Class D audio amplifier devices use proprietary multi-level switching technology for high-efficiency speaker drive. The family covers MA12040, MA12040P, MA12070 and MA12070P amplifiers with analog-input and I2S digital-input variants. Reference-board documentation specifies 2 x BTL or 1 x PBTL operation, PVDD ranges up to 18 V for MA12040 variants and up to 26 V for MA12070 variants. The devices support I2C control, adaptive power management, filterless operation, low idle current and integrated protection functions.
Checking distributor stock and pricing after the page loads.
| Family devices | MA12040, MA12040P, MA12070, MA12070P |
| Audio channels | 2 x BTL or 1 x PBTL |
| Analog input variants | MA12040, MA12070 |
| Digital input variants | MA12040P, MA12070P; I2S |
| Supply voltage range, MA12040 variants | 5 to 18V |
| Supply voltage range, MA12070 variants | 5 to 26V |
| Maximum output current, MA12040 variants | 6 per channelA |
| Maximum output current, MA12070 variants | 8 per channelA |
| Peak output power at 18 V, 4 ohm | 2 x 40, 1 kHz sine, 10% THD+NW |
| Peak output power at 26 V, 4 ohm | 2 x 80, 1 kHz sine, 10% THD+NW |
| Peak output power at 26 V, 8 ohm | 2 x 40, 1 kHz sine, 10% THD+NW |
| Continuous output power at 26 V, 4 ohm | 2 x 9.0, <0.02% THD+NW |
| Output integrated noise, analog variants | <100, A-weightedµVrms |
| Output integrated noise, digital variants | <150, A-weightedµVrms |
| Dynamic range, analog variants | >100dB |
| Dynamic range, digital variants | >96dB |
| Idle current at 18 V, analog variants | <16mA |
| Idle current at 18 V, digital variants | <19mA |
These are design resources that include the Infineon MA120xx
User manual for Infineon MERUS MA120xxx reference boards featuring MA12040/MA12070 amplifiers, including schematics, BOM, and performance measurement data.
