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L-4863 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 L-4863
기능 Dual 2.2W Audio Amplifier Plus Stereo Headphone Function
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L-4863 데이터시트, 핀배열, 회로
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UNISONIC TECHNOLOGIES CO., LTD
L4863
DUAL 2.2W AUDIO AMPLIFIER
PLUS STEREO HEADPHONE
FUNCTION
SOP-16
CMOS IC
SOP-18
DESCRIPTION
The UTC L4863 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, 4load: 2.2W
- HTSSOP-20, 3load: 2.5W(with forced-air cooled)
- SOP/DIP , 8load: 1.1W.
The UTC L4863 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
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* “Click and pop” suppression
* Thermal shutdown protection
* Unity-gain stable
* Stereo headphone amplifier mode
DIP-16
HTSSOP -20
*Pb-free plating product number: L4863L
DataShee
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
Package
L4863-D16-T
L4863L-D16-T
DIP-16
L4863-S16-R
L4863L-S16-R
SOP-16
L4863-S16-T
L4863L-S16-T
SOP-16
L4863-S18-R
L4863L-S18-R
SOP-18
L4863-S18-T
L4863L-S18-T
SOP-18
L4863-N20-R L4863L-N20-R HTSSOP-20
L4863-N20-T
L4863L-N20-T HTSSOP-20
Packing
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
LM4863L-D16-T
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) D16: DIP-16, S16: SOP-16, S18: SOP-18,
N 20: HTSSOP-20
(3) L: Lead Free Plating, Blank: Pb/Sn
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Copyright © 2005 Unisonic Technologies Co., Ltd
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L-4863 pdf, 반도체, 판매, 대치품
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L4863
CMOS IC
TYPICAL APPLICATION CIRCUIT
Audio
Input
CI RF
1µF 20KΩ 6
RI 8
20KΩ
VDD
+
CS
0.1µF
4,13
TANT
- IN A
+IN A
+-AMP 1A
20KΩ
50KΩ
CB 10 Bypass VDD/2
Audio
Input
CI
1µF
(CB size)
0.33µF
RI
20KΩ
VDD
RF
11 -IN B
9 +IN B
50KΩ
+-AMP210KBΩ
20KΩ
100kΩ
To Control Pin on
Headphone jack 100KΩ
1
16
Shutdown
HP-IN
CO
-OUT A 5
20KΩ
100µF
+ CONTROL PIN
RL 1kΩ
RING
+-AMP202AK+OΩUT A
3
8Ω
To HP-IN Circuit
CO
-OUT B 12
100µF
+
TIP SLEEVE
HEADPHONE JACK
20KΩ
20KΩ
+-AMP
2B
+OUT
B
14
RL
8Ω
1kΩ
GND 2,7,15
Note: Pin out shown for DIP-16 and SOP-16 packages. Refer to the PIN CONFIGURATION for the pin out of other
packages.
Figure 1.Typical Audio Amplifier Application Circuit
EXTERNAL COMPONENTS DESCRIPTION
Components
RI
CI
RF
CS
CB
Functional Description
The inverting input resistance, DalaontagSwhiteheRt4FU, s.ectotmhe closed-loop gain. RI, along with CI form a high
pass filter with fc=1/(2πRICI)
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. CI, along with RI,
create a high pass filter with fc=1/(2πRICI). Refer to the section. Selecting Proper External
Components, for an explanation of determine the value of CI.
The feedback resistance, along with RI, set the closed-Ioop gain.
The supply bypass capacitor. Refer to the Power Supply Bypassing section for information about
properly placing and selecting the value of, this capacitor.
The capacitor, CB, filters the half-supply voltage present on the Bypass pin. Refer to the Selecting
Proper External Components section for information concerning proper placement and selecting
CB’S value.
DataShee
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www.unisonic.com.tw
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L4863
TYPICAL CHARACTERISTICS(Cont.)
THD+N vs Output Power
10
VDD=-3.3V, AVD= -2
RL=4Ω
f=20kHz
1
f=20Hz
0.1
f=1kHz
CMOS IC
THD+N vs Frequency
10
VDD=3.3V, AVD=-2
POUT=750mW, RL=4Ω
1
0.1
0.01
10m
0.1
Level (W)
12
0.01
20
100 1k
Frequency (Hz)
10k 20k
THD+N vs Output Power
10
VDD=-3.3V, AVD=-2
RL=8Ω
1 f=20kHz
THD+N vs Frequency
10
VDD=3.3V, AVD=-2
POUT=450mW, RL=8Ω
1
et4U.com
f=20Hz
0.1
f=1kHz
0.01
10m
0.1
Level (W)
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0.1
1
0.01
20 100 1k 10k 20k
Frequency (Hz)
1000
800
Output Power vs Load Resistance
VDD=3.3V, AV= -1
f=1kHz, BW<80kHz
600
400 THD+N=10%
200
0
0
THD+N=1%
10 20 30
Load Resistance()
40
Power Dissipation vs Supply Voltage
800
VDD=3.3V
Single-ended
600
4
400
8
200
16
0
0 250 500 750 1000
Power Out (mW)
DataShee
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부품번호상세설명 및 기능제조사
L-4863

Dual 2.2W Audio Amplifier Plus Stereo Headphone Function

Unisonic Technologies
Unisonic Technologies

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