max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 11

• 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
SHUTDOWN WAVEFORM
= 20kΩ (A
= 5V, V
200μs/div
VSPKR
GND
= 12dB), R
= V
MAX9791 toc34
PGND
Typical Operating Characteristics (continued)
= V
HP_EN
2V/div
HP_
500mV/div
IN2
CPGND
= 40.2kΩ (A
HEADPHONE
= 0, I
LDO_OUT
VHP
= 0dB), C
= 0, C
-110
-130
-10
-30
-50
-70
-90
IN1
LDO
500
= 470nF, C
R
= 2 x 1µF, C1 = C2 = 1µF. R
L
= 32Ω
1000
HEADPHONE RF IMMUNITY
RIGHT
vs. FREQUENCY
LEFT
FREQUENCY (MHz)
1500
IN2
= C
2000
COM
= 1µF, measurement BW
2500
L
3000
= ∞, unless oth-
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