Datasheet
MAX9850
Stereo Audio DAC with DirectDrive
Headphone Amplifier
8 _______________________________________________________________________________________
10
0.001
02010 40 50
TOTAL HARMONIC DISTORTION PLUS NOISE
(LINE IN TO HP) vs. POWER OUT
0.01
0.1
1
MAX9850toc04
POWER OUT (mW)
THD+N (%)
30
AV
DD
= 1.8V
R
L
= 32
Ω
f
IN
= 1kHz
f
IN
= 10kHz
f
IN
= 20Hz
10
0.001
04020 100
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO HP) vs. POWER OUT
0.01
0.1
1
MAX9850toc05
POWER OUT (mW)
THD+N (%)
60 80
AV
DD
= 3.0V
R
L
= 16
Ω
f
IN
= 1kHz
f
IN
= 10kHz
f
IN
= 20Hz
10
0.001
04020 100
TOTAL HARMONIC DISTORTION PLUS NOISE
(LINE IN TO HP) vs. POWER OUT
0.01
0.1
1
MAX9850toc06
POWER OUT (mW)
THD+N (%)
60 80
AV
DD
= 3.0V
R
L
= 16
Ω
f
IN
= 1kHz
f
IN
= 10kHz
f
IN
= 20Hz
10
0.001
04020 100
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO HP) vs. POWER OUT
0.01
0.1
1
MAX9850toc07
POWER OUT (mW)
THD+N (%)
60 80
AV
DD
= 3.0V
R
L
= 32
Ω
f
IN
= 1kHz
f
IN
= 10kHz
f
IN
= 20Hz
10
0.001
04020 100
TOTAL HARMONIC DISTORTION PLUS NOISE
(LINE IN TO HP) vs. POWER OUT
0.01
0.1
1
MAX9850toc08
POWER OUT (mW)
THD+N (%)
60 80
AV
DD
= 3.0V
R
L
= 32Ω
f
IN
= 1kHz
f
IN
= 10kHz
f
IN
= 20Hz
10
0.001
10 100 10k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO HP) vs. FREQUENCY
0.01
0.1
1
MAX9850toc09
FREQUENCY (Hz)
THD+N (%)
1k
AV
DD
= 1.8V
R
L
= 16Ω
P
OUT
= 5mW
P
OUT
= 21mW
10
0.001
10 100 10k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO HP) vs. FREQUENCY
0.01
0.1
1
MAX9850toc10
FREQUENCY (Hz)
THD+N (%)
1k
AV
DD
= 1.8V
R
L
= 32Ω
P
OUT
= 3mW
P
OUT
= 15mW
10
0.001
10 100 10k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO LINE OUT) vs. FREQUENCY
0.01
0.1
1
MAX9850toc11
FREQUENCY (Hz)
THD+N (%)
1k
AV
DD
= 1.8V TO 3.0V
R
L
= 10kΩ
V
OUT
= 2V
P-P
10
0.001
10 100 10k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
(DAC TO HP) vs. FREQUENCY
0.01
0.1
1
MAX9850toc12
FREQUENCY (Hz)
THD+N (%)
1k
AV
DD
= 3.0V
R
L
= 16Ω
P
OUT
= 10mW
P
OUT
= 60mW
Typical Operating Characteristics (continued)
(DV
DD
= AV
DD
= PV
DD
= 3.0V, AGND = DGND = PGND = 0V, C1 = 0.47µF, C2 = 2.2µF, C
NREG
= C
PREG
= C
REF
= 1µF, f
S
= 48kHz,
f
MCLK
= 12.288MHz, master integer mode, headphone volume set to +6dB, both channels driven in-phase, T
A
= +25°C, unless
otherwise noted. f
IN
= 984.375Hz, A-weighted THD+N.)