPONENT SELECTION Although the evaluation board is preloaded with the passive components required for a basic configuration, the same circuit can be evaluated with different component values or filter designs. Selecting the proper components is the key to achieving the performance required at the budgeted cost.

  • Page 11: Evaluation Board Schematics And Artwork

    EVAL-SSM4567Z User Guide UG-704 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 18. SSM4567 Evaluation Board Schematic Rev. 0 | Page 11 of 23...
  • Page 12 UG-704 EVAL-SSM4567Z User Guide Figure 19. SSM4567 Evaluation Board Schematic (Continued) Rev. 0 | Page 12 of 23...
  • Page 13 EVAL-SSM4567Z User Guide UG-704 Figure 20. SSM4567 Evaluation Board Schematic (Continued) Rev. 0 | Page 13 of 23...
  • Page 14 UG-704 EVAL-SSM4567Z User Guide Figure 21. SSM4567 Evaluation Board Schematic (Continued) Rev. 0 | Page 14 of 23...
  • Page 15 EVAL-SSM4567Z User Guide UG-704 Figure 22. Evaluation Board Layout, Primary Side (Layer 1) Rev. 0 | Page 15 of 23...
  • Page 16 UG-704 EVAL-SSM4567Z User Guide Figure 23. Evaluation Board Layout, Ground Plane (Layer 2) Rev. 0 | Page 16 of 23...
  • Page 17 EVAL-SSM4567Z User Guide UG-704 Figure 24. Evaluation Board Layout, Power Plane (Layer 3) Rev. 0 | Page 17 of 23...
  • Page 18 UG-704 EVAL-SSM4567Z User Guide Figure 25. Evaluation Board Layout, Secondary Side (Layer 4) Rev. 0 | Page 18 of 23...
  • Page 19 EVAL-SSM4567Z User Guide UG-704 Figure 26. Evaluation Board Layout, Top Silkscreen Rev. 0 | Page 19 of 23...
  • Page 20 UG-704 EVAL-SSM4567Z User Guide Figure 27. Evaluation Board Layout, Bottom Silkscreen Rev. 0 | Page 20 of 23...

  • Page 21: Ordering Information

    EVAL-SSM4567Z User Guide UG-704 ORDERING INFORMATION BILL OF MATERIALS Table 5. Item Reference Designator Description Manufacturer Mfg Part Number C17, C24 Multilayer ceramic 10 V X5R 22 µF 0805 Taiyo Yuden LMK212BJ226MG-T C1, C13, C16, C20 Multilayer ceramic 10 V X5R 10 µF 0805...
  • Page 22 UG-704 EVAL-SSM4567Z User Guide Item Reference Designator Description Manufacturer Mfg Part Number Adjustable low dropout voltage Analog Devices ADP1711AUJZ-1.8-R7 regulator 192 kHz AES3/SPDIF receiver Cirrus Logic CS8416-CZZ Adjustable low dropout voltage Analog Devices ADP1711AUJZ-3.3-R7 regulator Oscillator 12.288 MHz 3.3 V SMD...
  • Page 23 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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