LA4592W Datasheet, PDF (1/5 Pages) Sanyo Semicon Device – 1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products

Ordering number : EN5662
Monolithic Linear IC
LA4592W
1.5-V Preamplifier + Power Amplifier
for Headphone Stereo Products
Overview
The LA4592W is a single-chip 1.5-V headphone stereo
system IC. The LA4592W adds a variety of functions,
including a switch amplifier (for end product audio quality
switches, the metal tape switch, and other switches) and an
AMSS (Automatic Music Search System) function that
supports blank skipping, to the earlier LA4590W.
Furthermore, the LA4592W provides even lower no-signal
time power levels for lower end-product power
dissipation. In combination with the LA3235W 1.5-V
record preamplifier IC, the LA4592W can be used to
implement a record/playback cassette system with just two
ICs.
Functions
• Stereo preamplifier: supports auto reverse and includes a
muting function.
• Stereo power amplifier: Includes OCL and muting
functions.
• Ripple filter
• Low boost function (BTL operation in the low-
frequency region)
• Inter-track detection function (Supports AMSS and
blank skipping)
• Two switching amplifiers
• Power switch (standby function)
Features
• Virtual ground impedance is reduced by built-in V_REF
amplifier
• No capacitor required for ripple filter oscillation
prevention.
• Provides ample output power at low frequencies.
(P_O = 24 mW, V_CC = 1.2 V, f = 150 Hz)
• High-frequency cutoff capacitors built into the
preamplifier and power amplifier inputs to minimize
buzzing.
Package Dimensions
unit: mm
3163A-SQFP48
[LA4592W]
Ambient temperature, Ta – °C
Specifications
Maximum Ratings at Ta = 25°C
SANYO: SQFP48
Parameter
Symbol
Maximum supply voltage
Allowable power dissipation
V_CC max
Pd max
Operating temperature
Topr
Storage temperature
Tstg
Allowable Operating Ranges at Ta = 25°C
Conditions
Ratings
Unit
3.0
V
320
mW
–10 to +60
°C
–40 to +125
°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
V_CC
V_CCop
Conditions
Ratings
Unit
1.5
V
0.95 to 2.2
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
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