max9700beub Maxim Integrated Products, Inc., max9700beub Datasheet - Page 5

• Manufacturer Part Number: max9700beub
• Description: 1.2w, Low-emi, Filterless, Class D Audio Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

(V
DD
2000
1600
1200
0.01
800
400
0.1
100
10
= 3.3V, SYNC = GND (SSM), T
90
80
70
60
50
40
30
20
10
1
0
0
TOTAL HARMONIC DISTORTION PLUS NOISE
2.5
0
OUTPUT POWER vs. LOAD RESISTANCE
0
V
R
f = 1kHz
P
DIFFERENTIAL INPUT
EFFICIENCY vs. SUPPLY VOLTAGE
DD
L
OUT
10
= 8
vs. COMMON-MODE VOLTAGE
3.0
= 3.3V
0.5
= 300mW
20
V
COMMON-MODE VOLTAGE (V)
DD
LOAD RESISTANCE ( )
SUPPLY VOLTAGE (V)
30
= 5V
3.5
1.0
V
R
_______________________________________________________________________________________
40
DD
L
P
= 4
OUT
= 3.3V
4.0
50
1.5
= MAX (THD+N = 1%)
60
4.5
2.0
70
f = 1kHz
THD+N = 1%
R
L
= 8
80
f = 1kHz
5.0
2.5
A
90
= +25°C, unless otherwise noted.)
5.5
100
3.0
-100
Typical Operating Characteristics (continued)
-10
-20
-30
-40
-50
-60
-70
-80
-90
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
800
10
0
INPUT REFERRED
V
COMMON-MODE REJECTION RATIO
IN
EFFICIENCY vs. OUTPUT POWER
1000
= 200mV
vs. SYNC INPUT FREQUENCY
0.3
100
1.2W, Low-EMI, Filterless,
R
SYNC FREQUENCY (kHz)
L
1200
P-P
OUTPUT POWER (W)
vs. FREQUENCY
= 8
FREQUENCY (Hz)
EFFICIENCY
0.6
Class D Audio Amplifier
1400
1k
0.9
1600
R
V
f = 1kHz
P
R
L
DD
OUT
L
10k
= 4
= 8
V
f = 1kHz
= 3.3V
DD
1.2
= 300mW
1800
= 3.3V
2000
100k
1.5
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
100
3.5
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
20
10
0
0
0
2.5
10
0
OUTPUT REFERRED
INPUTS AC GROUNDED
V
f = 1kHz
POWER-SUPPLY REJECTION RATIO
DD
EFFICIENCY vs. OUTPUT POWER
R
THD+N = 10%
= 3.3V
L
3.0
0.5
= 8
R
100
L
OUTPUT POWER vs.
= 4
SUPPLY VOLTAGE
R
THD+N = 1%
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
vs. FREQUENCY
1.0
L
3.5
FREQUENCY (Hz)
= 4
R
4.0
1k
1.5
L
R
THD+N = 10%
= 8
L
= 4
2.0
4.5
R
THD+N = 1%
L
10k
= 8
V
f = 1kHz
DD
5.0
2.5
= 5V
100k
3.0
5.5
5