Figure 3 : Output Offset Voltage versus
Supply Voltage
TDA2005
Figure 4 : Distortion versus Output Power
(bridge amplifier)
Figure 5 : Distortion versus Output Power
(bridge amplifier)
BRIDGE AMPLIFIER DESIGN
The following consideraions can be useful when designing a bridge amplifier.
Vo max
Parameter
Peak Output Voltage (before clipping)
Io max Peak Output Current (before clippling)
Po max RMS Output Power (before clipping)
Where : VCE sat = output transistors saturation voltage
VS = allowable supply voltage
RL = load impedance
Single Ended
1
2
(Vs
–
2
VCE
sat)
1 VS − 2 VCE sat
2
RL
1 (VS − 2 VCE sat)2
4
2 RL
Bridge
Vs – 2 VCE sat
VS − 2 VCE sat
RL
(VS − 2 VCE sat)2
2 RL
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