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參數(shù)資料
| 型號： | MAX4365 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.4W and 1W, Ultra-Small, Audio Power Amplifiers with Shutdown |
| 中文描述： | 1.4W及1W、超小型、音頻功率放大器，帶有關(guān)斷 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 682K |
| 代理商： | MAX4365 |
M
Clickless/Popless Operation
Proper selection of AC-coupling capacitors (C
IN
) and
C
BIAS
achieves clickless/popless shutdown and startup.
The value of C
BIAS
determines the rate at which the
midrail bias voltage rises on startup and falls when enter-
ing shutdown. The size of the input capacitor also affects
clickless/popless operation. On startup, C
IN
is charged
to its quiescent DC voltage through the feedback resistor
(R
F
) from the output. This current creates a voltage tran-
sient at the amplifier
’
s output, which can result in an
audible pop. Minimizing the size of C
IN
reduces this
effect, optimizing click-and-pop suppression.
Supply Bypassing
Proper supply bypassing ensures low-noise, low-distor-
tion performance. Place a 0.1μF ceramic capacitor in
parallel with a 10μF ceramic capacitor from V
CC
to
GND. Locate the bypass capacitors as close to the
device as possible.
Adding Volume Control
The addition of a digital potentiometer provides simple
volume control. Figure 3 shows the MAX4364/MAX4365
with the MAX5407 log taper digital potentiometer used
as an input attenuator. Connect the high terminal of the
MAX5407 to the audio input, the low terminal to ground
and the wiper to C
IN
. Setting the wiper to the top posi-
tion passes the audio signal unattenuated. Setting the
wiper to the lowest position fully attenuates the input.
Layout Considerations
Good layout improves performance by decreasing the
amount of stray capacitance and noise at the amplifier
’
s
inputs and outputs. Decrease stray capacitance by min-
imizing PC board trace lengths, using surface-mount
components and placing external components as close
to the device as possible. Also refer to the
Power
Dissipation
section for heatsinking considerations.
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
12
______________________________________________________________________________________
OUT+
AUDIO
INPUT
OUT-
IN-
1 H
W 3
C
IN
R
F
R
IN
4 L
MAX4364
MAX4365
MAX5407
Figure 3. MAX4364/MAX4365 and MAX5160 Volume Control
Circuit
Chip Information
MAX4364 TRANSISTOR COUNT: 772
MAX4365 TRANSISTOR COUNT: 768
PROCESS: BiCMOS
V
CC
OUT+
IN-
1
2
8
7
OUT-
GND
BIAS
IN+
SHDN
SO
TOP VIEW
3
4
6
5
MAX4364
V
CC
OUT+
IN-
1
2
8
7
OUT-
SHDN
IN+
GND
BIAS
μ
MAX/QFN
3
4
6
5
MAX4365
Pin Configurations
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4364 | 1.4W and 1W, Ultra-Small, Audio Power Amplifiers with Shutdown |
| MAX4364ESA | 1.4W and 1W, Ultra-Small, Audio Power Amplifiers with Shutdown |
| MAX4365ETA | 1.4W and 1W, Ultra-Small, Audio Power Amplifiers with Shutdown |
| MAX4365EUA | 1.4W and 1W, Ultra-Small, Audio Power Amplifiers with Shutdown |
| MAX4372FEUK-T | Low-Cost, SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4365EGA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4365ETA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4365ETA+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4365ETA+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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX4365ETA-T | 功能描述:音頻放大器 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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