MAX9789AETJ+ Maxim Integrated Products, MAX9789AETJ+ Datasheet - Page 12

• Manufacturer Part Number: MAX9789AETJ+
• Description: IC AMP AUDIO 2W STER AB 32TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9789AETJ+

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2W x 2 @ 4 Ohm; 100mW x 2 @ 16 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Product: Class-AB
• Output Power: 2 W
• Thd Plus Noise: 0.004 %
• Supply Current: 0.1 mA
• Maximum Power Dissipation: 1990 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 4 Ohms
• Minimum Operating Temperature: - 40 C
• Amplifier Class: AB
• No. Of Channels: 3
• Supply Voltage Range: 4.5V To 5.5V
• Load Impedance: 4ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• For Use With: MAX9789AEVKIT+ - EVALUATION KIT FOR MAX9789A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.)
12
DD
100
90
80
70
60
50
40
30
20
10
______________________________________________________________________________________
= PV
0
0
DD
DROPOUT VOLTAGE vs. I
25
= CPV
LINE-TRANSIENT RESPONSE
LDO SHUTDOWN RESPONSE
50
V
LDO_OUT
DD
I
LOAD
= HPV
75
200ms/div
(mA)
1ms/div
= 4.75V
V
LDO_OUT
100
DD
= LDO_EN = +5V, V
LOAD
125
= 3.3V
I
LOAD
MAX9789 toc48
MAX9789 toc50
= 0mA
150
V
1V/div
5.5V
4.5V
LDO_OUT
(AC-COUPLED)
20mV/div
LDO_EN
2V/div
V
2V/div
DD
LDO_OUT
-10
-20
-30
-40
-50
-60
-70
-80
-90
Typical Operating Characteristics (continued)
0
10
GND
RIPPLE REJECTION vs. FREQUENCY
VSP
V
= V
LDO_OUT
= 10dB, A
100
PGND
FREQUENCY (Hz)
= 4.75V
= V
V
1k
VHP
LDO_OUT
CPGND
V
I
OUTPUT REFERRED
OUT
RIPPLE
= 3.5dB), measurement BW = 20kHz AES17, T
= 10mA
= 3.3V
10k
= 200mV
= V
-100
-110
-120
-20
-30
-40
-50
-60
-70
-80
-90
LDO_SET
10
P-P
100k
LDO LOAD-TRANSIENT RESPONSE
LDO CROSSTALK vs. FREQUENCY
RIGHT SPEAKER TO LDO
LEFT SPEAKER TO LDO
= 0V, C1 = C2 = C
100
FREQUENCY (Hz)
0.01
0.1
10
1
20ms/div
10
1k
OUTPUT NOISE vs. FREQUENCY
V
P
R
I
OUT
LDO_OUT
OUT
L
= 4Ω
100
= 0mA
10k
= 2W
BIAS
MAX9789 toc49
FREQUENCY (Hz)
= 4.75V
= C
1k
100k
I
15mA/div
AC-COUPLED
V
10mV/div
IN
LDO_OUT
LDO_OUT
= 1µF. R
A
= +25°C,
10k
L
=
100k