MAX9879 Maxim Integrated Products, MAX9879 Datasheet - Page 9

• Manufacturer Part Number: MAX9879
• Description: Stereo Class D Audio Subsystem
• Manufacturer: Maxim Integrated Products

www.datasheet4u.com
(V
trols = 0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL
or HPR to GND. R
DD
0.01
0.1
10
1
= V
0.01
PVDD_= 3.7V
R
PVDDL
L
THD+N vs. FREQUENCY SPEAKER
= 8Ω
OUTPUT POWER = 200mW
OUTPUT POWER = 600mW
0.1
= V
FREQUENCY (kHz)
SPK
PVDDR
0.01
100
0.1
_______________________________________________________________________________________
10
90
80
70
60
50
40
30
20
10
1
= ∞, R
0
1
0
0
PVDD_ = 3.0V
R
= 3.7V, V
L
EFFICIENCY vs. OUTPUT POWER
100
= 8Ω
f
IN
100
HP
THD+N vs. OUTPUT POWER
= 6kHz
10
200
with DirectDrive Headphone Amplifier
= ∞. C1 = C2 = C
f
IN
200
OUTPUT POWER (mW)
OUTPUT POWER (mW)
= 20Hz
300
f
CCIO
IN
= 1kHz, R
300
SPEAKER AMPLIFIERS (Headphone Disabled)
400
100
= 1.8V, V
500
400
L
Stereo Class D Audio Subsystem
= 8Ω
600
f
IN
500
0.01
= 1kHz
0.1
10
Typical Operating Characteristics (continued)
700
1
BIAS
GND
0.01
600
800
PVDD_= 3.0V
R
L
THD+N vs. FREQUENCY SPEAKER
= 1µF. T
= V
= 8Ω
700
900
OUTPUT POWER = 100mW
OUTPUT POWER = 400mW
PGNDL
0.1
FREQUENCY (kHz)
A
= +25°C, unless otherwise noted.)
= V
1
PGNDR
10
= 0. Single-ended inputs, preamp = 0dB, volume con-
2000
1800
1600
1400
1200
1000
0.01
800
600
400
200
0.1
10
1
0
2.7
0
OUTPUT POWER vs. SUPPLY VOLTAGE
PVDD_ = 3.7V
R
LEFT SPEAKER ONLY
R
f
100
IN
L
L
= 8Ω
= 8Ω
= 1kHz
f
3.1
IN
THD+N vs. OUTPUT POWER
200
= 6kHz
3.5
OUTPUT POWER (mW)
SUPPLY VOTAGE (V)
f
IN
0.01
0.1
THD+N = 10%
10
= 20Hz
400
1
3.9
0
PVDD_ = 3.7V
R
THD+N = 1%
L
4.3
= 8Ω
600
THD+N vs. OUTPUT POWER
200
f
f
IN
IN
4.7
f
IN
= 1kHz
= 20Hz
OUTPUT POWER (mW)
= 6kHz
800
400
5.1
1000
5.5
600
f
IN
= 1kHz
800
1000
9