A2230 - AiT Semiconductor Inc
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
DESCRIPTION
FEATURES
The A2230 is a Class-AB audio power amplifier. It is

Improved PSRR at 217 Hz & 1 KHz 60dB
capable of delivering 1.7 watts of continuous average

Power output at 5.0V, 10% THD+N, 4Ω
power to an 4Ω BTL load with less than 10%
distortion (THD+N) from a 5VDC power supply, or 1.1
1.7 W (typ.)

watts continuous average power to an 8Ω BTL load
Power output at 5.0V, 1% THD+N, 8Ω
1.1 W (typ.)
with less than 1% distortion.

2.2V ~ 5.5V operation
The A2230 is designed specifically to provide high

Improved circuitry eliminates pop-click noise
quality output power with a minimal amount of
external components. It does not require output
during turn-on and turn-off transitions

coupling capacitors or bootstrap capacitors. The
No output coupling capacitors, snubber
networks or bootstrap capacitors required
A2230 is ideally suited for audio speakers and other

Unity-gain stable
low voltage applications.

External gain configuration capability
With special pop-click eliminating circuit, the A2230

Available in SOP8 package.
provides
perfect
pop-click
characteristic
during
turn-on and turn-off transitions.
The A2230 is unity-gain stable and can be configured
by external gain-setting resistors.
The A2230 is available in SOP8 package.
ORDERING INFORMATION
Package Type
SOP8
Note
APPLICATION

