PAM8302 Datasheet, PDF (5/8 Pages) List of Unclassifed Manufacturers – Tiny Package 2 Watt Class-D Audio Amplifiers With Enable

PAM8302
Tiny Package 2 Watt Class-D Audio Amplifiers With Enable
OPERATION INFORMATION
Calculating Output Power of BTL amplifier
Vsupply
Vsat
Vsat
Vsupply
Output power is related to supply voltage and the saturation
voltage (Vsat). The Maximum peak-to-peak output voltage
on one side of BTL amplifier output is
Vpk-pk
Vp-p = ( Vsupply - 2 X Vsat )
Vp-p
Vrms =
One side
22
Maximum output power of a BTL amplifier with 1% THD is
Pout (1%) = 4 X Vrms²/ Rload
Maximum output power of a BTL amplifier with 10% THD is
Pout (10%) = Pout (1%) X 1.25
Output Power vs. Vp-p
BTL Output Power
5.0
4.0
4
3.0
2.0
8
1.0
0.0
0
1
2
3
4
5
6
Vdd - Vsat (V)
Power Analog Microelectronics, Inc.
CONFIDENTIAL. DO NOT DISTRIBUTE OR REPRODUCE WITHOUT PERMISSION FROM P.A.M.
5
CONFIDENTIAL INFORMATION