MAX9789 MAXIM [Maxim Integrated Products], MAX9789 Datasheet - Page 11

• Manufacturer Part Number: MAX9789
• Description: Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers
• Manufacturer: MAXIM [Maxim Integrated Products]

Windows Vista-Compliant, Stereo Class AB Speaker
(V
∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A
unless otherwise noted. Headphone mode: SPKR_EN = 1, HP_EN = 0. Speaker mode: SPKR_EN = 0, HP_EN = 1.)
DD
= PV
Amplifiers and DirectDrive Headphone Amplifiers
DD
= CPV
-0.05
-0.10
0.10
0.05
0.3
0.2
0.1
0
0
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
DD
4.50
______________________________________________________________________________________
0
SPKR_EN = 5V
HP_EN = 0
LDO_EN = 0 (MAX9789)
HEADPHONE SHUTDOWN WAVEFORM
V
I
LDO_OUT
= HPV
LDO OUTPUT VOLTAGE ACCURACY
LDO_OUT
vs. AMPLIFIER OUTPUT POWER
0.5
AMPLIFIER OUTPUT POWER (W)
4.75
= 0A
= 4.75V
DD
SUPPLY VOLTAGE (V)
1.0
= LDO_EN = +5V, V
20ms/div
5.00
1.5
2.0
5.25
MAX9789 toc39
2.5
Typical Operating Characteristics (continued)
5.50
GND
3.0
VSP
HP_EN
5V/div
HP_
500mV/div
= V
= 10dB, A
PGND
= V
VHP
CPGND
= 3.5dB), measurement BW = 20kHz AES17, T
-0.5
-1.0
-1.5
-2.0
-0.5
-1.0
-1.5
-2.0
= V
2.0
1.5
1.0
0.5
2.0
1.5
1.0
0.5
20
15
10
-5
0
0
5
0
4.50
-40
LDO_SET
0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
V
SPKR_EN = 1
I
LDO_OUT
LDO OUTPUT VOLTAGE ACCURACY
HP_EN = 1
LDO_OUT
LDO OUTPUT VOLTAGE ACCURACY
SPKR_EN = 0
HP_EN = 1
25
-15
4.75
= 1mA
= 4.75V
= 0V, C1 = C2 = C
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
50
10
vs. I
I
LOAD
5.00
75
LOAD
(mA)
SPKR_EN = 0
HP_EN = 0
35
SPKR_EN = 1
HP_EN = 0
100
5.25
60
125
BIAS
= C
5.50
150
85
IN
= 1µF. R
A
= +25°C,
L
=
11