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Product Details:

The SSM6515BCBZRL ultra-low power Class D audio amplifier is optimized for wireless headsets, smartphone headsets, and hearing aid devices. The application circuit requires only a few external components and is powered by a 1.8V (PVDD) power supply and a 1.2V to 1.8V (IOVDD) power supply. Power can be shared through 1.8V signal transmission. The SSM651 amplifier provides 85mW of continuous output power for 16Ω loads with total harmonic distortion plus noise (THD + N) <1%.

The SSM6515 uses a high-efficiency, low-noise modulation scheme that eliminates the need for an external inductor/capacitor (LC) output filter. The solution provides continuous high efficiency even at very low output power, extending battery life compared to traditional headphone amplifiers. The device is capable of driving 16 Ω loads at 55 mW with an efficiency of more than 90% and an A-weighted signal-to-noise ratio (SNR) of 113 dB. Stable spread spectrum, common-mode pulse density modulation provides lower electromagnetic interference (EMI) radiation emission compared to other Class D architectures.

The digital input function requires no external digital-to-analog converter (DAC). The SSM6515 has a micro-power shutdown mode. When the 1.8V PVDD power supply is used, the typical shutdown current is 6 μA, and it can be automatically turned off when there is no input. The device also has built-in burst and snap suppression circuits to minimize voltage surges at the output during device opening and closing. Inputs support a variety of serial audio formats, including I2S, Time division multiplexing (TDM), and pulse density modulation (PDM).

The SSM6515 operates with an I2C control interface or in standalone mode and is rated for temperatures ranging from −40°C to +85°C. The device has built-in output short-circuit protection.

Features

Filterless digital input, mono differential output Class D amplifier with 3-stage Σ-Δ modulation, optimized for headphone drivers

1.8V single power supply

80mW output power, 16Ω load (<0.1% THD + N)

2.57μV rms noise, 113dB, A weighted signal-to-noise ratio and dynamic range

0.003% THD + N (30mW, 1kHz output 32Ω load)

I2C control with up to 4 pin selectable addresses or independent operation

Multiple serial data formats

TDM, I2S or left-justified slave device

The PDM input frequency ranges from 2.8224MHz to 12.288MHz

Supports sampling rates from 8kHz to 768kHz

3.9μs delay with 6MHz PDM input

Flexible digital gain adjustment

Dc blocking high-pass filter with programmable angular frequency

1.55mw typical idle power in high performance mode

Low power mode reduces power consumption

Flexible output gain limiter and limiter

Automatic turn-off function with zero digital input

Short circuit protection

Click suppression

User selectable ultra low EMI radiation mode

Power-on reset

1.8V PVDD power supply

1.2V to 1.8V IOVDD power supply

0.984mm x 1.444mm, 0.35mm foot distance WLCSP-11

Applications

• Wireless headphones

• Active noise-cancelling headphones

• Smartphone headset speakers

• Hearing AIDS

• Portable electronic devices

Shenzhen Mingjiada Electronics Co., LTD. (Recycling) (supply) SSM6515BCBZRL Low power, Class D audio amplifier, if there is demand, please contact Mr. Chen consultation:

Tel: +8613410018555

Email: sales@hkmjd.com

Company website: www.hkmjd.com