Typical operating characteristics – Rainbow Electronics MAX9796 User Manual
Page 7
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
7
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9796 toc01
FREQUENCY (Hz)
THD+N (%)
10k
1k
100
0.01
0.1
1
0.001
10
100k
P
OUT
= 1W
P
OUT
= 1.6W
V
DD
= 5V
R
L
= 4
Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9796 toc02
FREQUENCY (Hz)
THD+N (%)
10k
1k
100
0.01
0.1
1
0.001
10
100k
P
OUT
= 500mW
P
OUT
= 750mW
V
DD
= 5V
R
L
= 8
Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9796 toc03
FREQUENCY (Hz)
THD+N (%)
10k
1k
100
0.01
0.1
1
0.001
10
100k
P
OUT
= 350mW
P
OUT
= 800mW
V
DD
= 3.3V
R
L
= 4
Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9796 toc04
FREQUENCY (Hz)
THD+N (%)
10k
1k
100
0.01
0.1
1
0.001
10
100k
P
OUT
= 200mW
P
OUT
= 450mW
V
DD
= 3.3V
R
L
= 8
Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9796 toc05
FREQUENCY (Hz)
THD+N (%)
10k
1k
100
0.01
0.1
1
0.001
10
100k
SSM
FFM
V
DD
= 5V
R
L
= 8
Ω
P
OUT
= 500mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9796 toc06
OUTPUT POWER (W)
THD+N (%)
2.4
1.8
1.2
0.6
0.01
0.1
1
10
100
0.001
0
3.0
20Hz
10kHz
1kHz
V
DD
= 5V
R
L
= 4
Ω
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9796 toc08
OUTPUT POWER (W)
THD+N (%)
1.0
0.8
0.6
0.4
0.2
0.01
0.1
1
10
100
0.001
0
1.2
V
DD
= 3.3V
R
L
= 4
Ω
20Hz
10kHz
1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9796 toc07
OUTPUT POWER (W)
THD+N (%)
1.5
1.2
0.9
0.6
0.3
0.01
0.1
1
10
100
0.001
0
1.8
V
DD
= 5V
R
L
= 8
Ω
20Hz
10kHz
1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9796 toc09
OUTPUT POWER (W)
THD+N (%)
0.6
0.4
0.2
0.01
0.1
1
10
100
0.001
0
0.8
20Hz
10kHz
1kHz
V
DD
= 3.3V
R
L
= 8
Ω
Typical Operating Characteristics
(V
DD
= PV
DD
= CPV
DD
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
DD
, I
2
C settings (INA gain = +20dB, INB gain = INC gain =
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). C1 = C2 = C3 = 1µF. Speaker load resistors (R
LSP
) are ter-
minated between OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted.)