Audio speakers

Desktop computers

Low voltage audio systems
TYPICAL APPLICATION
Part Number
M8
A2230M8R
A2230M8VR
V: Halogen free Package
R: Tape & Reel
SPQ: 2.5K/Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-1-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
PIN DESCIPTION
TOP VIEW
Pin #
Symbol
I/O
Functions
1
SHD
I
2
BP
I/O
3
INP
I
Positive Input
4
INN
I
Negative Input
5
VOUT1
O
Negative BTL Output
6
VDD
I/O
Power Supply (2.2~5.5 V)
7
GND
I/O
Ground
8
VOUT2
O
Positive BTL Output
Shut-down Logical Control, ‘1’ is active.
Analog ground for inner OPAs. It’s about a half of VDD.
EXTERNAL COMPONENTS DESCRIPTION
Components
Ri
Ci
Rf
REV2.0
Functional Description
Inverting input resistance which sets the closed-loop gain in conjunction with Rf. This resistor
also forms a high pass filter with Ci at fc = 1/(2πRi*Ci).
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminates. Also
creates a high-pass filter with Ri at fc = 1/(2πRi*Ci).
Feedback resistance which sets the closed-loop gain in conjunction with Ri. The gain is
AVD=2*(Rf/Ri).
Cs
Supply bypass capacitor which provides power supply filtering.
Cb
Bypass pin capacitor which provides half-supply filtering. Refer to the section.
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-2-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
-0.3V~6.0V
Input Voltage
-0.3V~VDD+0.3V
Power dissipation
See Dissipation Rating Table
Junction Temperature
-40℃~+150℃
Storage Temperature
-65℃~+150℃
Thermal Resistance
θJA(SOP8)
184℃/W
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device..These are stress ratings only and operations
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
OPERATING RATINGS
Parameter
Value
Temperature Range
−40°C ≤ TA ≤ 85°C
Supply Voltage
2.2V ≤ VDD ≤ 5.5V
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-3-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
ELECTRICAL CHARACTERISTICS
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified.
Limits apply for TA = 25℃.
VDD = 5V
Parameter
Symbol
Quiescent Power Supply Current
IDD
Shutdown Current
ISD
Conditions
Min.
Typ.
Max.
Unit
VIN = 0V, 8Ω Load
-
3.0
8.0
VIN = 0V, No Load
-
2.5
7.0
VIN=0V, VSHD=GND, No Load
-
0.5
-
μA
mA
Shutdown Voltage Input High
VSDIH
1.2
-
-
V
Shutdown Voltage Input Low
VSDIL
-
-
0.9
V
Output Offset Voltage
VOS
-50
6.0
50
mV
Po=0.5Wrms, f=1KHz
-
0.07
-
%
THD+N<=1%, f=1KHz, 8Ω Load
-
1.1
-
THD+N<=10%, f=1KHz, 4Ω Load
-
1.7
-
-
60
-
dB
-
61
-
dB
-
100
-
ms
Min.
Typ.
Max.
Unit
VIN = 0V, 8Ω Load
-
2.0
7.0
VIN = 0V, No Load
-
1.5
6.0
VIN=0V, VSHD=GND, No Load
-
0.5
-
μA
Total Harmonic Distortion + Noise
Output Power
THD+N
PO
Input terminated with 10Ω,
Power Supply Rejection Ratio
PSRR
VDDRIPPLE=0.2VP-P, f=217Hz
Input terminated with 10Ω,
VDDRIPPLE=0.2VP-P, f=1KHz
Wake-up time
TWU
W
VDD = 3V
Parameter
Symbol
Quiescent Power Supply Current
IDD
Shutdown Current
ISD
Conditions
mA
Shutdown Voltage Input High
VSDIH
1.0
-
-
V
Shutdown Voltage Input Low
VSDIL
-
-
0.7
V
Output Offset Voltage
VOS
-50
6.0
50
mV
Po=0.25Wrms, f=1KHz
-
0.08
-
%
THD+N<=1%, f=1KHz, 8Ω Load
-
310
-
mW
-
57
-
dB
-
58
-
dB
-
75
-
ms
Total Harmonic Distortion + Noise
Output Power
THD+N
PO
Input terminated with 10Ω,
Power Supply Rejection Ratio
PSRR
VDDRIPPLE=0.2VP-P, f=217Hz
Input terminated with 10Ω,
VDDRIPPLE=0.2VP-P, f=1KHz
Wake-up time
REV2.0
TWU
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-4-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
TYPICAL APPLICATION CIRCUIT
Figure 1. A2230 Typical Application Circuit
Figure 2. A2230 Differential Amplifier Configuration
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-5-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
TYPICAL PERFORMANCE CHARACTERISTICS
1.
THDN vs. Frequency
2.
VDD=5V RL=8Ω PO=500mW
3.
THDN vs. Output Power
VDD=5V RL=8Ω F=1KHz
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
THDN vs. Frequency
VDD=3V RL=8Ω PO=250mW
4.
THDN vs. Output Power
VDD=3V RL=8Ω F=1KHz
-6-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
5.
THDN vs. Output Power
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
6.
VDD=5V RL=4Ω F=1KHz
7.
PSRR vs. Frequency
VDD=3V RL=8Ω
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
PSRR vs. Frequency
VDD=5V RL=8Ω
8.
Noise Floor 20KBW
VDD=5V RL=8Ω
-7-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
PACKAGE INFORMATION
Dimension in SOP8 (Unit: mm)
Symbol
Min
Max
A
-
1.77
A1
0.08
0.28
A2
1.20
1.60
A3
0.55
0.75
b
0.39
0.48
b1
0.38
0.43
c
0.21
0.26
c1
0.19
0.21
D
4.70
5.10
E
5.80
6.20
E1
3.70
4.10
e
L
1.270(BSC)
0.50
L1
θ
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
0.80
1.050(BSC)
0°
8°
-8-
A2230
AiT Semiconductor Inc.
www.ait-ic.com
AUDIO AMPLIFIER
1.7 WATT AUDIO POWER AMPLIFIER
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any
integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant
information to verify, before placing orders, that the information being relied on is current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to be
suitable for use in life support applications, devices or systems or other critical applications.
such applications is understood to be fully at the risk of the customer.
death, personal injury, or servere property, or environmental damage.
Use of AiT products in
As used herein may involve potential risks of
In order to minimize risks associated with
the customer's applications, the customer should provide adequate design and operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support.
AiT warrants the
performance of its products of the specifications applicable at the time of sale.
REV2.0
- DEC 2010 RELEASED, DEC 2015 UPDATED -
-9-
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