Typical operating characteristics (continued), General – Rainbow Electronics MAX9792 User Manual
Page 13
MAX9791/MAX9792
Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
______________________________________________________________________________________
13
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9791 toc42
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
4.75
5.00
0
5
10
15
20
-5
4.50
5.50
5.25
LDO_EN = 1
SPKR_EN = 1
HP_EN = 0
SPKR_EN = 0
HP_EN = 1
SPKR_EN = 0
HP_EN = 0
SPKR_EN = 1
HP_EN = 1
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
MAX9791 toc43
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (
μ
A)
4.75
5.00
0.04
0.08
0.12
0.16
0.20
0
4.50
5.50
5.25
SPKR_EN = 1
HP_EN = 0
LDO_EN = 0
Typical Operating Characteristics (continued)
(V
AVDD
= V
PVDD
= V
HPVDD
= 5V, V
GND
= V
PGND
= V
CPGND
= 0, I
LDO_OUT
= 0, C
LDO
= 2 x 1µF, C1 = C2 = 1µF. R
L
=
∞, unless oth-
erwise specified. R
IN1
= 20k
Ω (A
VSPKR
= 12dB), R
IN2
= 40.2k
Ω (A
VHP
= 0dB), C
IN1
= 470nF, C
IN2
= C
COM
= 1µF, measurement BW
= 20kHz AES17, T
A
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
HP_EN = 1.)
GENERAL