SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
VS.
VS.
OUTPUT POWER
OUTPUT POWER
VDD = 5 V
VDD = 5.5 V
Load = 4 ohms
Gain = 20 dB
BTL Mode
Load = 8 ohms
Gain = 20 dB
BTL Mode
20KHz
20 Hz
20KHz
20 Hz
1 KHz
1 KHz
Figure 8
OUTPUT POWER (W)
Figure 7
OUTPUT POWER (W)
Figure 8
CLOSED LOOP RESPONSE
Gain
CLOSED LOOP RESPONSE
Gain
Phase
Phase
VDD = 5 V
VDD = 5 V
Load = 8 ohms
Gain = 6 dB
Po = 1W
Load = 8 ohms
Gain = 20 dB
Po = 1W
BTL Mode
BTL Mode
FREQUENCY (Hz)
Figure 9
FREQUENCY (Hz)
Figure 10
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V.1.4 Revised May 28,2007