2, 31.76 W, Digital Input, Filterless Stereo Class D Audio Amplifier Data Sheet SSM3582A FEATURES Supported sample rates from 8 kHz to 192 kHz with 24-bit resolution Digital input stereo, high efficiency Class-D amplifier Multiple PCM audio serial data formats Operates from a single 4.5 V to 16.5 V supply TDM slave with support for up to 16 devices on a single bus State-of-the-art, proprietary, filterless - modulation 2 I S or left justified slave 106.5 dB SNR at P = 8.1 W, R = 8 , A = 19 dB, O L V Adjustable full-scale output tailored for many PVDD sources PV = 12 V, A weighted DD 2- and 3-cell Li-Ion batteries 0.004% THD + N at 5 W into 8 Digital volume control with selectable smooth ramp 38.5 V rms output voltage noise, f = 20 Hz to 20 kHz, Automatic power-down function A weighted, PV = 16 V, 8 DD Supply monitoring automatic gain control (AGC) function Pop and clickless on and off sequence reduces system brownout 2 14.67 W output at 12 V supply to 4 loads at <1% THD + N 2 Standalone operational mode without I C 2 14.4 W output at 16 V supply to 8 loads at <1% THD + N 2 Temperature sensor with 1C step readout via I C Mono mode for increased maximum output power Short-circuit, undervoltage, and thermal protection 1 49.69 W output at 16 V supply to 2 l oads at <1% THD + N Thermal early warning Support for low impedance loads Power-on reset As low as 3 /5 H in stereo mode PVDD sensing ADC As low as 2 /5 H in mono mode 40-lead, 6 mm 6 mm LFCSP with thermal pad High power efficiency 93.8% efficiency into an 8 load APPLICATIONS 90.6% efficiency into a 4 load Mobile computing 12.34 mA quiescent current with single 12 V PV supply DD All in one computers Single-supply operation with internal LDOs or option to use Portable electronics an external 5 V and 1.8 V supply for lowest power Wireless speakers consumption Televisions 2 I C control and hardware modes with up to 16 pin-selectable slots/addresses FUNCTIONAL BLOCK DIAGRAM DVDD DVDD EN AVDD AVDD EN PVDD SDA DVDD AVDD SCL 2 PVDD TEMPERATURE I C ADC SENSOR ADDR0 CONTROL 1.8V LDO 5V LDO ADDR1 OUTL+ THREE-LEVEL BSTL+ FULL BRIDGE DAC - POWER STAGE BSTL MODULATOR OUTL VOLUME BCLK 2 I S TDM FSYNC BATTERY INTERFACE SDATA AGC OUTR+ THREE-LEVEL BSTR+ FULL BRIDGE - DAC POWER STAGE BSTR MODULATOR OUTR SSM3582A AGND PGND Figure 1. Rev. A Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. Tel: 781.329.4700 20192020 Analog Devices, Inc. All rights reserved. No license is granted by implication or otherwise under any patent or patent rights of Analog Technical Support www.analog.com Devices. Trademarks and registered trademarks are the property of their respective owners. 21861-001SSM3582A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Mono Mode ................................................................................ 31 Applications ...................................................................................... 1 Analog and Digital Gain ........................................................... 31 Functional Block Diagram .............................................................. 1 Pop and Click Suppression ....................................................... 31 Revision History ............................................................................... 2 Temperature Sensor ................................................................... 31 General Description ......................................................................... 3 Faults and Limiter Status Reporting ........................................ 32 Specifications .................................................................................... 4 VBAT (PVDD) Sensing ............................................................... 32 Digital Input/Output Specifications .......................................... 8 Limiter and Battery Tracking Threshold Control ................. 32 Digital Timing Specifications ..................................................... 9 High Frequency Clipper ............................................................ 35 Digital Input Timing Specifications .......................................... 9 EMI Noise ................................................................................... 35 Absolute Maximum Ratings ......................................................... 11 Output Modulation Description .............................................. 35 Thermal Resistance .................................................................... 11 Bootstrap Capacitors ................................................................. 36 ESD Caution................................................................................ 11 Power Supply Decoupling......................................................... 36 Pin Configuration and Function Descriptions .......................... 12 Output EMI Filtering ................................................................. 36 Typical Performance Characteristics ........................................... 14 PCB Placement ........................................................................... 36 Theory of Operation ...................................................................... 25 Layout .......................................................................................... 37 Overview ...................................................................................... 25 Register Summary .......................................................................... 38 Power Supplies ............................................................................ 25 Register Details ............................................................................... 39 Power-Up Sequence ................................................................... 26 Applications Information ............................................................. 56 Power-Down Operation ............................................................ 26 Typical Application Circuit ...................................................... 56 Clocking ....................................................................................... 26 Outline Dimensions ....................................................................... 58 Digital Audio Serial Interface ................................................... 26 Ordering Guide .......................................................................... 58 Standalone Operation ................................................................ 30 REVISION HISTORY 8/2020Rev. 0 to Rev. A Changes to Figure 76 Caption ...................................................... 33 Change to Features Section ............................................................. 1 Change to Table 46 ........................................................................ 52 Change to General Description Section ........................................ 3 Change to Table 51 ........................................................................ 55 Changes to Table 1 ........................................................................... 4 Changes to Figure 86 ..................................................................... 56 Changes to Table 5 ........................................................................... 8 Changes to Figure 87 ..................................................................... 57 Change to Table 16 ......................................................................... 28 Changes to Mono Mode Section and Table 19 .......................... 31 12/2019Revision 0: Initial Version Rev. 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