max9789a Maxim Integrated Products, Inc., max9789a Datasheet - Page 10

• Manufacturer Part Number: max9789a
• Description: Windows Vista-compliant, Stereo Class Ab Speaker Amplifiers And Directdrive Headphone Amplifiers Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
(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.)
10
DD
______________________________________________________________________________________
= PV
DD
= CPV
DD
-0.5
-1.0
-1.5
-2.0
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
2.0
1.5
1.0
0.5
20
15
10
-5
0
= HPV
5
0
0
4.50
-40
0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
V
SPKR_EN = 1
I
LDO OUTPUT VOLTAGE ACCURACY
LDO_OUT
LDO_OUT
HP_EN = 1
LDO OUTPUT VOLTAGE ACCURACY
SPKR_EN = 0
HP_EN = 1
DD
25
-15
4.75
= LDO_EN = +5V, GND = PGND = CPGND = LDO_SET = 0V, C1 = C2 = C
= 1mA
= 4.75V
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
Typical Operating Characteristics (continued)
5.25
60
125
VSP
= 10dB, A
150
5.50
85
VHP
= 3.5dB), measurement BW = 20kHz AES17, T
-0.05
-0.10
0.10
0.05
100
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
0
0
0
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
4.50
0
0
SPKR_EN = 5V
HP_EN = 0
LDO_EN = 0 (MAX9789A)
V
I
LDO_OUT
LDO OUTPUT VOLTAGE ACCURACY
LDO_OUT
vs. AMPLIFIER OUTPUT POWER
DROPOUT VOLTAGE vs. I
0.5
25
AMPLIFIER OUTPUT POWER (W)
4.75
= 0A
= 4.75V
SUPPLY VOLTAGE (V)
1.0
50
V
LDO_OUT
I
LOAD
5.00
1.5
75
(mA)
= 4.75V
V
LDO_OUT
100
2.0
5.25
LOAD
BIAS
125
2.5
= 3.3V
= C
5.50
150
3.0
IN
A
= 1µF. R
= +25°C,
L
= ,