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LA4534M
Ordering number:EN4024A
Monolithic Linear IC
LA4534M
3V CD Headphone-stereo Power Amplifier
The LA4534M is a low noise, low distortion headphone-
stereo power IC designed for use in a portable CD.
Package Dimensions
unit:mm
3086A-MFP10S
Features
• Less current drain.
• Accept 16
[LA4534M]
load drive.
• Excellent voltage reduction characteristic.
• Excellent ripple rejection.
• Power switch function and built-in muting circuit.
• Low noise (7
10
6
m
V), low gain (11dB).
1
5
0.15
5.1
0.35
1.0
0.55
SANYO : MFP10S
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V CC max Quiescent time
4.5
V
Allowable power dissipation
Pd max
300 mW
Operating temperature
Topr
–20 to +75
˚C
Storage temperature
Tstg
–40 to +125
˚C
Operating Conditions at Ta = 25˚C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V CC
3.0
V
Operating supply voltage range
V CC op
1.6 to 4.0
V
Recommended load impedance
R L
16 to 32
½
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098HA (KT)/7162TS No.4024–1/9
W
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LA4534M
Operating Characteristics at Ta = 25˚C, R L =16
W
, Rg=600
W
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Quiescent current
I CCO 1 CC =2.4V, Quiescent time
5.4
10
mA
I CCO 2 CC =4.5V, pin 10 to GND
1.1
2.0
mA
I CCO 3 CC =4.5V, pin 1 to GND
1.0
µ
Voltage gain
VG1
V CC =2.4V, f=1kHz, V O =–10dBm
9
11
13
dB
VG2
V CC =1.6V, f=1kHz, V O =–20dBm
9
11
13
dB
Voltage gain variations
Æ
VG1
V CC =2.4V, f=1kHz, V O =–10dBm
1.0
dB
Æ
VG2
V CC =1.6V, f=1kHz, V O =–20dBm
1.0
dB
Total harmonic distortion
THD
V CC =2.0V, f=1kHz, P O =1mW
0.08
0.24
%
Output power
P O
V CC =3.0V, f=1kHz, THD=10%
25
50
mW
Crosstalk
CT
V CC =2.4V, f=1kHz, Rg=1k ½ ,
V O =–10dBm
40
50
mW
Ripple rejection
SVRR
V CC =1.6V, f=100Hz, Rg=1k
½
,
50
70
dB
V R =–20dBm, BPF=100Hz
Output noise voltage
V NO
V CC =4.5V, Rg=1k ½ ,
BPF=20Hz to 20kHz
7
20
µ V
Power off effect
V O(off)
V CC =1.6V, f=100Hz, Pin 1 to GND,
V IN =–10dBm
–80 dBm
Mute effect
V O(MT)
V CC =1.6V, f=100Hz, Pin 10 to GND,
V IN =–10dBm
–80 dBm
Power on current sensitivity
I1 (on)
V CC =1.5V, V5 ³ 0.85V
0.05
1.0
µ A
Power off voltage sensitivity
V1 (off)
V CC =1.5V, V5
²
0.1V
0.5
0.6
V
Mute off current sensitivity
I10 (off)
V CC =1.5V, V5
³
0.85V
0.2
1.0
A
Mute on voltage sensitivity
V10 (on) V CC =1.5V, V5 ² 0.1V
0.5
0.65
V
Note : Quiescent current is the current flowing into pin 6. The current flowing into pin 1 and pin 10 is at the maximum value and calculated from
the equation (V pin–0.5V)/16[V/k
W
], increasing total current.
