MAX9879 Maxim Integrated Products, MAX9879 Datasheet - Page 14

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

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Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
(V
trols = 0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL
or HPR to GND. R
14
DD
______________________________________________________________________________________
= V
PVDDL
= V
0.01
100
0.1
SPK
10
1
PVDDR
0
= ∞, R
PVDD_ = 3.7V
R
NO SERIES RESISTORS
L
= 8Ω
f
THD+N vs. OUTPUT POWER
= 3.7V, V
IN
200
= 100Hz
HP
OUTPUT POWER (mW)
BYPASS SWITCH
= ∞. C1 = C2 = C
400
CCIO
2ms/div
600
= 1.8V, V
f
IN
f
IN
= 6kHz
800
= 1kHz
MAX9879 toc41
Typical Operating Characteristics (continued)
BIAS
GND
1000
= 1µF. T
= V
SDA
2V/div
SCL
2V/div
HP_
1V/div
ANALOG SWITCH
PGNDL
A
= +25°C, unless otherwise noted.)
= V
PGNDR
0.01
0.1
10
1
= 0. Single-ended inputs, preamp = 0dB, volume con-
0
PVDD_ = 3.7V
R
NO SERIES RESISTORS
L
f
= 8Ω
IN
THD+N vs. OUTPUT POWER
= 100Hz
30
OUTPUT POWER (mW)
BYPASS SWITCH
60
f
IN
f
IN
2ms/div
= 1kHz
= 6kHz
90
120
MAX9879 toc42
150
SDA
2V/div
SCL
2V/div
HP_
1V/div