max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 15

• Manufacturer Part Number: max9791
• Description: Windows Vista-compliant Class D Speaker Amplifiers With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

(V
erwise specified. R
= 20kHz AES17, T
HP_EN = 1.)
Amplifiers with DirectDrive Headphone Amplifiers
AVDD
= V
PVDD
= V
A
IN1
Windows Vista-Compliant Class D Speaker
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
______________________________________________________________________________________
HPVDD
= 20kΩ (A
LINE-TRANSIENT RESPONSE
= 5V, V
SHUTDOWN RESPONSE
VSPKR
1.00ms/div
200μs/div
GND
= 12dB), R
= V
PGND
MAX9791 toc50
MAX9791 toc52
Typical Operating Characteristics (continued)
= V
IN2
CPGND
= 40.2kΩ (A
CH2 HIGH
1.000mV
CH1 LOW
4.560V
CH1 HIGH
5.500V
CH2 LOW
800.0μV
V
2V/div
LDO_EN
2V/div
LDO_EN
= 0, I
LDO
LDO_OUT
VHP
= 0dB), C
= 0, C
-100
-110
-120
-130
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
IN1
0.01
LDO
BOTH SPEAKERS WITH SIGNAL
P
R
I
LDO
SPKR
LSPKR
= 470nF, C
= 2 x 1µF, C1 = C2 = 1µF. R
= 10mA
LOAD-TRANSIENT RESPONSE
CROSSTALK vs. FREQUENCY
= 1.2W
= 8W
RIGHT CHANNEL TO LDO
0.1
SPEAKER TO LDO
FREQUENCY (kHz)
LEFT CHANNEL TO LDO
100ms/div
IN2
1
= C
COM
10
= 1µF, measurement BW
MAX9791 toc51
100
L
AC-COUPLED
V
10mV/div
I
50mV/div
= ∞, unless oth-
LDO_OUT
LDO_OUT
15