MAX9742ETX+ Maxim Integrated Products, MAX9742ETX+ Datasheet - Page 7

• 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

(24V single-supply mode, ±15V dual-supply mode, both channels driven in phase, THD+N measurement bandwidth = 22Hz to
22kHz, T
test circuit component values.)
0.001
0.001
0.001
0.01
0.01
100
0.01
100
100
0.1
0.1
0.1
10
10
10
1
1
1
100
0
0
BTL CONFIGURATION
V
R
f = 1kHz
SINGLE SUPPLY
V
R
BTL CONFIGURATION
V
R
T
A
DD
L
DD
L
A
DD
L
PLUS NOISE vs. OUTPUT POWER
PLUS NOISE vs. OUTPUT POWER
= 8Ω
= 8Ω
TOTAL HARMONIC DISTORTION
f = 1kHz
TOTAL HARMONIC DISTORTION
= 8Ω
= 40°C
TOTAL HARMONIC DISTORTION
= +25°C, unless otherwise noted. See Figure 1 for test circuits, see Typical Application Circuits/Functional Diagrams for
= 24V
= 24V
= 24V
PLUS NOISE vs. FREQUENCY
P
10
10
OUT
OUTPUT POWER (W)
OUTPUT POWER (W)
1k
= 5W
FREQUENCY (Hz)
Class D Amplifier with Differential Inputs
_______________________________________________________________________________________
20
20
f = 100Hz
P
OUT
f = 100Hz
= 3W
10k
30
30
100k
40
40
Single-/Dual-Supply, Stereo 16W,
0.001
0.01
0.01
0.01
Typical Operating Characteristics (continued)
100
100
100
0.1
0.1
0.1
10
10
10
1
1
1
100
100
0
DUAL SUPPLY
R
SINGLE SUPPLY
V
R
SINGLE SUPPLY
V
R
T
L
DD
L
DD
L
A
f = 1kHz
PLUS NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
= 8Ω
TOTAL HARMONIC DISTORTION
= 4Ω
= 8Ω
= 40°C
= 24V
PLUS NOISE vs. FREQUENCY
PLUS NOISE vs. FREQUENCY
OUTPUT POWER PER CHANNEL (W)
= 24V
P
P
OUT
OUT
1k
1k
5
= 9W
FREQUENCY (Hz)
FREQUENCY (Hz)
= 8W
f = 100Hz
P
OUT
P
OUT
= 5W
= 4W
10k
10k
10
100k
100k
15
0.001
0.01
0.01
0.01
100
100
100
0.1
0.1
0.1
10
10
10
1
1
1
100
100
0
DUAL SUPPLY
R
BTL CONFIGURATION
V
R
SINGLE SUPPLY
V
R
T
L
DD
L
DD
L
A
PLUS NOISE vs. OUTPUT POWER
= 4Ω
= 8Ω
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
= 8Ω
= 40°C
f = 1kHz
= 24V
PLUS NOISE vs. FREQUENCY
PLUS NOISE vs. FREQUENCY
= 24V
OUTPUT POWER PER CHANNEL (W)
P
OUT
5
P
OUT
1k
1k
= 17W
FREQUENCY (Hz)
FREQUENCY (Hz)
= 13W
P
f = 100Hz
OUT
10
P
OUT
= 12W
= 8W
10k
10k
15
100k
100k
20
7