MAX9742ETX+ Maxim Integrated Products, MAX9742ETX+ Datasheet - Page 10

• 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

Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
(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.)
10
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
-90
1.0
0.8
0.6
0.4
0.2
0
0
0
______________________________________________________________________________________
20
10
10
SINGLE SUPPLY
INPUTS AC GROUNDED
NO LOAD CONNECTED
DUAL SUPPLY
R
A
POWER-SUPPLY REJECTION RATIO
DUAL SUPPLY
R
P
L
L
OUT
= 8Ω
V
= +25°C, unless otherwise noted. See Figure 1 for test circuits, see Typical Application Circuits/Functional Diagrams for
SHUTDOWN SUPPLY CURRENT
= 8Ω
SS
CROSSTALK vs. FREQUENCY
R INTO L
= 1W
= -15V + 500mV
100
100
vs. SUPPLY VOLTAGE
25
SUPPLY VOLTAGE (V)
vs. FREQUENCY
FREQUENCY (Hz)
FREQUENCY (Hz)
L INTO R
30
1k
1k
P-P
V
DD
= 15V + 500mV
10k
10k
35
P-P
100k
100k
40
-100
-120
-100
-120
-100
-120
-20
-40
-60
-80
-20
-40
-60
-80
Typical Operating Characteristics (continued)
-20
-40
-60
-80
20
20
0
0
0
0.1
10
10
SINGLE SUPPLY
V
R
SINGLE SUPPLY
R
P
POWER-SUPPLY REJECTION RATIO
DD
L
L
OUT
WIDEBAND OUTPUT SPECTRUM
= 8Ω
= 8Ω
= 24V + 500mV
CROSSTALK vs. FREQUENCY
= 1W
MID PSRR
100
100
vs. FREQUENCY
1.0
FREQUENCY (MHz)
FREQUENCY (Hz)
FREQUENCY (Hz)
OUT_ PSRR
R INTO L
P-P
1k
1k
RBW = 10kHz
MEASURED AT SINGLE-
ENDED FILTER OUTPUT
INPUTS AC GROUNDED
L INTO R
10
10k
10k
100k
100k
100
FILTERED
20V/div
V
2V/div
5V/div
V
V
SHDN
OUT_
OUT_
-100
-120
-100
-20
-40
-60
-80
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
10
0
SINGLE SUPPLY
R
f
V
BTL
V
R
DUAL SUPPLY
R
IN
POWER-SUPPLY REJECTION RATIO
L
OUT_
DD
L
L
= 8Ω
= 1kHz
= 8Ω
= 8Ω
= 24V + 500mV
= -60dBV
OUTPUT SPECTRUM FFT
100
5k
EXITING SHUTDOWN
vs. FREQUENCY
(DUAL SUPPLY)
FREQUENCY (Hz)
FREQUENCY (Hz)
20ms/div
P-P
10k
1k
15k
10k
MAX9742 toc43
100k
20k