參數(shù)資料
型號(hào)： MAX4409ETP+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 6/20頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO .08W STER AB 20TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
系列： DirectDrive®
類(lèi)型： AB 類(lèi)
輸出類(lèi)型： 耳機(jī)，2-通道（立體聲）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 80mW x 2 @ 16 歐姆
電源電壓： 1.8 V ~ 3.6 V
特點(diǎn)： 消除爆音，短路保護(hù)和熱保護(hù)，關(guān)閉
安裝類(lèi)型： 表面貼裝
供應(yīng)商設(shè)備封裝： 20-TQFN-EP（4x4）
封裝/外殼： 20-WFQFN 裸露焊盤(pán)
包裝： 帶卷 (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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4409EUD 制造商:Maxim Integrated Products 功能描述:80MW, DIRECTDRIVE, STEREO HEADPHONE AMPLIFIER - Bulk
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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:多路器開(kāi)關(guān) IC RoHS:否 制造商:Maxim Integrated 通道數(shù)量: 開(kāi)關(guān)數(shù)量: 開(kāi)啟電阻（最大值）: 開(kāi)啟時(shí)間（最大值）:40 ns 關(guān)閉時(shí)間（最大值）:10 ns 傳播延遲時(shí)間: 工作電源電壓:+/- 5 V 工作電源電流:40 mA 最大工作溫度:+ 70 C 安裝風(fēng)格: 封裝 / 箱體:
MAX440C/D DIE 制造商:Maxim Integrated Products 功能描述:
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