12313NKPC CAV 20120301-S00005/32112SY No.A2033-1/8
http://onsemi.com
Semiconductor Components Industries, LLC, 2013
May , 2013
LA4537MC
Features
• Low current drain
• 16Ω load drive capability
• Excellent reduced voltage characteristics
• Excellent power supply ripple rejection
• Minimum number of external parts required (no input capacitor, feedback capacitor required)
• Less harmonic interference in radio band
• On-chip power switch function, muting function
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage VCC max Quiescent 4.5 V
Allowable power dissipation Pd max 290 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 VCC 1.5 V
Operating voltage range VCC op 0.9 to 4.0 V
Recommended load resistance RL 16 to 32 Ω
Orderin
g
numbe
r
: ENA2033A
Monolithic Linear IC
Power Amplifier
for 1.5V Headphone Stereos
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Cond itions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
LA4537MC
No.A2033-2/8
Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit.
Parameter Symbol Conditions Ratings Unit
min typ max
Quiescent current ICCO1 VCC = 1.2V, quiescent 3.5 6.0 mA
ICCO2 VCC = 2.5V, pin 10 → GND 1.4 2.5 mA
ICCO3 VCC = 2.5V, pin 1 → GND 1.0 μA
Voltage gain VG VCC = 1.2V, f = 1kHz, VO = −20dBm 28.5 30.0 31.5 dB
Voltage gain difference ΔVG VCC = 1.2V, f = 1kHz, VO = −20dBm 1.0 dB
Total harmonic distortion THD VCC = 1.2V, f = 1kHz, PO = 0.5mW 0.5 1.5 %
Output power PO V
CC = 1.5V, f = 1kHz, THD = 10% 5 8 mW
Crosstalk CT VCC = 1.2V, f = 100Hz, Rg = 1kΩ,
VO = −20dB 40 45 dB
Ripple rejection SVRR VCC = 1.0V, f = 100Hz, Rg = 1kΩ,
VR = −30dBm, BPF = 100Hz 40 46 dB
Output noise voltage VNO V
CC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz 55 80 μV
Power on current sensitivity I1 (on) VCC = 0.85V, V5 ≥ 0.5V 0.1 1.0 μA
Power off voltage sensitivity V1 (off) VCC = 0.85V, V5 ≤ 0.1V 0.5 0.6 V
Muting off current sensitivity I10 (off) VCC = 0.85V, V5 ≥ 0.5V 0.1 1.0 μA
Muting on voltage sensitivity V10 (on) VCC = 0.85V, V5 ≤ 0.1V 0.5 0.6 V
Note) The quiescent curre nt is resprese nted by the current flow ing into pin 6. Th e respectiv e maximum currents flow ing 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.
Package Dimensions
unit : mm (typ)
3426
SANYO : SOIC10
5.0
4.4
6.4
610
51
0.835
0.15
0.37
0.35
1.0
0.175 1.5 1.75 MAX
LA4537MC
No.A2033-3/8
Block Diagram
Test Circuit
V10
I10
V1
I1
A
6
1
2
2
2
2
3
4
SG
P/SW P/SW MT/SW
MT/SW
GND
POWER
OUT 2
OUT 1
IN 1
IN 2
PRE GND
LA4537MC
REF
1
1
1
3
4
5
7
8
12
3
DC RIPPLE
4
9
10
VCC
ICC
VCC
Rg
RL
VR
RL
Rg
+
+
+
+
Sample Application Circuit 1
(Standard)
6
1
2
OFF
ON
SG SG
P/SW P/SW MT/SW
MT/SW
GND
POWER
OUT 2
OUT 1
IN 1
IN 2
PRE GND
LA4537MC
REF
3
4
5
7
8
ON
OFF
9
10
VCC
VR
VR
VCC
RL
RL
+
+
+
+
+
12
LA4537MC
No.A2033-4/8
Sample Application Circuit 2
(Output capacitor shared)
6
1
2
OFF
ON
SG SG
P/SW P/SW MT/SW
MT/SW
GND
POWER
OUT 2
OUT 1
IN 1
IN 2
PRE GND
LA4537MC
REF
3
4
5
7
8
ON
OFF
9
10
VCC
VR
VR
VCC
RL
RL
+
+
+
+
12
LA4537MC
No.A2033-5/8
THD --
P
O
0.1
2
3
1
5
7
2
3
10
5
7
2
3
5
7
2
4
6
8
10
2
4
6
100
0.1
2
3
5
7
1
2
3
5
7
2
3
5
7
10
100
0.1 23 57 23 57 23 5723 57
1
1 1.5 2 2.5 3 3.5 1 1.5 2 2.5 3 3.5
2357 23 57 2357 23 57
0.1 1 10
23 10
57 2 3 57 2 3 57 2 3 57
1
1 1.5 2 2.5 3 3.5
10
10 10
