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Overview
Features and Benefits
- 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
Product Details
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
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Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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