Equivalent Circuit Block Diagram
P/SW
1
POWER
SWITCH
MUTE
CIRCUIT
10 MT/SW
IN 1
2
Amp1
9
OUT 1
PRE GND
3
8
POWER GND
IN 2
4
Amp2
7
OUT 2
REF
5
BIAS
6
V CC
A11151
No.4024–2/9
A
µ
11028139.016.png
LA4534M
Test Circuit
I 1
I 10
2
3
1
1
2
3
P/SW
1
P/SW
MT/SW
10
MT/SW
V 10
1
V 1
4
4
220
µ
F
2
9
IN 1
OUT 1
2
0.15
µ
F
+
R L
16
PRE
GND
POWER
GND
4.7
½
½
3
LA4534M
8
Rg
1k ½
V R
4.7
½
R L
16
1
4
7
0.15 µ F
+
½
V CC
IN 2
OUT 2
2
220
µ
F
22 µ F
4.7 µ F
Rg
1k
+
+
SG
DC RIPPLE
½
5
REF
V CC
6
A
A11152
I CC
Sample Application Circuit
ON
P/SW
1
P/SW
MT/SW
10
MT/SW
ON
OFF
OFF
V R
2
9
+
220
µ
F
IN 1
OUT 1
0.15 µ F
R L
16
3
PRE
GND
LA4534M
POWER
GND
8
4.7 ½
½
4.7 ½
R L
16 ½
0.15
µ
F
+
V R
4
7
–
V CC
IN 2
OUT 2
SG
1
SG
2
22
µ
4.7
µ
F
220 µ F
+
+
+
5
6
REF
V CC
A11153
No.4024–3/9
F
11028139.001.png 11028139.002.png 11028139.003.png 11028139.004.png 11028139.005.png 11028139.006.png 11028139.007.png 11028139.008.png
LA4534M
Pin Functions (V CC =3.0V)
Pin No.
Symbol
Pin voltage (V)
Equivalent circuit
Pin function
• The system turns on when the V CC is applied to this
pin and turns off by connecting this pin to GND.
1
P/SW1
1
20k
½
A11155
• Input pin connection.
Input impedance is 10k
.
2
IN1
1.1
500 ½
2
4
4
IN2
1.1
10k
½
A11156
3
PRE GND
• 1.1V fixed bias is applied to this pin.
5
REF
1.1
5
7.8k
½
A11157
6
V CC
3.0
• Output pin connection.
7
OUT2
1.1
9
OUT1
1.1
7
9
4.7k ½
A11158
8
POWER
GND
• The muting function turns on when this pin is
connected to GND and turns off by applying the V CC
to this pin.
10
MT/SW
10
20k
½
A11159
No.4024–4/9
W
11028139.009.png 11028139.010.png 11028139.011.png
LA4534M
10
V O – V IN
10
THD – P O
V CC =3.6V
f=1kHz
R L =16½
V CC =2.4V
R L =16½
3.0V
7
0
5
3
—10
THD=10%
2
—20
1.0
7
—30
5
3
—40
2
—50
0.1
7
—60
5
3
—7 —70
—60
—50
—40
—30
—20
—10
0
10
2
5
7
0.1
23 57
1.0
23 57
10
23 57
Input voltage, V IN – dBm
Output power, P O – mW
2
P O, THD – V CC
2
14
VG – f IN
V CC =2.4V
V O =–10dBm
R L =16½
100
P O
10
7
7
5
5
12
3
3
2
2
10
1.0
10
7
7
5
5
3
3
8
2
2
1.0
THD
0.1
6
+
OUT
7
7
220 µ F
5
5
16
½
3
3
2
0
1
2
3
4
5
6
7
2
4
2
357
100
23 57
1k
23 57
10k
23 57
100k
Supply voltage, V CC – V
Frequency, f IN – Hz
14
VG – V CC
3
2
I CC – P O
f=1kHz
R L =16½
V CC =3.0V
f=1kHz
R L =16½
2 output on
12
100
–10dBm
V O =–20dBm
10
7
5
8
3
2
THD=10%
6
10
4
7
5
2
3
2
0
1
2
3
4
5
6
7
8
2
357
1.0
2357
10
23
57 100
23
Supply voltage, V CC – V
Pd – P O
Output power, P O – mW
1000
100
CT – f IN
f=1kHz
R L =16½
2 output on
V CC =2.4V
R L =16½
Rg=1k
7
4.5V
½
V O =–10dBm
C REF =100µF
5
80
3
22µF
2
3V
60
100
40
7
5
20
3
2
0
2
357 1.0
23 57 10
23
57 100
23
23 57
100
23 57
1k
23 57 10k
23 57 100k
Output power, P O – mW
Frequency, f IN – Hz
No.4024–5/9
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