max9796 Maxim Integrated Products, Inc., max9796 Datasheet - Page 9

• Manufacturer Part Number: max9796
• Description: Max9796 2.3w, High-power Class D Audio Subsystem With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

(V
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). C1 = C2 = C3 = 1µF. Speaker load resistors (R
minated between OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted.)
-100
-120
-140
-100
-120
-140
DD
-20
-40
-60
-80
-20
-40
-60
-80
20
20
16
14
12
10
0
0
8
2.5
0.1
= PV
0
V
R
INPUTS AC GROUNDED
INPUTS AC GROUNDED
SPREAD-SPECTRUM MODULATION MODE
R
V
f = 1kHz
UNWEIGHTED
V
DD
L
L
DD
OUT
WIDEBAND OUTPUT SPECTRUM
= 8Ω
= 8Ω
= 5V
DD
INBAND OUTPUT SPECTRUM
3.0
= 5V
SPREAD-SPECTRUM MODE
= -60dBV
2.3W, High-Power Class D Audio Subsystem
vs. SUPPLY VOLTAGE
5k
= CPV
1
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
FREQUENCY (MHz)
3.5
FREQUENCY (Hz)
DD
_______________________________________________________________________________________
10k
4.0
10
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
with DirectDrive Headphone Amplifiers
4.5
15k
100
5.0
1000
20k
5.5
0.25
0.20
0.15
0.10
0.05
-100
-120
-140
-20
-40
-60
-80
20
8
Typical Operating Characteristics (continued)
0
2.5
0
INPUTS AC GROUNDED
SPREAD-SPECTRUM MODULATION MODE
R
V
f = 1kHz
A-WEIGHTED
V
L
DD
OUT
= 8Ω
3.0
INBAND OUTPUT SPECTRUM
= 5V
= -60dBV
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
5k
TURN-ON RESPONSE
SUPPLY VOLTAGE (V)
3.5
FREQUENCY (Hz)
10ms/div
10k
4.0
4.5
DD
15k
, I
MAX9796 toc23
5.0
2
C settings (INA gain = +20dB, INB gain = INC gain =
20k
5.5
SPEAKER
OUTPUT
200mA/div
SCL
2V/div
0.001
-100
-120
-140
0.01
-20
-40
-60
-80
0.1
20
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
0.1
10
V
R
INPUTS AC GROUNDED
DD
L
V
R
DD
L
WIDEBAND OUTPUT SPECTRUM
= 8Ω
= 32Ω
P
= 5V
= 5V
OUT
FIXED-FREQUENCY MODE
100
= 20mW
TURN-OFF RESPONSE
1
P
OUT
vs. FREQUENCY
FREQUENCY (MHz)
FREQUENCY (Hz)
= 40mW
10ms/div
10
1k
100
10k
LSP
MAX9796 toc24
) are ter-
1000
100k
SCL
2V/div
SPEAKER
OUTPUT
200mA/div
9