Sanyo LA4537M Power amplifier for 1.5v headphone stereo Datasheet

Ordering number : EN2333C
Monolithic Linear IC
LA4537M
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
300
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 (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). 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 in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
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.
41608 MS JK/21800TN (KT)/63095HA (KOTO)/8307AT, TS No.2333-1/4
LA4537M
Electrical Characteristics at Ta = 25°C, RL = 16Ω, Rg = 600Ω, See specified Test Circuit.
Parameter
Symbol
Ratings
Conditions
min
Quiescent current
typ
Unit
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
%
VG
VCC = 1.2V, f = 1kHz, VO = −20dBm
Voltage gain difference
∆VG
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,
VO = −20dB
40
45
dB
SVRR
VCC = 1.0V, f = 100Hz, Rg = 1kΩ,
40
46
dB
Voltage gain
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
Power on current sensitivity
VNO
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)
3086B
No.2333-2/4
LA4537M
Block Diagram
Test Circuit
No.2333-3/4
LA4537M
Sample Application Circuit 1
(Standard)
Sample Application Circuit 2
(Output capacitor shared)
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change without notice.
PS No.2333-4/4
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