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參數(shù)資料
| 型號： | TC4864EUA |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.74 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 648K |
| 代理商： | TC4864EUA |
TC4864
TC4864-1 12/20/00
2001 Microchip Technology Inc.
DS21571A
300mW Audio Power Amplifier with Shutdown Mode
FEATURES
s
1.0% (Max) THD at 1kHz at 300mW Continuous
Average Output Power into 8
s
1.0% (Max) THD at 1kHz at 300mW Continuous
Average Output Power into 16
s
Shutdown Current 0.1
A (typ)
s
MSOP Packaging
s
No Output Coupling Capacitors, Bootstrap
Capacitors, or Snubber Circuits are Necessary
s
Unity-gain Stable
s
External Gain Configuration Capability
s
300mW Output Power Guaranteed
s
Single Supply Operation
APPLICATIONS
s
Cellular Phones
s
Personal Computers
s
General Purpose Audio
ORDERING INFORMATION
Part
Number
Package
Temp. Range
TC4864EUA
8-Pin MSOP
–40
°C to +85°C
TYPICAL OPERATING CIRCUIT
PIN CONFIGURATION
GENERAL DESCRIPTION
The TC4864 is a bridged audio power amplifier capable
of delivering 300 mW of continuous average power into an
8
load with 1% (THD) from a 5V power supply.
The TC4864 audio power amplifier is specifically de-
signed to provide high quality output power from a low
supply voltage, while requiring very few external compo-
nents.
The TC4864 does not require output coupling, or boot-
strap, capacitors; nor does it require snubber networks.
Because of this, it is ideal for low-power portable applica-
tions.
The TC4864 features an externally controlled, low power
consumption shutdown mode (Active High). The closed loop
response of the unity-gain stable TC4864 can be configured
by external gain-setting resistors. The device is offered in a
space-saving 8-Pin MSOP package to suit applications
where minimal board space layouts are essential. The
TC4864 operates over an input supply voltage range of
2.7V to 5.5V.
8-Pin MSOP
GND
VDD
VREF
VO2
VO1
IN
_
SHDN
IN+
1
2
3
4
5
6
7
8
TC4864
EUA
Audio
Input
VDD
VREF
VDD/2
Vo2
Vo1
VDD
CS
0.1
F
RF
20k
RL
8
50k
50k
10k
10k
CB
1.0
F
Ci
0.39
F
Ri
20k
+
–
+
–
Bias
GND
IN–
IN+
SHDN
Shutdown
Control
7
6
5
8
4
3
2
1
Av = –1
ON
OFF
Figure 1
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