参数资料
型号: MAX9792AETI+T
厂商: Maxim Integrated Products
文件页数: 3/34页
文件大小: 0K
描述: IC AMP AUDIO 3.7W MONO D 28TQFN
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: D 类
输出类型: 1-通道(单声道),带立体声耳机
在某负载时最大输出功率 x 通道数量: 3.7W x 1 @ 3 欧姆; 180mW x 2 @ 32 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,LDO,短路保护和热保护,关机
安装类型: 表面贴装
供应商设备封装: 28-TQFN-EP(4x4)
封装/外壳: 28-WFQFN 裸露焊盘
包装: 带卷 (TR)
MAX9791/MAX9792
HEADPHONE OUTPUT POWER
vs. HPVDD
MAX9791
toc29
HPVDD (V)
HEADPHONE
OUTPUT
POWER
(mW)
5.0
4.5
4.0
3.5
3.0
50
100
150
200
250
0
2.5
5.5
THD+N = 1%
f = 1kHz
RL = 32
RL = 16
Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
______________________________________________________________________________________
11
OUTPUT POWER vs. LOAD RESISTANCE
(HEADPHONE MODE)
MAX9791
toc26
LOAD RESISTANCE (
)
OUTPUT
POWER
(mW)
100
50
70
90
0
60
80
10
30
20
40
10
1000
VHPVDD = 3V
f = 1kHz
THD+N = 10%
THD+N = 1%
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
MAX9791
toc27
PER CHANNEL OUTPUT POWER (mW)
POWER
DISSIPATION
PER
CHANNEL
(mW)
50
100
150
200
250
300
50
100
150
350
400
0
200
25
75
125
175
RL = 32
RL = 16
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
MAX9791
toc28
PER CHANNEL OUTPUT POWER (mW)
POWER
DISSIPATION
PER
CHANNEL
(mW)
20
100
150
200
50
250
300
0
0100
80
40
60
RL = 32
VHPVDD = 3V
RL = 16
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
MAX9791
toc30
FREQUENCY (kHz)
PSRR
(dB)
0.1
1
10
-90
-80
-110
-100
-50
-40
-30
-70
-60
-20
-10
0
-120
0.01
100
VRIPPLE = 200mVP-P
RL = 32
LEFT
RIGHT
CROSSTALK vs. FREQUENCY
(HEADPHONE MODE)
MAX9791
toc31
FREQUENCY (kHz)
CROSSTALK
(dB)
0.1
1
10
-90
-80
-50
-40
-30
-70
-60
-20
-100
0.01
100
RIGHT TO LEFT
COM AND SENSE
DISABLED
RIGHT TO LEFT
COM AND SENSE
DISABLED
LEFT TO RIGHT
COM AND SENSE
RL = 32
FS = 300mVRMS
VIN = -20dBFS
RIGHT TO LEFT
COM AND SENSE
Typical Operating Characteristics (continued)
(VAVDD = VPVDD = VHPVDD = 5V, VGND = VPGND = VCPGND = 0, ILDO_OUT = 0, CLDO = 2 x 1F, C1 = C2 = 1F. RL = ∞, unless oth-
erwise specified. RIN1 = 20k (AVSPKR = 12dB), RIN2 = 40.2k (AVHP = 0dB), CIN1 = 470nF, CIN2 = CCOM = 1F, measurement BW
= 20kHz AES17, TA = +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
HP_EN = 1.)
HEADPHONE
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