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参数资料
| 型号： | MAX4409ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .08W STER AB 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | DirectDrive® |
| 类型： | AB 类 |
| 输出类型： | 耳机，2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 80mW x 2 @ 16 欧姆 |
| 电源电压： | 1.8 V ~ 3.6 V |
| 特点： | 消除爆音，短路保护和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 20-TQFN-EP（4x4） |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
MAX4409
Application Circuit). Place capacitors C2 and C3 as
close to the device as possible. Route PGND and all
traces that carry switching transients away from SGND
and the traces and components in the audio signal
path.
Ensure that the COM traces have the same trace length
and width as the amplifier input and feedback traces.
Route COM traces away from noisy signal paths. The
thin QFN package features an exposed paddle that
improves thermal efficiency of the package. However,
the MAX4409 does not require additional heatsinking.
Ensure that the exposed paddle is isolated from GND
or VDD. Do not connect the exposed paddle to GND
or VDD.
80mW, DirectDrive, Stereo Headphone
Amplifier with Common-Mode Sense
14
______________________________________________________________________________________
VNOISE
0.1
Ω
0.1
Ω
0.1
Ω
0.1
Ω
VREF_IN = (VNOISE x 0.99)
VIN = VAUDIO + (VNOISE x 0.98)
RESISTOR IS
INSERTED
BETWEEN THE
JACK SLEEVE
AND
GND = 9.8
Ω
VAUDIO
GND NOISE COMPONENT IN
OUTPUT = VNOISE/100
EXAMPLE CONNECTION:
IMPROVEMENT FROM
ADDING MAX4409 WITH
SERIES RESISTANCE
9.8
Ω RESISTOR ADDS TO HP CROSSTALK, BUT DIFFERENTIAL
SENSING AT THE JACK SLEEVE CORRECTS FOR THIS (ONE CHANNEL
ONLY SHOWN).
CURRENT FLOW (IN SIGNAL CABLE SCREEN) DUE TO VNOISE
IS GREATLY REDUCED.
NOISE COMPONENT IN THE RECEIVER OUTPUT IS REDUCED BY 34dB
OVER THE PREVIOUS EXAMPLE WITH THE VALUES SHOWN.
9.8
Ω
0.10
Ω RESISTANCE FROM CABLE SCREEN
0.10
Ω RESISTANCE DUE TO GND CABLING AT RECEIVER
VNOISE REPRESENTS THE POTENTIAL DIFFERENCE BETWEEN
THE TWO GNDS
VREF_IN = VNOISE/2
VIN = VAUDIO
GND NOISE COMPONENT IN
OUTPUT = VNOISE/2
MAX4409
Figure 6. Common-Mode Noise Rejection
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4409EUD | 制造商:Maxim Integrated Products 功能描述:80MW, DIRECTDRIVE, STEREO HEADPHONE AMPLIFIER - Bulk |
| MAX4409EUD+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.08W CLS-AB 14TSSOP - Rail/Tube |
| MAX4409EUD+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.08W CLS-AB 14TSSOP - Tape and Reel |
| MAX440C/D | 功能描述:多路器开关 IC RoHS:否 制造商:Maxim Integrated 通道数量: 开关数量: 开启电阻（最大值）: 开启时间（最大值）:40 ns 关闭时间（最大值）:10 ns 传播延迟时间: 工作电源电压:+/- 5 V 工作电源电流:40 mA 最大工作温度:+ 70 C 安装风格: 封装 / 箱体: |
| MAX440C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
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