SANYO LA4525 Datasheet
Ordering number: EN4022C
Monolithic Linear IC
LA4525
Dual AF Power Amplifier
for Radio Cassette Recorders
Overview
The LA4525 requires only a small number of external
components to drive either two 4 Ω speakers or one 8 Ω
speaker. The output power is typically 0.65 W when driving
two 4 Ω speakers.
Package Dimensions
unit : mm
3001B-DIP8
[LA4525]
Features
.
Two-channel (dual) or single-channel (BTL) operation
.
Requires only a few external components.
.
0.65 W (typ) output power into two 4 Ω speakers
.
Wide power supply range: 3 to 15 V
.
8-pin DIP (No heat sink needed)
SANYO : DIP8
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Allowable power dissipation Pd max Note 1.5 W
Operating temperature Topr –25 to +75 °C
Storage temperature Tstg –40 to +150 °C
max Rg = 0 15 V
CC
Note: Mounted on a 50 × 50 × 1.6 mm3heat dissipating board
Recommended Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage V
Load resistance range R
Supply voltage range V
CC
L
op Not in excess of package Pd 3 to 15 V
CC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
32896HA(II)/D0192TS/4162TS No.4022-1/8
6V
4 Ω
LA4525
Operating Characteristics at VCC= 6 V, Ta =25°C, RL=4Ω,f=1kHz, Rg = 600 Ω,
Dual operation unless otherwise noted
Parameter Symbol Condition min typ max Unit
Quiescent supply current I
Output power
CCO
P
O
P
O
Voltage gain VG V
Total harmonic distortion THD P
Output noise voltage V
NO
Supply voltage ripple rejection SVRR Rg = 0 Ω,f
Channel separation CH Sep V
Input resistance Ri 70 100 130 kΩ
Equivalent Block Diagram
Rg=0Ω 10 15 30 mA
1 THD = 10% 0.45 0.65 W
2VCC=9V,RL=8Ω, THD = 10% 1.0 W
= 0 dBm 38 40 42 dB
O
= 0.1 W 0.2 0.7 %
O
Rg=0Ω, DIN AUDIO filter 100 400 µV
= 100 Hz, VR= 0 dBm 35 43 dB
R
= 0 dBm, Rg=0Ω 45 55 dB
O
IN2
BTL IN
Ch2
input
amp.
Predriver
amp.
PRE GND
IN1
Ch1
input
amp.
Predriver
amp.
Pin Description
Number Name Description
1 OUT1 Channel 1 output
2V
CC
3 OUT2 Channel 2 output
4 POWER GND Power amplifier ground
5 BTL IN Bridge test load input
6 IN2 Channel 2 input
7 IN1 Channel 1 input
8 PRE GND Preamplifier ground
Supply voltage
Output
amp.
Output
amp.
OUT2
POWER GND
OUT1
No.4022-2/8
Dual Operation
Mounted on Sanyo
recommended board
Independent IC
Allowable power dissipation, Pd max − W
LA4525
Ambient temperature, Ta − °C
Sample Printed Circuit Pattern
Unit (capacitance:F)
Unit (capacitance:F)
65 × 65mm
2
(Cu-foiled area)
No.4022-3/8
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