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参数资料
| 型号： | MAX9725EEBC+TG45 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/17页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .025W STER 12UCSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | DirectDrive® |
| 类型： | AB 类 |
| 输出类型： | 耳机，2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 25mW x 2 @ 16 欧姆 |
| 电源电压： | 900 mV ~ 1.8 V |
| 特点： | 消除爆音，短路保护，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 12-UCSP（3x4） |
| 封装/外壳： | 12-WFBGA，WLCSP |
| 包装： | 带卷 (TR) |
MAX9725
1V, Low-Power, DirectDrive, Stereo Headphone
Amplifier with Shutdown
6
_______________________________________________________________________________________
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0
1020304050
POWER DISSIPATION
vs. OUTPUT POWER
MAX9725
toc16
OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
VDD = 1.5V
fIN = 1kHz
POUT = POUTL + POUTR
OUTPUTS IN-PHASE
RL = 16
Ω
RL = 32
Ω
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5
10
15
20
25
30
35
0
5
10
15
20
POWER DISSIPATION
vs. OUTPUT POWER
MAX9725
toc17
OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
VDD = 1V
fIN = 1kHz
POUT = POUTL + POUTR
OUTPUTS IN-PHASE
RL = 16
Ω
RL = 32
Ω
10
100
10k
1k
100k
GAIN FLATNESS
vs. FREQUENCY
FREQUENCY (Hz)
AMPLITUDE
(dB)
2
1
0
-1
-2
-3
-4
-5
-7
-6
-8
-9
-10
MAX9725
toc18
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40
10
20
30
40
50
OUTPUT POWER vs. CHARGE-PUMP
CAPACITANCE AND LOAD RESISTANCE
MAX9725
toc19
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
VDD = 1.5V
fIN = 1kHz
THD+N = 1%
C1 = C2 = 2.2
μF
C1 = C2 = 1
μF
C1 = C2 = 0.47
μF
C1 = C2 = 0.68
μF
-160
-140
-120
-100
-80
-60
-40
-20
0
5
10
15
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OUTPUT SPECTRUM
vs. FREQUENCY
MAX9725
toc20
FREQUENCY (kHz)
AMPLITUDE
(dB)
fIN = 1kHz
RL = 32
Ω
VOUT = -60dBV
VDD = 1.5V
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.9
1.1
1.0
1.2
1.3
1.4
1.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9725
toc21
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
NO LOAD
Typical Operating Characteristics (continued)
(VDD = 1.5V, VPGND = VSGND = 0V, VSHDN = 1.5V, VSS = VPVSS, C1 = C2 = 1F, CIN = 1F, THD+N measurement bandwidth = 22Hz
to 22kHz, TA = +25
°C, unless otherwise noted.) (See the Functional Diagrams.)
0
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10
5
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25
30
35
40
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50
0.9
1.1
1.3
1.5
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9725
toc13
SUPPLY VOLTAGE (V)
OUTPUT
POWER
(mW)
fIN = 1kHz
RL = 32
Ω
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 10%
THD+N = 1%
80
70
0
10
100
1k
OUTPUT POWER
vs. LOAD RESISTANCE
20
MAX9725
toc14
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
40
60
10
30
50
VDD = 1.5V
fIN = 1kHz
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 10%
THD+N = 1%
80
70
0
10
100
1k
OUTPUT POWER
vs. LOAD RESISTANCE
20
MAX9725
toc15
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
40
60
10
30
50
VDD = 1V
fIN = 1kHz
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 10%
THD+N = 1%
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