SSM3515
Info: : PRODUCTION
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SSM3515

31 W, Filterless, Class-D Digital Input Audio Amplifier

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.49
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
  • See datasheet for additional features
Additional Details
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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 (−40°C to +85°C). 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).

APPLICATIONS

  • Notebooks
  • Portable electronics
  • Home audio
Part Models 2
1ku List Price Starting From $2.49

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
SSM3515CCBZ-R7
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  • HTML
SSM3515CCBZ-RL
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-SSM3515

SSM3515 Evaluation Board

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EVAL-SSM3515

SSM3515 Evaluation Board

SSM3515 Evaluation Board

Features and Benefits

  • Filterless digital input, mono Class-D amplifier
  • Operates from a single 4.5 V to 17 V supply
  • 25 W output power, 16 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
  • Digital interface supports sample rates from 8 kHz to 192 kHz
  • Flexible digital and analog gain adjustment
  • Flexible supply monitoring AGC function
  • Short-circuit and thermal protection, thermal warning

Product Detail

The EVAL-SSM3515Z is an evaluation board for quick evaluation of the SSM3515. The board uses a single supply from 4.5 V to 17 V. The board includes 3.3 V and 1.8 V regulators. The on-board digital SPDIF optical input generates the serial digital signal to the SSM3515. The board provides register control using USBi with SigmaStudio™-based GUI or the Total Phase Aardvark™ I2C/SPI Host Adapter. The application circuit requires a minimum of external components and can operate from a single 4.5 V to 17 V supply. It is capable of delivering 8 W of continuous output power into an 8 Ω load, and 15 W into an 4 Ω load from a 12 V power supply. The board can deliver 25 W into a 4 Ω load from a 16 V power supply, all with <1% total harmonic distortion + noise (THD + N); however, output powers above 20 W are not continuous due to the thermal limit.


The EVAL-SSM3515Z evaluation board includes a complete circuit for driving a loudspeaker.

Tools & Simulations

Tools & Simulations 1

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