MAX9770 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
MAX9770 Datasheet PDF : 22 Pages
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1.2W, Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
Typical Operating Characteristics (continued)
(VDD = 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase, unless otherwise
noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
100
VDD = 5V
RL = 16Ω
10
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
100
VDD = 5V
RL = 32Ω
10
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
100
RL = 16Ω
10
1
f = 10kHz
f = 1kHz
0.1
1
f = 1kHz
0.1
f = 10kHz
1
f = 10kHz
f = 1kHz
0.1
0.01
0.001
f = 20Hz
0
20
40
60
80 100
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
100
RL = 32Ω
10
1
f = 10kHz
0.1
f = 1kHz
0.01
f = 20Hz
0.001
0
20
40
60
80
OUTPUT POWER (mW)
0.01
0.001
f = 20Hz
0
20
40
60
80
OUTPUT POWER (mW)
OUTPUT POWER
vs. LOAD RESISTANCE (HEADPHONE MODE)
100
90
VDD = 5V
f = 1kHz
80
70
60
THD+N = 10%
50
40
THD+N = 1%
30
20
10
0
10
100
1000
LOAD RESISTANCE (Ω)
0.01
0.001
f = 20Hz
0 10 20 30 40 50 60
OUTPUT POWER (mW)
OUTPUT POWER
vs. LOAD RESISTANCE (HEADPHONE MODE)
80
f = 1kHz
70
60
50
THD+N = 10%
40
THD+N = 1%
30
20
10
0
10
100
1000
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. SUPPLY VOLTAGE (HEADPHONE MODE)
100
90
RL = 16Ω
f = 1kHz
80
70 THD+N = 10%
60
50
40
THD+N = 1%
30
20
10
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. SUPPLY VOLTAGE (HEADPHONE MODE)
80
RL = 32Ω
70 f = 1kHz
THD+N = 10%
60
THD+N = 1%
50
40
30
20
10
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
POWER DISSIPATION
vs. OUTPUT POWER (HEADPHONE MODE)
300
250
200
RL = 16Ω
150
100
RL = 32Ω
50
0
0
f = 1kHz
POUT = POUTL + POUTR
30
60
90 120 150
OUTPUT POWER (mW)
8 _______________________________________________________________________________________
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