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参数资料
| 型号： | MAX9752AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/29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) |
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MAX9752/MAX9753/MAX9754
Beep Input (MAX9752)
The MAX9752 features an audible alert beep input
(BEEP). BEEP serves as the alert signal detector and the
alert input to the amplifiers. AC-couple the alert output of
a C to BEEP. The MAX9752 monitors the signal at
BEEP. When a signal exceeding 400mVP-P with a fre-
quency greater than 300Hz is detected at BEEP, the
MAX9752 connects the signal to the amplifiers after eight
periods of the input signal. In speaker mode, the alert
signal appears at both speaker outputs, mixed with any
audio that may be present. In headphone mode, the alert
signal appears at the headphone outputs, mixed with
any audio that may be present. A signal with less than
eight input periods is ignored. Multiple BEEP signals can
be summed as shown in Figure 11. Adding external
resistors in series with BEEP increase the minimum volt-
age amplitude sensitivity.
Input Mux (MAX9753)
The MAX9753 features a 2:1 input multiplexer on each
amplifier, allowing input selection between two stereo
sources. The logic input IN1/2 controls both multiplexers.
A logic-high selects input IN_1 and a logic-low selects
input IN_2. The unselected inputs are high impedance.
Shutdown
The MAX9752/MAX9753/MAX9754 feature an 8A, low-
power shutdown mode reducing quiescent current con-
sumption and extending battery life. Driving SHDN low
disables the drive amplifiers, bias circuitry, charge
pump, and sets the headphone amplifier output imped-
ance to 1k
Ω, and drives BIAS to GND. Connect SHDN to
VDD for normal operation.
2.2W, Low-EMI, Stereo, Class D Power Amplifiers
with DirectDrive Headphone Amplifiers
20
______________________________________________________________________________________
MAX9752
VREF
DAC
HPVDD
VOL
Figure 9. MAX9752 Volume-Control Circuit
-80
-60
-70
-40
-50
-20
-30
-10
10
0
20
0
1.0
1.5
0.5
2.0
2.5
3.0
3.5
4.0
MAX9752B
VOLUME-CONTROL TRANSFER FUNCTION
VVOL (V)
GAIN
(dB)
AUDIO
TAPER POT
GAIN1 = GAIN2 = 0
SPEAKER MODE
HEADPHONE MODE
Figure 10b. MAX9752B Volume-Control Transfer Functions
-80
-60
-70
-40
-50
-20
-30
-10
10
0
20
0
1.0
1.5
0.5
2.0
2.5
3.0
3.5
4.0
MAX9752A
VOLUME-CONTROL TRANSFER FUNCTION
VVOL (V)
GAIN
(dB)
AUDIO
TAPER POT
GAIN1 = GAIN2 = 0
SPEAKER MODE
HEADPHONE MODE
Figure 10a. MAX9752A Volume-Control Transfer Functions
-80
-60
-70
-40
-50
-20
-30
-10
10
0
20
0
1.0
1.5
0.5
2.0
2.5
3.0
3.5
4.0
MAX9752C
VOLUME-CONTROL TRANSFER FUNCTION
VVOL (V)
GAIN
(dB)
AUDIO
TAPER POT
GAIN1 = GAIN2 = 0
SPEAKER MODE
HEADPHONE MODE
Figure 10c. MAX9752C Volume-Control Transfer Functions
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9752AEVKIT | 功能描述:放大器 IC 开发工具 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX9752BETI+ | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9752BETI+T | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9752CETI+ | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9752CETI+T | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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