參數(shù)資料
型號： MAX9752CETI+T
廠商： Maxim Integrated Products
文件頁數(shù)： 13/29頁
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 1.7W D 28TQFN
標準包裝： 2,500
系列： DirectDrive®
類型： D 類
輸出類型： 2-通道（立體聲）帶立體聲耳機
在某負載時最大輸出功率 x 通道數(shù)量： 1.7W x 2 @ 4 歐姆; 62mW x 2 @ 16 歐姆
電源電壓： 4.5 V ~ 5.5 V
特點： 消除爆音，短路保護和熱保護，關(guān)機，音量控制
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（5x5）
封裝/外殼： 28-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9753ETI+ 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9753ETI+T 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9754ETI+ 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9754ETI+T 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9755ETI+ 功能描述:音頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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