UNISONIC TECHNOLOGIES CO., LTD A4533

UNISONIC TECHNOLOGIES CO., LTD
A4533
LINEAR INTEGRATED CIRCUIT
LOW POWER AMPLIFIER FOR
HEADPHONE STEREOS

FEATURES
MSOP-10
* Low current consumption.
* 16Ω load drive capability.
* Excellent reduced voltage characteristics.
* High power supply ripple rejection.
* Fewer external components required.
* High voltage gain.
* Less harmonic interference in radio band.
* Built in power switch and muting function.

ORDERING INFORMATION
Order Number
A4533G-SM2-R
A4533G-SM2-T
A4533G-R10-R
A4533G-R10-T

SSOP-10
Package
MSOP-10
MSOP-10
SSOP-10
SSOP-10
Packing
Tape Reel
Tube
Tape Reel
Tube
MARKING
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., LTD
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QW-R107-044.C
A4533

LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
POWER SWITCH 1
POWER
SWITCH
MUTE
CIRCUIT
Amp1
IN 1 2
IN 2 4
Amp2
BIAS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
9 OUT 1
8 POWER GND
PRE GND 3
REF 5
10 MUTE SWITCH
7 OUT 2
6 VCC
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A4533

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless Otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Power Supply Voltage
VCC
4.5
V
Power Dissipation
PD
300
mW
Junction Temperature
TJ
125
°C
Operating Temperature
TOPR
-20 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

RECOMMENDED OPERATING CONDITIONS
PARAMETER
Recommended Supply Voltage
Operating Voltage Range
Load Resistance

SYMBOL
VCC
VOPR
RL
RATINGS
3
1.6 ~ 4
16 ~ 32
UNIT
V
V
Ω
ELECTRICAL CHARACTERIS (TA = 25°C, RL=16Ω, Rg=600Ω, unless Otherwise specified)
PARAMETER
SYMBOL
IQ1
IQ2
IQ3
GV1
GV2
∆GV1
∆GV2
THD
POUT
CONDITIONS
MIN
TYP
5.4
1.1
MAX UNIT
10
mA
2.0
mA
1.0
μA
34
dB
34
dB
1.0
dB
1.0
dB
1.5
%
mW
VCC=2.4V
VCC=4.5V, Mute =GND
VCC=4.5V, PS = GND
VCC=2.4V, f=1kHz, VOUT=–10dBm
30
32
Voltage Gain
VCC=1.6V, f=1kHz, VOUT=–20dBm
29
32
VCC=2.4V, f=1kHz, VOUT=–10dBm
Voltage Gain Difference
VCC=1.6V, f=1kHz, VOUT=–20dBm
Total Harmonic Distortion
VCC=2.0V, f=1kHz, POUT=1mW
0.5
Output Power
VCC=3.0V, f=1kHz, THD=10%
20
40
VCC=2.4V, f=100Hz, Rg=1kW,
40
50
dB
Cross Talk
CT
VOUT=–10dB
VCC=1.6V, f=100Hz, Rg=1kΩ,
45
60
dB
Ripple Rejection
RR
VR=–20dBm, BPF=100Hz
Output Noise Voltage
eN
VCC=4.5V, Rg=1kΩ,BPF=20Hz ~ 20kHz
62
100
μV
VCC=1.6V, f=100Hz, PS = GND,
-80
dB
Power Off Effect
VO(OFF)
VIN=–10dB
VCC=1.6V, f=100Hz, Mute = GND,
-80
dB
Muting Effect
VO(MT)
VIN=–10dB
Power On Current Sensitivity
IPS(ON)
VCC=1.5V, VREF≥0.85V
0.05 1.0
μA
Power Off Voltage Sensitivity
VPS(OFF) VCC=1.5V, VREF ≤0.1V
0.5
0.6
V
Muting Off Current Sensitivity
IMUTE(OFF) VCC=1.5V, VREF ≥0.85V
0.2
1.0
μA
Muting On Voltage Sensitivity
VMUTE(ON) VCC=1.5V, VREF ≤0.1V
0.5 0.65
V
Note: The quiescent current is represented by the current flowing into pin 6. The respective maximum currents
flowing into pin 1 and pin 10 are calculated by (pin voltage –0.5) / 16 [V/kΩ] and the total current increases by
these current values.
Quiescent Current
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A4533
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
2
PS
3
V1
1
1
1 PS
MUTE 10
MUTE
4
4
2 IN 1
2
Rg
1kΩ
1
SG
I10
UTC A4533
1
OUT 1 9
3 PRE GND
2
Rg
1kΩ
4 IN 2
OUT 2 7
5 REF
VCC 6
3
V10
220μF
0.1μF
RL
16Ω
4.7Ω
4.7Ω
0.1μF
RL
16Ω VCC
VR
220μF
DC
A
+
+
22μF
POWER
GND 8
2
+
I1
+

4.7μF
RIPPLE
ICC
TYPICAL APPLICATON CIRCUIT
UTC A4533
1
PS
1 PS
MUTE 10
OFF
MUTE
OFF
ON
2 IN 1
VR
3 PRE GND
VR
SG
1
SG
2
OUT 1 9
POWER
GND 8
4 IN 2
OUT 2 7
5 REF
VCC 6
4.7Ω
4.7Ω
0.1μF
220μ
RL
16Ω
RL
16Ω
+
VCC
4.7μF
+
+
22μF
0.1μF
220μF
+
ON
+

UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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