max9742 Maxim Integrated Products, Inc., max9742 Datasheet - Page 9

• Manufacturer Part Number: max9742
• Description: Max9742 Single-/dual-supply, Stereo 16w, Class D Amplifier With Differential Inputs
• Manufacturer: Maxim Integrated Products, Inc.

100
-10
-15
-20
30
25
20
15
10
20
15
10
(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.)
90
80
70
60
50
40
30
20
10
-5
5
0
5
0
0
±10
20
0
SINGLE SUPPLY
R
L
SYSTEM POWER
DISSIPATION
DISSIPATION vs. OUTPUT POWER
= 8Ω
±12
A
10
EFFICIENCY AND POWER
I
DD
EFFICIENCY
vs. SUPPLY VOLTAGE
25
vs. SUPPLY VOLTAGE
= +25°C, unless otherwise noted. See Figure 1 for test circuits, see Typical Application Circuits/Functional Diagrams for
10% THD+N
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
OUTPUT POWER
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
I
SS
±14
20
DUAL SUPPLY
OUTPUT FILTER REMOVED
NO LOAD CONNECTED
V
DD
30
Class D Amplifier with Differential Inputs
1% THD+N
BTL CONFIGURATION
V
R
f
= |V
IN
_______________________________________________________________________________________
DD
L
±16
30
= 8Ω
= 1kHz
SS
= 24V
|
35
±18
40
MAX9742 toc26
±20
40
50
10
9
8
7
6
5
4
3
2
1
0
Single-/Dual-Supply, Stereo 16W,
Typical Operating Characteristics (continued)
30
25
20
15
10
30
25
20
15
10
18
17
16
15
14
13
12
5
0
5
0
±10
20
20
SINGLE SUPPLY
R
SINGLE SUPPLY
OUTPUT FILTER REMOVED
INPUTS GROUNDED
NO LOAD CONNECTED
DUAL SUPPLY
R
L
10% THD+N
L
= 4Ω
= 8Ω
10% THD+N
±12
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
25
vs. SUPPLY VOLTAGE
25
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
1% THD+N
±14
30
30
1% THD+N
±16
35
35
±18
±20
40
40
-10
-20
-30
-40
-50
-60
25
20
15
10
45
40
35
30
25
20
15
10
10
5
0
5
0
0
±10
±10
20
BTL CONFIGURATION
R
10% THD+N
10% THD+N
L
= 8Ω
SHUTDOWN SUPPLY CURRENT
±12
±12
22
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
1% THD+N
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
I
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
SS
±14
±14
I
24
DD
1% THD+N
DUAL SUPPLY
V
OUTPUT FILTER REMOVED
INPUTS GROUNDED
NO LOAD CONNECTED
DD
±16
= |V
±16
26
SS
±18
|
DUAL SUPPLY
R
L
= 4Ω
±18
28
±20
±20
±22
30
9