3.2W, High-Efficiency, Low-EMI, Filterless,
Class D Audio Amplifier
Typical Operating Characteristics
(VDD = PVDD = SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = VDD (SSM), unless otherwise noted. Gain = 12dB (G1 = 0, G2 = 1).
THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at TA = +25°C.) (See Typical Operating Circuit)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 5V
RL = 3Ω
1
POUT = 1W
0.1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 3.3V
RL = 3Ω
1
POUT = 500mW
0.1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 5V
RL = 4Ω
1
POUT = 1W
0.1
POUT = 2.6W
0.01
0.01
POUT = 1.3W
0.01
POUT = 2.2W
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 3.3V
RL = 4Ω
1
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 5V
RL = 8Ω
1
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 3.3V
RL = 8Ω
1
POUT = 500mW
0.1
0.1
POUT = 600mW
0.1
POUT = 300mW
0.01
POUT = 700mW
0.01
POUT = 1.2W
0.01
POUT = 500mW
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
10
VDD = 5V
RL = 8Ω
POUT = 1.2W
1
0.1
SSM
0.01
0.001
10
FFM
100
1k
10k
100k
FREQUENCY (Hz)
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 5V
RL = 3Ω
10
1
fIN = 200Hz, 1kHz
0.1
0.01
fIN = 10kHz
0.001
0
1
2
3
4
OUTPUT POWER (W)
0.001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 3.3V
RL = 3Ω
10
1
fIN = 200Hz, 1kHz
0.1
fIN = 10kHz
0.01
0.001
0
0.5
1.0
1.5
2.0
OUTPUT POWER (W)
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