Sanyo LA4537MC Power amplifier for 1.5v headphone stereo Datasheet

Ordering number : ENA2033
Monolithic Linear IC
LA4537MC
Power Amplifier For 1.5V
Headphone Stereos
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
Maximum supply voltage
Allowable power dissipation
Symbol
VCC max
Conditions
Ratings
Quiescent
Pd max
Unit
4.5
V
290
mW
Operating temperature
Topr
−20 to +75
°C
Storage temperature
Tstg
−40 to +125
°C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating voltage range
Recommended load resistance
Symbol
VCC
Conditions
Ratings
Unit
1.5
V
VCC op
0.9 to 4.0
V
RL
16 to 32
Ω
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
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Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer ' s products or
equipment.
32112 SY 20120301-S00005 No.A2033-1/4
LA4537MC
Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit.
Ratings
Parameter
Symbol
Conditions
Unit
min
Quiescent current
typ
max
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
31.5
dB
1.0
dB
1.5
%
Voltage gain
VG
VCC = 1.2V, f = 1kHz, VO = −20dBm
Voltage gain difference
ΔVG
VCC = 1.2V, f = 1kHz, VO = −20dBm
Total harmonic distortion
THD
VCC = 1.2V, f = 1kHz, PO = 0.5mW
Output power
PO
VCC = 1.5V, f = 1kHz, THD = 10%
5
8
mW
Crosstalk
CT
VCC = 1.2V, f = 100Hz, Rg = 1kΩ,
40
45
dB
SVRR
VO = −20dB
VCC = 1.0V, f = 100Hz, Rg = 1kΩ,
40
46
dB
Ripple rejection
28.5
30.0
0.5
VR = −30dBm, BPF = 100Hz
VCC = 2.5V, Rg = 1kΩ, BPF = 20Hz to 20kHz
55
80
μV
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
Muting off current sensitivity
I10 (off)
VCC = 0.85V, V5 ≥ 0.5V
1.0
μA
Muting on voltage sensitivity
V10 (on)
VCC = 0.85V, V5 ≤ 0.1V
Output noise voltage
VNO
Power on current sensitivity
0.5
0.6
0.1
0.5
0.6
V
V
Note) The quiescent current is respresented 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.
Package Dimensions
unit : mm (typ)
3426
5.0
5
0.35
1.75 MAX
0.15
1.5
1.0
0.175
1
0.835
0.37
6.4
6
4.4
10
SANYO : SOIC10
No.A2033-2/4
LA4537MC
Block Diagram
Test Circuit
I1
I10
2
P/SW
3
1
LA4537MC
1
V1
1
1 P/SW
MT/SW 10
MT/SW
4
4
2
2
IN 1
3
PRE GND
4
IN 2
5
REF
Rg
OUT 1
9
POWER
GND
8
OUT 2
7
2
V10
3
+
+
+
SG
VR
RL
1
2
Rg
RL
VCC
+
DC
VCC 6
RIPPLE
A
ICC
Sample Application Circuit 1
(Standard)
LA4537MC
ON
P/SW
OFF
VR
SG
2
MT/SW 10
OFF
MT/SW
ON
VR
SG
1
1 P/SW
2
IN 1
3
PRE GND
4
IN 2
OUT 1
9
POWER
GND
8
OUT 2
7
+
+
RL
+
+
5
REF
RL
+
VCC
VCC 6
No.A2033-3/4
LA4537MC
Sample Application Circuit 2
(Output capacitor shared)
LA4537MC
ON
P/SW
OFF
1 P/SW
MT/SW 10
OFF
MT/SW
ON
RL
VR
VR
SG
1
SG
2
2
IN 1
3
PRE GND
4
IN 2
OUT 1
9
POWER
GND
8
OUT 2
7
+
RL
+
+
5
REF
+
VCC
VCC 6
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This catalog provides information as of March, 2012. Specifications and information herein are subject to
change without notice.
PS No.A2033-4/4
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