UNISONIC TECHNOLOGIES CO., LTD
A4533
LOW POWER AMPLIFIER FOR
HEADPHONE STEREOS
FEATURES
*
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.
LINEAR INTEGRATED CIRCUIT
MSOP-10
SSOP-10
*Pb-free plating product number: A4533L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
A4533-SM2-R
A4533L-SM2-R
A4533-SM2-T
A4533L-SM2-T
A4533-R10-R
A4533L-R10-R
A4533-R10-T
A4533L-R10-T
Package
MSOP-10
MSOP-10
SSOP-10
SSOP-10
Packing
Tape & Reel
Tube
Tape & Reel
Tube
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., LTD
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QW-R121-017,A
A4533
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
POWER SWITCH 1
POWER
SWITCH
Amp1
MUTE
CIRCUIT
10 MUTE SWITCH
IN 1 2
9 OUT 1
PRE GND 3
8 POWER GND
IN 2 4
Amp2
7 OUT 2
REF 5
BIAS
6
V
CC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R121-017,A
A4533
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C)
PARAMETER
LINEAR INTEGRATED CIRCUIT
RATINGS
UNIT
4.5
V
Power Supply Voltage
Power Dissipation
P
D
300
mW
Junction Temperature
T
J
125
℃
Operating Temperature
T
OPR
0 ~ +70
℃
Storage Temperature
T
STG
-40 ~ +150
℃
Note 1. 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.
2. The device is guaranteed to meet performance specification within 0℃ ~ 70
℃
operating temperature range
and assured by design from –20℃ ~ 85℃.
SYMBOL
V
CC
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Operating Voltage Range
Load Resistance
SYMBOL
V
CC
V
OPR
R
L
RATINGS
3
1.6 ~ 4
16 ~ 32
UNIT
V
V
Ω
ELECTRICAL CHARACTERIS
(Ta = 25°C, R
L
=16Ω, R
g
=600Ω, Unless Otherwise specified)
PARAMETER
V
CC
=2.4V
Quiescent Current
V
CC
=4.5V, Mute =GND
V
CC
=4.5V, PS = GND
V
CC
=2.4V, f=1kHz, V
OUT
=–10dBm
30
32
Voltage Gain
V
CC
=1.6V, f=1kHz, V
OUT
=–20dBm
29
32
V
CC
=2.4V, f=1kHz, V
OUT
=–10dBm
Voltage Gain Difference
V
CC
=1.6V, f=1kHz, V
OUT
=–20dBm
Total Harmonic Distortion
V
CC
=2.0V, f=1kHz, P
OUT
=1mW
0.5
Output Power
V
CC
=3.0V, f=1kHz, THD=10%
20
40
V
CC
=2.4V, f=100Hz, Rg=1kW,
40
50
dB
Cross Talk
CT
V
OUT
=–10dB
V
CC
=1.6V, f=100Hz, Rg=1kΩ,
45
60
dB
Ripple Rejection
RR
V
R
=–20dBm, BPF=100Hz
Output Noise Voltage
eN
V
CC
=4.5V, Rg=1kΩ,BPF=20Hz ~ 20kHz
62
100
µV
V
CC
=1.6V, f=100Hz, PS = GND,
-80
dB
Power Off Effect
V
O(OFF)
V
IN
=–10dB
V
CC
=1.6V, f=100Hz, Mute = GND,
-80
dB
Muting Effect
V
O(MT)
V
IN
=–10dB
Power On Current Sensitivity
I
PS(ON)
V
CC
=1.5V, V
REF
≥0.85V
0.05 1.0
µA
Power Off Voltage Sensitivity
V
PS(OFF)
V
CC
=1.5V, V
REF
≤0.1V
0.5
0.6
V
Muting Off Current Sensitivity
I
MUTE(OFF)
V
CC
=1.5V, V
REF
≥0.85V
0.2
1.0
µA
Muting On Voltage Sensitivity
V
MUTE(ON)
V
CC
=1.5V, V
REF
≤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.
SYMBOL
I
Q1
I
Q2
I
Q3
G
V1
G
V2
∆G
V1
∆G
V2
THD
P
OUT
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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 4
QW-R121-017,A
A4533
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
I
1
2
3
1
2
R
g
1k 1
2
R
g
1k
22μ
+
1
P/SW
4
2 IN 1
1 P/SW
UTC A4533
MT/SW 10
OUT 1 9
POWER
GND 8
OUT 2 7
V
CC
6
MT/SW
I10
1
2
3
V10
220μ
+
V
1
4
0.1μ
4.7
4.7
R
L
16
V
R
R
L
16
DC
V
CC
RIPPLE
3 PRE GND
4 IN 2
5 REF
220μ
A
4.7μ
I
CC
+
SG
Unit (resistance:
Ω,
capacitance: F)
TYPICAL APPLICATON CIRCUIT
1
ON
OFF
V
R
2 IN 1
P/SW
1 P/SW
UTC A4533
MT/SW 10
OUT 1 9
POWER
GND 8
OUT 2 7
V
CC
6
4.7μ
+
MT/SW
OFF
ON
0.1μ
4.7
4.7
3 PRE GND
V
R
SG
1
SG
2
4 IN 2
5 REF
22μ
+
220μ
Unit (resistance:
Ω,
capacitance: F)
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
+
0.1μ
+
+
0.1μ
220μ
R
L
16
R
L
16
-
+
V
CC
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QW-R121-017,A