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PDF A2222 Data sheet ( Hoja de datos )
| Número de pieza | A2222 | |
| Descripción | DUAL 2.2W PLUS STEREO HEADPHONE AUDIO POWER AMPLIFIER | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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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-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A2222
AUDIO POWER AMPLIFIER
DUAL 2.2W PLUS STEREO HEADPHONE FUNCITON
ELECTRICAL CHARACTERISTICS FOR SINGLE-ENDED OPERATION
VDD = 5V Unless otherwise specified. Limits apply for TA = 25°C
Parameter
Symbol
Conditions
THD+N=0.5%, f=1kHz,RL=32Ω
Output Power
PO THD+N=1%, f=1kHz, RL=8Ω
THD+N=10%,f=1kHz, RL=8Ω
Output Offset Voltage
VOS
VIN=0V
Total Harmonic
Distortion + Noise
THD+N
AV=-1, 20Hz≦f≦20kHz,
RL=32Ω,PO=75mW
Power Supply Rejection
Ratio
PSRR
f=1kHz, VRIPPLE = 200MvRMS，
CB=1μF
Channel Separation
XTALK
f=1kHz,CBP=1μF
Signal To Noise Ratio
SNR
VDD=5V, RL=8Ω,PO=340mW
Min. Typ.
75 85
340
440
5 50
0.2
52
60
95
Max.
Unit
mW
mV
%
dB
dB
dB
REV2.0
- MAR 2011 RELEASED, JUL 2012 UPDATED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
A2222
AUDIO POWER AMPLIFIER
DUAL 2.2W PLUS STEREO HEADPHONE FUNCITON
31. Power Supply Rejection Ratio
32. Open Loop Frequency Response
33. Supply Current vs. Supply Voltage
REV2.0
- MAR 2011 RELEASED, JUL 2012 UPDATED -
- 11 -
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet A2222.PDF ] | |
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