參數(shù)資料
型號(hào): MAX9700
廠商: Maxim Integrated Products, Inc.
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Single Audio Amplifier
中文描述: 單音頻放大器
文件頁數(shù): 5/19頁
文件大小: 532K
代理商: MAX9700
M
1.2W, Low-EMI, Filterless,
Class D Audio Amplifier
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(V
DD
= 3.3V, SYNC = GND (SSM), T
A
= +25°C, unless otherwise noted.)
10
0
0.5
1.0
1.5
2.0
2.5
3.0
1
0.1
0.01
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
M
COMMON-MODE VOLTAGE (V)
T
V
DD
= 3.3V
R
= 8
f = 1kHz
P
OUT
= 300mW
DIFFERENTIAL INPUT
EFFICIENCY vs. OUTPUT POWER
M
OUTPUT POWER (W)
E
1.2
0.9
0.6
0.3
10
20
30
40
50
60
70
80
90
100
0
0
1.5
R
L
= 4
R
L
= 8
V
DD
= 3.3V
f = 1kHz
EFFICIENCY vs. OUTPUT POWER
M
OUTPUT POWER (W)
E
2.0
1.5
0.5
10
20
30
40
50
60
70
80
90
100
0
0
3.0
R
L
= 8
R
L
= 4
V
DD
= 5V
f = 1kHz
1.0
2.5
0
30
20
10
50
40
90
80
70
60
100
2.5
3.0
3.5
SUPPLY VOLTAGE (V)
4.0
4.5
5.0
5.5
EFFICIENCY vs. SUPPLY VOLTAGE
M
E
R
L
= 8
f = 1kHz
P
OUT
= MAX (THD+N = 1%)
R
L
= 4
0
30
20
10
50
40
90
80
70
60
100
800
1000
1200
SYNC FREQUENCY (kHz)
1400
1800
1600
2000
EFFICIENCY
vs. SYNC INPUT FREQUENCY
M
E
V
= 3.3V
f = 1kHz
P
= 300mW
R
L
= 8
OUTPUT POWER vs.
SUPPLY VOLTAGE
M
SUPPLY VOLTAGE (V)
O
5.0
4.5
4.0
3.5
3.0
1.5
2.0
2.5
3.0
3.5
0
2.5
5.5
1.0
0.5
R
L
= 4
THD+N = 10%
R
= 4
THD+N = 1%
R
= 8
THD+N = 10%
R
L
= 8
THD+N = 1%
f = 1kHz
OUTPUT POWER vs. LOAD RESISTANCE
M
LOAD RESISTANCE (
)
O
90
80
70
60
50
40
30
20
10
400
800
1200
1600
2000
0
0
100
V
DD
= 5V
f = 1kHz
THD+N = 1%
V
DD
= 3.3V
0
-100
10
100
1k
10k
100k
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
-80
M
FREQUENCY (Hz)
C
-60
-40
-20
-30
-50
-70
-90
-10
INPUT REFERRED
V
IN
= 200mV
P-P
0
-100
10
100
1k
10k
100k
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-80
M
FREQUENCY (Hz)
P
-60
-40
-20
-30
-50
-70
-90
-10
OUTPUT REFERRED
INPUTS AC GROUNDED
V
DD
= 3.3V
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