SANYO LA3335M Datasheet

Ordering number: EN2619B

Monolithic Linear IC

LA3335M

PLL FM Multiplex Demodulator

for 3 V Headphone Stereos and

Radio-cassette Recorders

Overview

The LA3335M is PLL FM stereo multiplex demodulator IC
designed for use in headphone stereos, etc. which operate from
a low supply voltage.

Applications

.

FM Multiplex IC for 3 V headphones, radio-cassette
recorders

Functions

.

PLL FM stereo decoder, VCO stop, stereo indicator

Features

.

Wide operating voltage range : 1.8 to 6 V

.

Low current dissipation : 1.6 mA

.

Minimum number of external parts required

Package Dimensions

unit : mm

3086A-MFP10S

[LA3335M]

SANYO : MFP10S

Specifications

Maximum Ratings atTa=25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Lamp drive current I
Allowable power dissipation Pd max Ta % 70 °C 50 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +125 °C

max 8 V

CC

max 10 mA

L

Operating Conditions atTa=25°C

Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Operating voltage range V
Input signal voltage V

CC

op 1.8 to 6 V

CC

IN

3V

150 mV

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

O3096HA(II)/40594HK/O307TA,TS No.2619-1/6

LA3335M

Operating Characteristics at Ta = 25 °C, VCC= 3 V, input 150 mV, L + R = 90%, pilot = 10%,

f = 1 kHz, See specified Test Circuit.

Parameter Symbol Conditions min typ max Unit
Quiescent current I
Input resistance Ri 35 50 65 kΩ
Output resistance Ro 5.3 7.5 9.7 kΩ
Channel separation CHsep 30 45 dB

Total harmonic distortion THD
Output voltage V

Channel balance CB Monaural 0 1.5 dB
Lamp lighting level V
Lamp hysteresis hy 3.5 dB
Capture range CR Pilot 15 mV ±3%
Allowable input level V
Signal to noise ratio S/N Monaural 82 dB

CCO

O

L

max Monaural, THD = 5% 350 mV

IN

Equivalent Circuit Block Diagram and Test Circuit

No input 1.6 2.5 mA

Monaural 0.6 1.5 %
Stereo main 0.3 1.5 %
Monaural 90 130 180 mV

Pilot 1.5 3.5 6 mV

Decoder

Sync

detection

Lamp

trigger

Stereo
Switch

Phase

comparison

S1: VCO STOP when ON
AMP: Bandwidth of 100 kHz or more, THD = 0.01% or less, input impedance of 330 kΩ or more
* Styrol capacitor

No.2619-2/6