max9777etit Maxim Integrated Products, Inc., max9777etit Datasheet - Page 8

• Manufacturer Part Number: max9777etit
• Description: Max9777, Max9778 Stereo 3w Audio Power Amplifiers With Headphone Drive And Input Mux
• Manufacturer: Maxim Integrated Products, Inc.

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
8
(V
0.0001
DD
0.0001
0.001
0.001
0.01
0.01
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
100
300
250
200
150
100
0.1
0.1
10
50
OUTPUT POWER vs. AMBIENT TEMPERATURE
= PV
1
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
-40
10
vs. OUTPUT POWER (HEADPHONE MODE)
0
vs. FREQUENCY (HEADPHONE MODE)
A
R
f = 1kHz
R
P
P
V
L
DD
THD+N = 10%
L
THD+N = 1%
OUT
OUT
= 16Ω
= 2V/V
= 16Ω
50
-15
= 5V, GND = PGND = 0V, V
= 25mW
= 100mW
AMBIENT TEMPERATURE (°C)
100
(HEADPHONE MODE)
f = 20Hz
OUTPUT POWER (mW)
100
FREQUENCY (Hz)
10
P
150
1k
OUT
P
OUT
= 50mW
35
= 150mW
f = 1kHz
200
10k
f =
R
A
60
L
V
250
10kHz
= 32Ω
= 1V/V
100k
300
85
SHDN
0.0001
0.0001
0.001
= 5V, C
0.001
0.01
0.01
Typical Operating Characteristics (continued)
150
125
100
100
0.1
0.1
75
50
25
10
OUTPUT POWER vs. AMBIENT TEMPERATURE
1
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
-40
10
vs. OUTPUT POWER (HEADPHONE MODE)
0
vs. FREQUENCY (HEADPHONE MODE)
P
P
A
R
f = 1kHz
R
OUT
OUT
THD+N = 10%
THD+N = 1%
V
L
L
BIAS
= 32Ω
= 32Ω
= 1V/V
= 25mW
= 150mW
-15
25
AMBIENT TEMPERATURE (°C)
100
= 1µF, T
(HEADPHONE MODE)
OUTPUT POWER (mW)
FREQUENCY (Hz)
10
P
P
50
f = 20Hz
OUT
OUT
A
1k
= 50mW
= 100mW
= +25°C, unless otherwise noted.)
35
75
f = 1kHz
10k
R
A
f =
100
60
L
V
= 32Ω
= 2V/V
10kHz
100k
125
85
0.0001
0.0001
0.001
0.001
0.01
0.01
600
500
400
300
200
100
100
100
0.1
0.1
10
10
0
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
vs. OUTPUT POWER (HEADPHONE MODE)
1
0
0
OUTPUT POWER vs. LOAD RESISTANCE
A
R
A
R
V
L
V
L
= 32Ω
= 2V/V
= 1V/V
= 16Ω
50
25
f = 20Hz
10
(HEADPHONE MODE)
f = 20Hz
LOAD RESISTANCE (Ω)
f = 1kHz
OUTPUT POWER (mW)
OUTPUT POWER (mW)
f = 1kHz
100
50
THD+N = 10%
THD+N = 1%
100
150
75
200
f =
1k
f =
100
10kHz
f = 1kHz
250
10kHz
300
10k
125