参数资料
型号: MAX9752AETI+T
厂商: Maxim Integrated Products
文件页数: 23/29页
文件大小: 0K
描述: IC AMP AUDIO PWR 2.2W D 28TQFN
标准包装: 2,500
系列: DirectDrive®
类型: D 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 @ 4 欧姆; 62mW 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: 带卷 (TR)
MAX9752/MAX9753/MAX9754
2.2W, Low-EMI, Stereo, Class D Power Amplifiers
with DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = PVDD = HPVDD = CPVDD = +5.0V, GND = PGND = HPGND = 0V, VSHDN = VDD, CPVSS = VSS, CBIAS = 1F,
CCPVSS = 1F, C1 = 1F, speaker impedance = 8
Ω connected between OUT_+ and OUT_-, headphone load is terminated to GND;
MAX9752: GAIN1 = GAIN2 = 0, VVOL = 0V; MAX9753: GAIN = 0, VA/B = 0V; MAX9754: GAIN = 0; TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GAIN2 = 0, GAIN1 = 0
9.0
GAIN2 = 0, GAIN1 = 1
10.5
GAIN2 = 1, GAIN1 = 0
12.0
MAX9752A
GAIN2 = 1, GAIN1 = 1
13.5
GAIN2 = 0, GAIN1 = 0
15.0
GAIN2 = 0, GAIN1 = 1
16.5
GAIN2 = 1, GAIN1 = 0
18.0
MAX9752B
GAIN2 = 1, GAIN1 = 1
19.5
GAIN2 = 0, GAIN1 = 0
6.0
GAIN2 = 0, GAIN1 = 1
7.5
GAIN2 = 1, GAIN1 = 0
9.0
MAX9752C
GAIN2 = 1, GAIN1 = 1
10.5
GAIN = 1
9.0
Speaker Amplifier Gain (Note 4)
AV_SP
MAX9753/MAX9754
GAIN = 0
10.5
dB
MAX9752A,
MAX9752B, MAX9753,
MAX9754
1.3
f = 1kHz, THD+N
= 1%, TA = +25°C,
RL = 8
Ω
MAX9752C
0.8
MAX9752A,
MAX9752B, MAX9753,
MAX9754
2.2
Output Power
POUT_SP
f = 1kHz, THD+N
= 1%, TA = +25°C,
RL = 4
Ω
MAX9752C
1.7
W
RL = 8
Ω
0.023
Total Harmonic Distortion Plus
Noise
THD+N
f = 1kHz, POUT = 1W
RL = 4
Ω
0.03
%
Unweighted
90
Signal-to-Noise Ratio
SNR
POUT = 1W, f = 1kHz,
BW = 22Hz to 22kHz
A-weighted
91
dB
Into shutdown
-47
Click-and-Pop Level (Note 5)
KCP
Out of shutdown
-34
dBV
Capacitive-Load Drive
CL_MAX
Differential
200
pF
Switching Frequency
fSW
1000
1200
1400
kHz
Crosstalk
Channel to channel, f = 10kHz, POUT = 1W
70
dB
Off-Isolation
MAX9753, unselected input to any active
input, f = 10kHz
70
dB
Efficiency
η
RL = 8
Ω, POUT = 1W, f = 1kHz
85
%
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