ΘJA of a TDFN package is 41°C/W. The incre" />
參數(shù)資料
型號(hào): MAX4368ETA+T
廠商: Maxim Integrated Products
文件頁數(shù): 3/16頁
文件大?。?/td> 0K
描述: IC AMP AUDIO PWR .33W MONO 8TDFN
標(biāo)準(zhǔn)包裝: 2,500
類型: AB 類
輸出類型: 1-通道(單聲道)
在某負(fù)載時(shí)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(diǎn): 消除爆音,關(guān)機(jī),熱保護(hù)
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 8-TDFN-EP(3x3)
封裝/外殼: 8-WDFN 裸露焊盤
包裝: 帶卷 (TR)
Maximum Ratings section. For example,
ΘJA of a TDFN
package is 41°C/W.
The increase in power delivered by the BTL configura-
tion directly results in an increase in internal power dis-
sipation over the single-ended configuration. If the
power dissipation exceeds the maximum allowed for a
given package, either reduce VCC, increase load
impedance, decrease the ambient temperature, or add
heat sinking to the device. Large output, supply, and
ground traces improve the maximum power dissipation
in the package.
Thermal overload protection limits total power dissipa-
tion in the MAX4366/MAX4367/MAX4368. When the
junction temperature exceeds +165°C, the thermal pro-
tection circuitry disables the amplifier output stage. The
amplifiers are re-enabled once the junction temperature
cools by +10°C. This results in a pulsing output under
continuous thermal overload conditions avoiding dam-
age to the part.
Component Selection
Gain-Setting Resistors
External feedback components set the gain of the
MAX4366. Resistors RF and RIN (Figure 3) set the gain
of the input amplifier as follows:
The gain of the device in a single-ended configuration
is half the gain of the BTL case. Choose RF between
10k
Ω and 50kΩ. The gains of the MAX4367/MAX4368
are set internally (Figure 4).
Input Filter
The input capacitor (CIN), in conjunction with RIN forms
a highpass filter that removes the DC bias from an
incoming signal. The AC-coupling capacitor allows the
amplifier to bias the signal to an optimum DC level.
Assuming zero source impedance, the -3dB point of
the highpass filter is given by:
f
RC
dB
IN IN
-3
1
2
=
π
A
R
VD
F
IN
=
2
MAX4366/MAX4367/MAX4368
330mW, Ultra-Small, Audio Power Amplifiers
with Shutdown
______________________________________________________________________________________
11
Figure 4. MAX4367/MAX4368 Typical Application Circuit
VCC
CIN
RIN
RF
CBIAS
6
OUT-
IN+
BIAS
AUDIO
INPUT
3
2
CLICKLESS/
POPLESS
SHUTDOWN
CONTROL
GND
SHDN
8
OUT+
5
7
1
MAX4367
MAX4368
50k
Ω
50k
Ω
10k
Ω
10k
Ω
IN-
4
MAX4367: RIN = RF = 20k
Ω
MAX4368: RIN = 20k
Ω,RF = 30kΩ
PIN NUMBERS REFER TO TDFN PACKAGE.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4368EUA 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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MAX436C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX436CPD 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比(最小值):63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel