參數(shù)資料
型號： MAX4366ETA+T
廠商： Maxim Integrated Products
文件頁數(shù)： 16/16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)
MAX4366/MAX4367/MAX4368
330mW, Ultra-Small, Audio Power Amplifiers
with Shutdown
_______________________________________________________________________________________
9
Pin Description
PIN/BUMP
TDFN
UCSP
NAME
FUNCTION
1
C3
SHDN
Active-High Shutdown. Connect SHDN to GND for normal operation.
2
C1
BIAS
DC Bias Bypass. See BIAS Capacitor section for capacitor selection. Connect CBIAS
capacitor from BIAS to GND.
3
A3
IN+
Noninverting Input
4
A1
IN-
Inverting Input
5
A2
OUT+
Bridged Amplifier Positive Output
6B3
VCC
Power Supply
7
B1
GND
Ground
8
C2
OUT-
Bridged Amplifier Negative Output
EP
—
EP
Exposed Paddle. Connect exposed pad to GND.
Detailed Description
The MAX4366/MAX4367/MAX4368 bridged audio
power amplifiers can deliver 330mW into a 32
Ω load, or
200mW into a 16
Ω load, while operating from a single
5V supply. These devices consist of two high-output-
current op amps configured as a bridge-tied load (BTL)
amplifier (see
Functional Diagram). The closed-loop
gain of the input op amp sets the single-ended gain of
the device. Two external resistors set the gain of the
MAX4366 (see
Gain-Setting Resistors section). The
MAX4367/MAX4368 feature internally fixed gains of
2V/V and 3V/V, respectively. The output of the first
amplifier serves as the input to the second amplifier,
which is configured as an inverting unity-gain follower
in all three devices. This results in two outputs, identical
in magnitude, but 180° out of phase.
BIAS
The MAX4366/MAX4367/MAX4368 feature an internally
generated common-mode bias voltage of VCC/2 refer-
enced to GND. BIAS provides both click-and-pop sup-
pression and the DC bias level for the audio signal.
BIAS is internally connected to the noninverting input of
one amplifier, and should be connected to the nonin-
verting input of the other amplifier for proper signal
biasing (
Typical Application Circuit). Choose the value
of the bypass capacitor as described in the
BIAS
Capacitor section.
Shutdown
The MAX4366/MAX4367/MAX4368 feature a 35A, low-
power shutdown mode that reduces quiescent current
consumption and extends battery life. Pulling SHDN
high disables the device’s bias circuitry and drives
OUT+, OUT-, and BIAS to GND. Connect SHDN to
GND for normal operation.
Applications Information
Bridge-Tied Load
The MAX4366/MAX4367/MAX4368 are designed to
drive a load differentially, a configuration referred to as
bridge-tied load (BTL). The BTL configuration (Figure 1)
offers advantages over the single-ended configuration,
where one side of the load is connected to ground.
Driving the load differentially doubles the output volt-
age compared to a single-ended amplifier under similar
conditions. The differential gain of the device is twice
the closed-loop gain of the input amplifier. The effective
gain of the MAX4366 is given by:
A
R
VD
F
IN
=×
2
+1
R
L
OUT+
2 x OUT
OUT-
-1
Figure 1. Bridge-Tied Load Configuration
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相關代理商/技術參數(shù)
參數(shù)描述
MAX4366EUA 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX4366EUA+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX4366EVKIT 制造商:Maxim Integrated Products 功能描述:
MAX4367EBL 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX4367EBL-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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