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PDF LM4880 Data sheet ( Hoja de datos )
| Número de pieza | LM4880 | |
| Descripción | DUAL 250m W AUDIO POWER AMPLIFIER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
LM4880
DUAL 250mW AUDIO POWER
AMPLIFIER WITH SHUTDOWN
MODE
DESCRIPTION
The UTC LM4880 is a dual audio power amplifier capable of
delivering typically 250mW per channel of continuous average power
to an 8Ω load with 0.1% THD+N using a 5V power supply.
The UTC LM4880 features an externally controlled, low-power
consumption shutdown mode, as well as an internal thermal
shutdown protection mechanism.
The unity-gain stable UTC LM4880 can be configured by external
gain-setting resistors.
FEATURES
* No bootstrap capacitors or snubber circuits are necessary
* Unity-gain stable
* External gain configuration capability
APPLICATIONS
* Personal Computers
* CD-ROM Players
* Headphone Amplifier
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LM4880L-D08-T
LM4880G-D08-T
- LM4880G-SH2-R
Package
DIP-8
HSOP-8
CMOS IC
Packing
Tube
Tape Reel
MARKING
DIP-8
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd.
HSOP-8
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LM4880
AUTOMATIC SHUTDOWN CIRCUIT
CMOS IC
VDD
AUDIO
20kΩ
0.1µF
INPUT
+
0.33µF
20kΩ
+
1µF
2 - UTC 8 1
3
LM4880
+
5
4 RSD
100kΩ
VDD
100µF
+
RO
1kΩ
1RMP Ω
HEADPHONE JACK
Fig. 2 Automatic Shutdown Circuit
TO CHANNEL B
OUTPUT(PIN 7)
VIA COUPLING
CAPACITOR
AUTOMATIC SWITCHING CIRCUIT
VDD
AUDIO
20kΩ
0.1µF
INPUT + 20kΩ
0.33µF
2 - UTC 8 1
3
LM4880
+
5
VDD
+
1µF
4
RSD
100kΩ
100μF
+
RP 1RkΩO
1MΩ
+ 20kΩ
0.33µF
+
1µF
20kΩ
VDD
0.1μF
6
4- 5
3
PA4871
+
2
7
1
8
RL
8Ω
HEADPHONE JACK
TO UTC LM4880
CHANNEL B OUTPUT
(PIN 7) VIA COUPLING
CAPACITOR
Fig. 3 Automatic Switching Circuit
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM4880
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| PDF Descargar | [ Datasheet LM4880.PDF ] | |
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