LA4581 데이터 시트보기 (PDF) - SANYO -> Panasonic
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LA4581 Datasheet PDF : 8 Pages
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Ordering number: EN3535A
Monolithic Linear IC
LA4581MB
Preamplifier + Power Amplifier
for 3V Headphone Stereos
Overview
The LA4581MB is an auto reverse-supported preamplifier +
power amplifier IC that is intended for use in 3V headphone
stereos.
Features
. Preamplifier muting and preamplifier output on/off can be
implemented with one pin. This IC can easily be used to
. construct a set with a radio.
The power amplifier needs no input/output coupling
. capacitor.
A high-frequency cut capacitor is connected to the
preamplifier input pin and the power amplifier input pin.
. (Anti-buzz provision)
Because Vref AMP (r0 = 10 Ω) is built in, the virtual
grounding impedance is about 10 Ω. This eliminates the
. need for a large capacitor.
8 Ω speaker drivable.
Package Dimensions
unit : mm
3112-MFP24S
[LA4581MB]
SANYO : MFP24S
Specifications
Maximum Ratings at Ta = 25 °C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Operating Conditions at Ta = 25 °C
Conditions
Ratings
Unit
4.5
V
530
mW
–20 to +75
°C
–40 to +125
°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
VCC
VCC op
Conditions
Ratings
Unit
3.0
V
1.8 to 3.6
V
Operating Characteristics at Ta = 25 °C, VCC = 3.0 V, f = 1 kHz, 0.775 V = 0 dBm,
RL = 10 kΩ (preamplifier), RL = 16 Ω (power amplifier)
Parameter
[Pre + Power]
Quiescent current
Voltage gain (Closed)
Symbol
Output
ICCO
VGT
Rg = 2.2 kΩ (preamplifer) VIN = 0 V
VO = –5 dBm
min typ max Unit
17 27 mA
65 68 71 dB
Continued on next page.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
22896HA(II) No.3535-1/8
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