Infineon MERUS MA12070P, User Manual, Page: 4 / 28

Application Note 4 of 28 V 1.0
2019-04-28
User manual for MA120xxx reference boards
Board overview
1.1 General board specifications
 Number of audio channels 2 x BTL or 1 x PBTL
 Audio input format:
o
MA12040 and MA12070 Analog
o
MA12040P and MA12070P Digital (I 2 S)
 Supply voltage range MA12040(P) 5 to 18 V
 Supply voltage range MA12070(P) 5 to 26 V
 Maximum output current per channel MA12040(P) 6 A
 Maximum output current per channel MA12070(P) 8 A

Output power capability at 18 V PVDD:
o
Peak 2 x 40 W sine 1 kHz (RMS) into 4
Ω
(10 percent THD + N)
o
Peak 2 x 20 W sine 1 kHz (RMS) into 8
Ω
(10 percent THD + N)
o
Continuous 2 x 9.0 W sine 1 kHz (RMS) into 4
Ω
(less than 0.08 percent THD + N)
 Output power capability at 26 V PVDD:
o
Peak 2 x 80 W sine 1 kHz (RMS) into 4
Ω
(10 percent THD + N)
o
Peak 2 x 40 W sine 1 kHz (RMS) into 8
Ω
(10 percent THD + N)
o
Continuous 2 x 9.0 W sine 1 kHz (RMS) into 4
Ω
(less than 0.02 percent THD + N)
 Amplifier gain (MA12040 and MA12070 only) 20 dB or 26 dB (register configurable)
 Output integrated noise:
o
MA12040 and MA12070 Less than 100 µV
rms
(AW)
o
MA12040P and MA12070P Less than 150 µV
rms
(AW)
 Dynamic range:
o
MA12040 and MA12070 More than 100 dB
o
MA12040P and MA12070P More than 96 dB
 Idle current consumption at 18 V PVDD:
o
MA12040 and MA12070 Less than 16 mA
o
MA12040P and MA12070P Less than 19 mA
Note: Idle consumption is the sum of output stage current and 5 V supply current. As all the supplies are tied to
PVDD, the efficiency of the buck converter 5 V should be taken into account when measuring idle current
consumption directly from PVDD. Please refer to the MA120xx/P device datasheet for exact current figures.
1.2 RFB device type
The type of device (MA12040, MA12040P, MA12070 and MA12070P) on the RFB is printed on the top of the
device, and is also stated on the serial number label placed on the bottom side of the PCB.
1.3 Set-up guide
The RFB works out of the box with speakers, input source and power connected. No external configuration or
set-up is needed for quick start-up.