MAX9742ETX+ Maxim Integrated Products, MAX9742ETX+ Datasheet - Page 31

• Manufacturer Part Number: MAX9742ETX+
• Description: IC AMP AUDIO PWR 20.5W D 36TQFN
• Manufacturer: Maxim Integrated Products
• Type: Class Dr

Specifications of MAX9742ETX+

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 20.5W x 2 @ 8 Ohm
• Voltage - Supply: 20 V ~ 40 V, ±10 V ~ 20 V
• Features: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 36-TQFN Exposed Pad
• Product: Class-D
• Output Power: 16 W
• Thd Plus Noise: 0.08 %
• Supply Current: 15 mA
• Maximum Power Dissipation: 2.86 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 4 Ohms
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RIGHT NEGATIVE
RIGHT POSITIVE
LEFT NEGATIVE
LEFT POSITIVE
AUDIO INPUT
AUDIO INPUT
AUDIO INPUT
AUDIO INPUT
C
C
C
C
IN
IN
IN
IN
Class D Amplifier with Differential Inputs
______________________________________________________________________________________
R
R
R
R
IN1
IN2
IN2
IN1
R
R
F2
F2
C
C
FBL
FBR
DUAL SUPPLY CONFIGURATION
Single-/Dual-Supply, Stereo 16W,
INL-
INL+
MID
INR+
INR-
C
C
FBL
FBR
FBR
FBL
-10V TO -20V
10V TO 20V
Simplified Block Diagram (continued)
R
V
V
F1
DD
SS
R
F1
SHDN
MODULATOR AND
MODULATOR AND
CONTROL LOGIC/
OFF
HALF-BRIDGE
HALF-BRIDGE
SEQUENCING
POWER-UP
CLASS D
CLASS D
ON
MAX9742
SFT
C
SFT
OUTR
OUTL
L
L
F
F
C
C
F
F
C
C
R
R
ZBL
ZBL
ZBL
ZBL
31