Class-D audio amplifier delivers 2x37 W output with a 10 V to 20 V power-stage supply range. MERUS multilevel switching supports ultra-low 52 mW idle power and inductor-less output filtering. Integrated DSP, I2S/TDM digital audio I/O, and I2C control support configurable speaker tuning and multichannel systems. The device uses a PG-VQFN-40 package and supports 2xBTL or 1xPBTL speaker configurations. It is RoHS-compliant, lead-free, and marked discontinued.
Checking distributor stock and pricing after the page loads.
| Amplifier Class | Class-D |
| Output Power per Channel | 37W |
| Speaker Channels | 2xBTL / 1xPBTL |
| Power Stage Supply Voltage | 10 to 20V |
| Low Voltage Supply | 1.62 to 3.65V |
| Digital I/O Supply | 1.62 to 3.65V |
| Idle Power Consumption | 52 typ, PVDD=18 V, LPC modemW |
| Standby Power Consumption | 2.8 typ, PVDD=18 V, VDD=1.8 VmW |
| Efficiency | 79 typ at 2x1 W, 8 ohm load% |
| Output Noise | 52 typ, A-weighted, HAP modeµVrms |
| Dynamic Range | 106 typ, A-weighted, HAP modedB |
| THD+N | 0.03 typ, 5 W, 1 kHz% |
| Maximum BTL Output Current | 6A |
| Maximum PBTL Output Current | 12A |
| Audio Input Type | I2S & TDM |
| Supported Sample Rates | 32, 44.1, 48, 88.2, 96, 176.4, 192kHz |
| Maximum I2S/TDM Bit Clock | 25MHz |
| Maximum Input I2S/TDM Channels | 16 |
| Maximum Output I2S/TDM Channels | 2 |
| I2C Clock Frequency | 100 standard mode, 400 fast modekHz |
| Ambient Operating Temperature | -25 to 85°C |
| Package | QFN 40 pins |
| RoHS Compliant | Yes |
| Lead-free | Yes |
| Halogen Free | Yes |
These are design resources that include the Infineon MA2304DNS
User manual for the EVAL_AUDIO_MA2304xNS kit, featuring MA2304DNS and MA2304PNS multilevel Class D audio amplifiers with digital inputs and filterless operation.
