参数资料
型号: MAX9750CETI+
厂商: Maxim Integrated Products
文件页数: 30/30页
文件大小: 0K
描述: IC AMP AUDIO PWR 2.6W AB 28TQFN
标准包装: 60
系列: DirectDrive®
类型: AB 类
输出类型: 2-通道(立体声)带立体声耳机
在某负载时最大输出功率 x 通道数量: 2.2W x 2 @ 3 欧姆; 110mW x 2 @ 16 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,短路保护和热保护,关机,音量控制
安装类型: 表面贴装
供应商设备封装: 28-TQFN-EP(5x5)
封装/外壳: 28-WFQFN 裸露焊盘
包装: 管件
MAX9750/MAX9751/MAX9755
2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
9
OUTPUT POWER vs. SUPPLY VOLTAGE
(HEADPHONE MODE)
MAX9750/51
toc28
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(mW)
5.0
4.5
4.0
3.5
25
50
75
100
125
0
3.0
5.5
RL = 16
Ω
RL = 32
Ω
f = 1kHz
10
1k
10k
100
100k
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
MAX9750/51
toc29
FREQUENCY (Hz)
PSRR
(dB)
VRIPPLE = 200mVP-P
AV = 10.5dB
OUTPUT REFERRED
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10
100
1k
10k
100k
CROSSTALK vs. FREQUENCY
(HEADPHONE MODE)
MAX9750/51
toc30
FREQUENCY (Hz)
CROSSTALK
(dB)
VCC = 5V
VRIPPLE = 200mVP-P
RL = 32
Ω
LEFT TO RIGHT
RIGHT TO LEFT
-100
-80
-60
-40
-20
0
-120
OUTPUT POWER vs. CHARGE-PUMP
CAPACITANCE AND LOAD RESISTANCE
MAX9750/51
toc31
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
40
30
20
40
60
80
100
120
140
160
180
200
0
10
50
VDD = 5V
f = 1kHz
THD+N = 1%
C1 = C2 = 2.2
μF
C1 = C2 = 1
μF
Typical Operating Characteristics (continued)
(Measurement BW = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.)
OUTPUT POWER vs. LOAD RESISTANCE
(HEADPHONE MODE)
MAX9750/51
toc26
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
100
20
40
60
80
100
120
140
160
180
0
10
1000
THD+N = 10%
THD+N = 1%
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
MAX9750/51
toc27
OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
225
200
150 175
50 75 100 125
25
50
75
100
125
150
175
200
225
250
0
250
VDD = 5V
f = 1kHz
POUT = POUTL + POUTR
RL = 16
Ω
RL = 32
Ω
1000
100
10
0.1
1
0.01
0.001
070
80
20
30
40
50
60
10
90
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
MAX9750/51
toc25
OUTPUT POWER (mW)
THD+N
(%)
VDD = 3.3V
RL = 32
Ω
AV = 3dB
fIN = 10kHz
fIN = 1kHz
fIN = 20Hz
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