MAX9744ETH+ Maxim Integrated Products, MAX9744ETH+ Datasheet - Page 20

• Manufacturer Part Number: MAX9744ETH+
• Description: IC AMP AUDIO PWR 22.5W D 44TQFN
• Manufacturer: Maxim Integrated Products
• Type: Class Dr

Specifications of MAX9744ETH+

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 22.5W x 2 @ 4 Ohm
• Voltage - Supply: 4.5 V ~ 14 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 44-TQFN Exposed Pad
• Product: Class-D
• Output Power: 20 W
• Thd Plus Noise: 0.04 %
• Supply Current: 20 mA
• Maximum Power Dissipation: 2963 mW
• Maximum Operating Temperature: + 85 C
• Audio Load Resistance: 4 Ohms
• Minimum Operating Temperature: - 40 C
• Amplifier Class: D
• No. Of Channels: 2
• Supply Voltage Range: 4.5V To 14V
• Load Impedance: 4ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20W Stereo Class D Speaker Amplifier
with Volume Control
Table 7. Speaker Volume Levels (continued)
20
V5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
______________________________________________________________________________________
V4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
V3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
V2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
V1
1`
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
0
1
1
0
0
V0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
POSITION
VOLUME
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
VOLUME INPUT VOLTAGE (V)
0.506 x V
0.519 x V
0.532 x V
0.544 x V
0.557 x V
0.570 x V
0.583 x V
0.595 x V
0.608 x V
0.621 x V
0.633 x V
0.646 x V
0.659 x V
0.671 x V
0.684 x V
0.697 x V
0.710 x V
0.722 x V
0.735 x V
0.748 x V
0.760 x V
0.773 x V
0.786 x V
0.798 x V
0.811 x V
0.824 x V
0.837 x V
0.849 x V
0.862 x V
0.875 x V
0.887 x V
0.900 x V
SDA/VOL
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
ATTENUATION (dB)
VOLUME
MUTE
-17.5
-19.7
-21.6
-23.5
-25.2
-27.2
-29.8
-31.5
-33.4
-36.0
-37.6
-39.6
-42.1
-43.7
-45.6
-48.1
-50.6
-54.2
-56.7
-60.2
-62.7
-66.2
-68.7
-72.2
-74.7
-78.3
-80.8
-84.3
-86.8
-90.3
-92.8