0.6 to 0.9 W AF Power Amplifier

for Radio Cassette Recorders

Features

.

The LA4145 is especially suited for use in cassette tape

recorder, radio-cassette, recorder, stereo cassette player

applications.

.

.

Minimum number of external parts required

.

Soft clip

.

.

Voltage gain fixed at 50 dB.

An external resistor can be connected to reduce this value.

Package Dimensions

unit : mm

3017C-SIP9

[LA4145]

SANYO : SIP9

Specifications

Maximum Ratings at Ta = 25°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

Quiescent mode

9

V

8V

Maximum output current

500

mA

Allowable power dissipation

Pd max

50

0.9

W

Operating temperature

Topr

–20 to +70

°C

Storage temperature

Tstg

–40 to +150

°C

Operating Conditions at Ta = 25°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

6V

Recommended load resistance

4to8

Ω

Operating voltage range

3.6 to 8

V

Parameter

Symbol

Conditions

min

typ

max

Unit

Quiescent current

LA4145

10

20

mA

Voltage gain

VG

48

50

52

dB

Output power

0.9

W

0.45

0.6

W

Total harmonic distortion

THD

0.2

1.0

%

Input resistance

30

k

Ω

Output noise voltage

Rg=10k

Ω, B.P.F. = 20 Hz to 20 kHz

0.6

1.2

mV

Ripple rejection ratio

SVRR

–35

–40

dB

Ordering number: EN1339D

Monolithic Linear IC

LA4145

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

53096HA(II)/O217KI/N055MW/4034/N163KI,TS No.1339-1/5