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參數(shù)資料
| 型號： | MAX4367ETA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR .33W MONO 8TDFN |
| 標準包裝： | 2,500 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 330mW x 1 @ 16 歐姆 |
| 電源電壓： | 2.3 V ~ 5.5 V |
| 特點： | 消除爆音，關機，熱保護 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 8-TDFN-EP（3x3） |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
Wireless-Phone Headset Application
Many wireless telephones feature an earbud speaker/in-
line microphone combination for hands-free use. One
common solution is to use a BTL amplifier that drives the
internal speaker and an earplug jack that mutes the inter-
nal speaker by physically disconnecting OUT- when a
headset is plugged in (Figure 7). The headset is driven
single-endedly, requiring an output-coupling capacitor,
COUT, and resulting in a 4x reduction in output power.
Adding Volume Control
The addition of a digital potentiometer provides simple
volume control. Figure 8 shows the MAX4367/MAX4368
with the MAX5160 digital potentiometer used as an
input attenuator. Connect the high terminal of the
MAX5160 to the audio input, the low terminal to ground
and the wiper to CIN. Setting the wiper to the top posi-
tion passes the audio signal unattenuated. Setting the
wiper to the lowest position fully attenuates the input.
Use the 100k
Ω version of the MAX5160.
Layout Considerations
Good layout improves performance by decreasing the
amount of stray capacitance and noise at the amplifi-
er’s inputs and outputs. Decrease stray capacitance by
minimizing PC board trace lengths, using surface-
mount components and placing external components
as close to the device as possible.
UCSP Considerations
For general UCSP information and PC layout considera-
tions, please refer to the Maxim Application Note:
UCSP–A
Wafer-Level Chip-Scale Package.
MAX4366/MAX4367/MAX4368
330mW, Ultra-Small, Audio Power Amplifiers
with Shutdown
______________________________________________________________________________________
13
OUT+
HEADPHONE JACK
OUT-
8
5
C
OUT
MAX4366
MAX4367
MAX4368
Figure 6. MAX4367 Headphone Application Circuit
EARBUD SPEAKER
JACK
INTERNAL
LOUDSPEAKER
COUT
OUT+
OUT-
MAX4366
MAX4367
MAX4368
Figure 7. Headset with Internal Speaker Application Circuit
OUT+
AUDIO
INPUT
OUT-
IN-
3H
W5
4
5
8
C
IN
6L
MAX4367
MAX4368
MAX5160
Figure 8. MAX4367/MAX5160 Volume Control Circuit
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4367EUA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4368EBL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4368EBL+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4368EBL+T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4368EBL-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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