Output power, PO-- mW
THD --
P
O
Total harmonic distortion, THD -- %
0.1
Supply voltage, VCC -- V
PO-- VCC
Output power,
P
O--
m
W
0
12
0.5 4
Supply voltage, VCC -- V
PO-- VCC
Output power, PO-- mW
0
8
0.5 4
Output power, PO-- mW
Total harmonic distortion, THD -- %
2
3
5
7
2
3
5
7
1
0.4
0.6
0.8
1
Frequency, fin -- kHz
THD -- fin
Total harmonic distortion, THD -- %
0.1
10
0.01 100 Supply voltage, VCC -- V
THD -- VCC
Total harmonic distortion, THD -- %
0.2
1.2
0.5 4
50
100
150
20
40
60
80
Output power, PO-- mW/ch
Pd -- PO
Power dissipation, Pd --
m
W
0
200
1100
Output power, PO-- mW / ch
ICCOP -- PO
Supply current, ICCOP -- mA
0
100
1 100
VCC=0.9V
VCC=1.2V
VCC=3V
VCC=1.5V
fin=100Hz
fin=10kHz
fin=1kHz
fin=100Hz
THD=10%
THD=1%
THD=10%
THD=1%
fin=10kHz
fin=1kHz
VCC=1.2V
RL=16Ω
PO=0.5mW
RL=16Ω
fin=1kHz
RL=16Ω
RL=16Ω
fin=1kHz
RL=32Ω
fin=1kHz
VCC=1.2V
RL=32Ω
PO=0.5mW
fin=1kHz
RL=16Ω
VCC=3V
fin=1kHz
RL=16Ω
LA4537MC
No.A2033-6/8
Vg -- fin
20
25
30
35
55
60
65
50
60
70
80
90
40
25
27.5
30
32.5
35
0.01 23 57 23 57 1 1.5 2 2.5 3.5
123 57 23 57
100.1
1 1.5 2 2.5 3 3.5 1
23 57 10
2 3 57 2 3 57
2357 23 57 23 57 2357
0.1 1 10
23 10
57 2 3 57 2 3 57 2 3 57
3
1 1.5 2 2.5 3 3.5
10
100 4
Supply voltage, VCC -- V
Vg -- VCC
Voltage gain, Vg -- dB
0.5
Supply voltage, VCC -- V
Vno -- VCC
Output noise voltage, Vno --
µ
Vrms
50
70
0.5 4
Signal source resistance, Rg -- kΩ
Vno -- Rg
Output noise voltage, Vno -- µVrms
40
100
0.1 100
Frequency, fin -- kHz
Voltage gain, Vg -- dB
40
50
40
45
50
Frequency, fin -- kHz
CT -- fin
Crosstalk, CT -- dB
30
60
0.01 100
Supply voltage, VCC -- V
CT -- VCC
Crosstalk, CT -- dB
35
55
0.5 4
30
40
50
60
2
3
5
7
2
3
5
7
100
Capacitance, Cref -- µF
CT -- Cref
Crosstalk, CT -- d
B
20
70
1100
Capacitance, Cref -- µF
AMP On-time -- Cref
On-time -- msec
10
1000
1100
VCC=1.2V
VO=-20dBm
RL=16Ω
Cout=220µF
VO=-20dBm
fin=1kHz
RL=16Ω
Cout=220µF
VCC=1.2V
VO=-20dBm
Rg=1kΩ
RL=16Ω
VCC=1.2V
VO=-20dBm
f=100Hz
Rg=1kΩ
RL=16Ω
VCC=1.2V
RL=16Ω
VO=-20dBm
fin=100Hz
Rg=1kΩ
RL=16Ω
Rg=1kΩ
RL=16Ω
VCC=2.5V
RL=16Ω
LA4537MC
No.A2033-7/8
SVR
R
-- Cref
30
40
50
60
35
40
45
50
55
--100
--95
--90
70
35
40
45
50
55
60
65
123 57 23 57 2357
10
1 1.5 2 2.5 3 3.5 0.1
23 57 1
23 57 10
23 57 23 57
1 1.5 2 2.5 3 3.5
1 1.5 2 2.5 3 3.5
0.1 23 57123 57 23 57
10
11.50.5 2 2.5 3 43.5
100 100
Frequency, f -- kHz
SVR
R
-- f
SVRR -- dB
0.01
Supply voltage, VCC -- V
SVRR -- VCC
SVRR -- dB
30
60
0.5 4
Frequency, fin -- kHz
VMT -- fin
Mutting level, VMT -- dBm
--105
--85
0.01 100
Capacitance, Cref -- µF
SVRR -- dB
-- 100
--95
--90
1
2
3
4
5
6
7
8
Supply voltage, VCC -- V
VMT -- VCC
Mutting level, VMT -- dB
m
-- 105
--85
0.5 4
Supply voltage, VCC -- V
ICCO -- VCC
Quiescent current drain, ICCO -- m A
0
9
04.5
0.2
0.4
0.6
0.8
Supply voltage, VCC -- V
Pin voltage -- VCC
Pin voltage -- V
0
1
0.5 4
VCC=1.0V
VR=-30dBm
f=100Hz
Rg=1kΩ
RL=16Ω
VCC=1.0V
VR=-30dBm
Rg=1kΩ
RL=16Ω
VR=-30dBm
f=100Hz
Rg=1kΩ
RL=16Ω
Vin=-10dBm
fin=100Hz
RL=16Ω
V1=0.85V
V10=0.3V
V1=0.85V
V10=0.85V
REF (5pin)
OUT (7pin, 9pin)
V1=0.85V
no load
no signal
VCC=0.9V
Vin=-10dBm
RL=16Ω
V1=0.85V
V10=0.3V
Same characteristics
during power-off mode
Same characteristics
during power-off mode
Mute off
Mute on
LA4537MC
PS No.A2033-8/8
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