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PDF LM4863 Data sheet ( Hoja de datos )
| Número de pieza | LM4863 | |
| Descripción | DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
LM4863
DUAL 2.2W AUDIO AMPLIFIER
PLUS STEREO HEADPHONE
FUNCTION
CMOS IC
DESCRIPTION
The UTC LM4863 is a dual bridge-connected audio power
amplifier. It combines dual bridge speaker amplifiers and stereo
headphone amplifiers on one chip to simplify audio system design.
In addition, the headphone input pin allows the amplifiers to
operate in single-ended mode when driving stereo headphones.
The IC could deliver different power by packages as below (when
connected to a 5V supply with less than 1.0% THD+N.):
- HTSSOP-20, 4Ω load: 2.2W
- HTSSOP-20, 3Ω load: 2.5W(with forced-air cooled)
- SOP/DIP , 8Ω load: 1.1W.
The UTC LM4863 features an externally controlled, low-power
consumption shutdown mode, a stereo headphone amplifier mode,
and thermal shutdown protection. It also utilizes circuitry to reduce
“clicks and pops” during device turn-on.
FEATURES
* “Click and pop” suppression circuitry
* Thermal shutdown protection circuitry
* Unity-gain stable
* Stereo headphone amplifier mode
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
LM4863L-D16-T
LM4863G-D16-T
- LM4863G-S18-R
- LM4863G-N20-R
Package
DIP-16
SOP-18
HTSSOP-20
Packing
Tube
Tape Reel
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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LM4863
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIM TYP MAX UNIT
FOR SINGLE-ENDED OPERATION
Output Offset Voltage
VO(OFF) VIN=0V
5 50 mV
THD=0.5%, f=1kHz, RL=32Ω
75 85
Output Power
POUT THD+N=1%, f=1kHz, RL=8Ω
340 mW
THD+N=10%, f=1kHz, RL=8Ω
440
Total Harmonic Distortion + Noise
THD+N
AV=-1, POUT=75mW,20Hz≤f≤20kHz,
RL=32Ω
0.2 %
Power Supply Rejection Ratio
PSRR CB=1.0μF, VRIPPLE=200mVRMS, f=1kHz
52 dB
Channel Separation
XTALK f=1kHz, CB=1.0μF
60 dB
Signal To Noise Ratio
SNR VDD=5V, POUT=340mW, RL=8Ω
95
Note:1. All voltages are measured with respect to the ground (GND) pins, unless otherwise specified.
dB
2. Depends on the offset voltage when a practical load is connected to the amplifier.
3. When driving 3Ω or 4Ω and operating on a 5V supply, the HTSSOP-20 package must be mounted to the
circuit board that has a minimum of 2.5 in2 of exposed, uninterrupted copper area connected to the
exposed-DAP.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM4863
TYPICAL CHARACTERISTICS(Cont.)
CMOS IC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LM4863.PDF ] | |
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