SSM2305-EVALZ Analog Devices Inc, SSM2305-EVALZ Datasheet

BOARD EVAL FOR SSM2305 LFCSP

SSM2305-EVALZ

Manufacturer Part Number
SSM2305-EVALZ
Description
BOARD EVAL FOR SSM2305 LFCSP
Manufacturer
Analog Devices Inc
Datasheets

Specifications of SSM2305-EVALZ

Amplifier Type
Class D
Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
2.8W x 1 @ 4 Ohm
Voltage - Supply
2.2 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
SSM2305
Silicon Manufacturer
Analog Devices
Application Sub Type
Audio Power Amplifier - Class D
Kit Application Type
Amplifier
Silicon Core Number
SSM2305
Kit Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Single-ended and differential input capability
User-friendly interface connection
Optimized EMI suppression filter assembled on board
GENERAL DESCRIPTION
The SSM2305 is a fully integrated, single-chip, mono Class-D
audio amplifier that is designed to maximize performance for
mobile phone applications. The application circuit operates
from a single 2.5 V to 5.5 V supply and is capable of delivering
2.8 W of continuous output power with less than 10% THD + N
driving a 4 Ω load from a single 5.0 V supply.
The SSM2305 comes with a differential mode input port and a high
efficiency, full H-bridge at the output that enables direct coupling of
the audio power signal to the loudspeaker. The differential mode
input stage allows for canceling of common-mode noise.
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
Figure 1. SSM2305 Evaluation Board, Top View
Mono 2.8 W Class-D Audio Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The part also features a high efficiency, low noise output modu-
lation scheme that requires no external LC output filters when
attached to an inductive load. The modulation provides high
efficiency even at low output power. Filterless operation also
helps to decrease distortion due to the nonlinearities of output
LC filters.
This data sheet describes how to configure and use the SSM2305
evaluation board to test the SSM2305. It is recommended that
this data sheet be read in conjunction with the
sheet, which provides more detailed information about the
specifications, internal block diagrams, and application
guidance for the amplifier IC.
EVALUATION BOARD DESCRIPTION
The SSM2305 evaluation board carries a complete application
circuit for driving a loudspeaker. Figure 1 shows the top view of
the evaluation board, and Figure 2 shows the bottom view.
Figure 2. SSM2305 Evaluation Board, Bottom View
Evaluation Board for
©2009 Analog Devices, Inc. All rights reserved.
EVAL-SSM2305
SSM2305
www.analog.com
data

Related parts for SSM2305-EVALZ

SSM2305-EVALZ Summary of contents

Page 1

... W of continuous output power with less than 10% THD + N driving a 4 Ω load from a single 5.0 V supply. The SSM2305 comes with a differential mode input port and a high efficiency, full H-bridge at the output that enables direct coupling of the audio power signal to the loudspeaker. The differential mode input stage allows for canceling of common-mode noise ...

Page 2

... EVAL-SSM2305 TABLE OF CONTENTS Features .............................................................................................. 1 General Description ......................................................................... 1 Evaluation Board Description ......................................................... 1 Revision History ............................................................................... 2 Evaluation Board Hardware ............................................................ 3 Input Configuration ..................................................................... 3 Output Configuration .................................................................. 3 Power Supply Configuration ....................................................... 3 Component Selection................................................................... 3 REVISION HISTORY 5/09—Revision 0: Initial Version   PCB Layout Guidelines .................................................................4   Getting Started ...............................................................................5   What to Test ...................................................................................5   Evaluation Board Schematic and Artwork .....................................6   ...

Page 3

... LC (top) or ferrite bead (bottom) EMI filters. A direct connection to the SSM2305 is established on J6. If EMI filtering is used, insert only one style of EMI filtering on the board. The SSM2305 does not require any external LC output filters due to a low noise modulation scheme. However, if the speaker length is > ...

Page 4

... EVAL-SSM2305 Table 1. Recommended Output Beads (L1 and L2) Part No. Manufacturer BLM18PG121SN1D Murata MPZ1608S101A TDK MPZ1608S221A TDK BLM18EG221SN1D Murata Table 2. Recommended Output Inductors (L3 and L4) Part No. Manufacturer LQM31PNR47M00 Murata LQM31PN1R0M00 Murata LQM21PNR47MC0 Murata LQM21PN1R0MC0 Murata LQH32CN2R2M53 Murata Ensure that these beads have enough current conducting capability while providing sufficient EMI attenuation. The current rating needed for an 8 Ω ...

Page 5

... To activate the SSM2305, place a jumper across Pin 1 and Pin 2 (the left and center terminals) of JP6 and make sure that the SD pin is pulled up to VDD. 3. Connect the load across the output ports. ...

Page 6

... J3 VDD GND C5 10uF VDD OUT GND 0.1uF 10uF 3 6 IN+ VDD 4 5 IN- OUT+ SSM2305 Figure 7. Schematic of the SSM2305 Evaluation Board Rev Page OPEN LQM31PNR47M00 OPEN C3 47nF SHORT F1 MPZ1608S221A C8 OPEN 500pF J6 OPEN F2 C9 FILT OUT VDD SHORT 500pF MPZ1608S221A L2 OPEN OPEN LQM31PNR47M00 C4 47nF ...

Page 7

... Figure 8. Layout of the SSM2305 Evaluation Board Rev Page EVAL-SSM2305 ...

Page 8

... (IN) ORDERING GUIDE Model Description SSM2305-EVALZ 1 Evaluation Board RoHS Compliant Part. ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB07817-0-05/09(0) Description Ceramic capacitor, 1 nf, 10 Inductor, 0.47 μH Ceramic capacitor, 0.1 μF 100 mil straight header, JUMPER100 Ceramic capacitor, 10 μ ...

Related keywords