Ultra-low-power mono Class-D audio amplifier provides digital input and differential filterless output for headphone and portable audio loads. It operates from a 1.8 V PVDD supply with a 1.1 V to 1.98 V IOVDD range and delivers up to 85 mW continuous output power into 16 Ω at less than 1% THD+N. The device supports I2S, TDM, left-justified, and PDM audio input formats with I2C control or standalone operation. It integrates short-circuit protection, pop-and-click suppression, automatic power-down, and programmable gain and high-pass filtering. The orderable device is specified from -40°C to +85°C in a RoHS-compliant 11-ball WLCSP reel package.
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| Amplifier Type | Mono Class-D audio amplifier |
| Output Configuration | Differential filterless output |
| PVDD Supply Voltage Range | 1.7 to 1.98V |
| PVDD Nominal Supply Voltage | 1.8V |
| IOVDD Supply Voltage Range | 1.1 to 1.98V |
| Output Power at 16 Ohm, 1% THD+N | 85mW |
| Output Power at 16 Ohm, 0.1% THD+N | 80mW |
| Output Power at 8 Ohm, 0.1% THD+N | 160mW |
| Dynamic Range, A-Weighted | 113dB |
| Signal-to-Noise Ratio, A-Weighted | 113dB |
| Output Noise, A-Weighted | 2.57uV rms |
| THD+N Ratio at 30 mW, 32 Ohm | 0.003% |
| Power Efficiency at 60 mW into 16 Ohm | 90% |
| I2S Input-to-Output Delay at 48 kHz | 49.4us |
| PDM Input Frequency Range | 2.8224 to 12.288MHz |
| Supported Sample Rate Range | 8 to 768kHz |
| Digital Gain Range | -71 to +24dB |
| Digital Gain Step | 0.375dB |
| Operating Temperature Range | -40 to +85°C |
| Package Ball Count | 11balls |
| Package Pitch | 0.35mm |
| Package Dimensions | 0.984 x 1.444mm |
| RoHS | Compliant |
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User guide for evaluating the SSM6515 ultra-low power Class-D audio amplifier using the EVAL-SSM6515Z board, SigmaStudio software, and USBi communications adapter.
