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SSM3515CCBZ-R7 Scheda tecnica(PDF) 1 Page - Analog Devices |
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SSM3515CCBZ-R7 Scheda tecnica(HTML) 1 Page - Analog Devices |
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1 / 41 page  31 W, Filterless, Class-D Digital Input Audio Amplifier Data Sheet SSM3515 Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2015–2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Filterless digital input, mono Class-D amplifier Operates from a single 4.5 V to 17 V supply 31.3 W output power, 17 V supply, and 4 Ω load at 1% THD + N 107 dB A-weighted signal-to-noise ratio 93.3% efficiency into 8 Ω load at 12 V I2C control with up to 4 pin selectable slots/addresses Supports multiple serial data formats up to TDM16 Digital interface supports sample rates from 8 kHz to 192 kHz Flexible digital and analog gain adjustment Flexible supply monitoring AGC function 6.55 mA quiescent current with single 17 V PVDD supply Short-circuit and thermal protection, thermal warning 20-ball, 1.8 mm × 2.2 mm, 0.4 mm pitch WLCSP Pop and click suppression User selectable ultralow EMI emissions mode Power-on reset APPLICATIONS Notebooks Portable electronics Home audio GENERAL DESCRIPTION The SSM3515 is a fully integrated, high efficiency, mono Class-D audio amplifier with digital inputs. The application circuit requires a minimum of external components and can operate from a single 4.5 V to 17 V supply. It can deliver 8.4 W of output power into an 8 Ω load or 15.8 W into an 4 Ω load from a 12 V power supply, or 31.3 W into an 4 Ω load from a 17 V power supply, all with 1% THD + N. The SSM3515 features a high efficiency, low noise modulation scheme that requires no external LC output filters. This scheme provides high efficiency even at low output power. It operates with 92% efficiency at 7 W into an 8 Ω load or 88% efficiency at 15 W into 4 Ω from a 12 V supply. Spread spectrum pulse density modulation provides lower EMI radiated emissions compared with other Class-D architectures, particularly above 100 MHz. The digital input eliminates the need for an external digital-to- analog converter (DAC). The SSM3515 has a micropower shutdown mode with a typical shutdown current of 39 nA at the 12 V PVDD supply. The device also includes pop and click suppression circuitry that minimizes voltage glitches at the output during turn on and turn off. The SSM3515 operates with or without an I2C control interface. The SSM3515 is specified over the commercial temperature range (−40C to +85C). It has built in thermal shutdown and output short-circuit protection. It is available in a halide-free, 20-ball, 1.8 mm × 2.2 mm wafer-level chip scale package (WLCSP). FUNCTIONAL BLOCK DIAGRAM BCLK FSYNC SDATA OUT+ OUT– VREG50/AVDD 5V VREG18/DVDD AGND REG_EN PVDD PGND SCL SDA ADDR I2C TDM I2S INPUT VOLUME DAC FULL BRIDGE POWER STAGE Σ-∆ CLASS-D MODULATOR BST– BST+ SSM3515 1.8V Figure 1. |
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