Preamplifier + Power Amplifier
for 1.5 V Headphone Stereos
Overview
The LA4587M is a system IC that includes all of the necessary
functions for a playback set on a single chip, reducing the
number of external components needed.
Functions
.
Stereo preamplifier (supports auto reverse function,
switchable between metal and normal tape)
.
Stereo power amplifier (OCL, mute function)
.
Ripple filter
.
Low boost function (BTL operation in low-frequency range)
.
AMSS (Automatic Music Select System)
.
Power switch
Features
.
Preamplifier has a high open-loop gain (VGO = 73 dB).
.
Preamplifier requires no NF capacitor.
.
Virtual ground capacitor can be 1 F or less. (Lower
impedance is achieved by having a VREF amplifier built in.)
.
Ripple filter requires no capacitor for preventing oscillation.
.
Powerful output is obtained in low boost output
(Po = 21 mW/VCC = 1.2 V, f = 100 Hz).
.
A high-frequency cutoff capacitor is built into the
preamplifier and power amplifier inputs; anti-buzz provision.
Package Dimensions
unit : mm
3102-QIP48D
[LA4587M]
14.0
16.5
1.5
1.25
2.5max
0.15
1.0
0.35
2.15
0.1
15.0
0.75
1
12
13
24
25
36
37
48
14.0
16.5
1.5
1.25
1.0
0.35
SANYO : QIP48D
Allowable
power
dissipation,
Pd
max
–
m
W
Ambient temperature, Ta – °C
Ordering number: EN5204A
Monolithic Linear IC
LA4587M
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 Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
13097HA(II)/N3095HA(II) No.5204-1/18