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A2222 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 A2222
기능 DUAL 2.2W PLUS STEREO HEADPHONE AUDIO POWER AMPLIFIER
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A2222 데이터시트, 핀배열, 회로
AiT Semiconductor Inc.
www.ait-ic.com
A2222
AUDIO POWER AMPLIFIER
DUAL 2.2W PLUS STEREO HEADPHONE FUNCITON
DESCRIPTION
The A2222 is a dual bridge-connected audio power
amplifier which, when connected to a 5V supply,
will deliver 2.2W to a 4Ω load or 2.5W to a 3Ω load
with less than 1.0% THD+N. In addition, the
headphone input pin allows the amplifiers to
operate in single-ended mode to drive stereo
headphones.
Boomer audio power amplifiers were designed
specifically to provide high quality output power
from a surface mount package while requiring few
external components. To simplify audio system
design, the A2222 combines dual bridge speaker
amplifiers and stereo headphone amplifiers on one
chip.
The A2222 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.
The A2222 is available in SOP16 package.
ORDERING INFORMATION
FEATURES
Stereo headphone amplifier mode
“Click and pop” suppression circuitry
Unity-gain stable
Thermal shutdown protection circuitry
Power Output @1% THD+N & VDD=5V
RL=8Ω 1.1W(TYP.)
Single-ended mode THD+N@75mW into 32Ω
0.5%(Max)
Shutdown current 0.7uA(TYP.)
Supply Voltage 2.0V~5.5V
Available in SOP16 package.
APPLICATION
Multimedia monitors
Portable and desktop computers
Portable televisions
Package Type
Part Number
SOP16
M16
A2222M16R
A2222M16VR
Note
R: Tape & Reel
V: Halogen free Package
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV2.0
- MAR 2011 RELEASED, JUL 2012 UPDATED -
-1-




A2222 pdf, 반도체, 판매, 대치품
AiT Semiconductor Inc.
www.ait-ic.com
A2222
AUDIO POWER AMPLIFIER
DUAL 2.2W PLUS STEREO HEADPHONE FUNCITON
ELECTRICAL CHARACTERISTICS
VDD = 5V Unless otherwise specified. Limits apply for TA = 25°C
Parameter
Symbol
Conditions
Supply Voltage
VDD
Quiescent Power Supply Current
VIN = 0V,IO=0A ,HP-IN = 0V,
IDD
VIN = 0V,IO=0A ,HP-IN = 5V,
Shutdown Current
ISD VSHUTDOWN = 5V
Headphone Voltage Input High
VIH
Headphone Voltage Input Low
VIL
Min. Typ.
2.0
6 11.5
5.8
0.7
4
Max.
5.5
20
Unit
V
mA
2 uA
V
0.8 V
ELECTRICAL CHARACTERISTICS FOR BRIDGED-MODE OPERATION
VDD = 5V Unless otherwise specified. Limits apply for TA = 25°C
Parameter
Symbol
Conditions
Output Offset Voltage
VOS VIN = 0V
THD+N=1%, f=1kHz,RL=8Ω
Output Power
PO THD+N=10%, f=1kHz, RL=8Ω
THD+N=1%,f=1kHz, RL=32Ω
Total Harmonic
Distortion + Noise
THD+N
AVD=2, 20Hz f 20kHz,
RL=8Ω,PO=1W
Power Supply Rejection
Ratio
PSRR
VDD=5V , VRIPPLE = 200mVP-P
CBP=1μF, RL=
Channel Separation
XTALK
f=1kHz,CBP=1μF
Signal To Noise Ratio
SNR
VDD=5V, RL=8Ω,PO=1.1mW
Min. Typ.
5
1.0 1.1
1.5
0.34
0.3
67
90
98
Max.
50
Unit
mV
W
%
dB
dB
dB
REV2.0
- MAR 2011 RELEASED, JUL 2012 UPDATED -
-4-

4페이지










A2222 전자부품, 판매, 대치품
AiT Semiconductor Inc.
www.ait-ic.com
A2222
AUDIO POWER AMPLIFIER
DUAL 2.2W PLUS STEREO HEADPHONE FUNCITON
7. THD+N vs. Frequency
8. THD+N vs. Frequency
9. THD+N vs. Frequency
10. THD+N vs. Output Power
11. THD+N vs. Output Power
12. THD+N vs. Output Power
REV2.0
- MAR 2011 RELEASED, JUL 2012 UPDATED -
-7-

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