SANYO LA7285M, LA7285 Datasheet

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

VCR Audio Signal Recording

and Playback Processor

Ordering number:EN4091

LA7285, 7285M

Monolithic Linear IC

Overview

The LA7285 and LA7285M include on chip all functions
required for the record and playback of VCR audio
signals. In addition, the inclusion of a switching circuit
for switching between tuner and line input in addition to
the circuits provided by earlier ICs makes the LA7285

truly optimal for audio VCR products.

Funtions

• Equalizer amplifier

• Line amplifier

• Recording/playback switch

• Recording amplifier

• Mute

• SP, LP, EP switch

• Ripple filter

• ALC

• Tape head switch

• Line/tuner input switch

Features

• Built-in input switching circuit (for the line and tuner
inputs).

• Smaller package leaves large space for other
components.

• Equalizer input/output capacitors not required.

• Low gain variation eliminates the need for external
ajustment.

• Supply voltage : 9V and 12V operation.

Package Dimensions

unit:mm

3067-DIP24S

[LA7285]

unit:mm

3112-MFP24S

[LA7285M]

SANYO:DIP24S

Specifications

Maximum Ratings at Ta = 25˚C

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppusmumixaMV

egatlovtupni1niPV

tnerructupni1niPV

noitapissidrewopelbawollAxamdP 004Wm

erutarepmetgnitarepOrpoT 56+ot01–

erurtarepmetegarotSgtsT 051+ot55–

xam 41V

CC

1CD 56+p-pV

NI

1 5.1±Am

NI

Ta≤65˚C

Operating Conditions at Ta=25˚C

retemaraPlobmySsnoitidnoCsgnitaRtinU

egatlovylppusdednemmoceRV

egnaregatlovylppusgnitarepOV

CC

po 57.21ot5.8V

CC

53098HA (KT) No.4091-1/7

SANYO:MFP24S

˚C
˚C

21V

LA7285, 7285M

Operating Characteristics at Ta=25˚C, VCC=12V, f=1kHz, 0dBV : 1.0 Vrms

retemaraPlobmySsnoitidnoC

)EE(noitpmusnoctnerruCI
)BP(noitpmusnoctnerruCI

)CER(noitpmusnoctnerruCI

]reifilpmarezilauqE[

niagegatlovtiucric-nepOGV

egatlovesiontupnitnelaviuqEV

]reifilpmaeniL[

)tupniBP(niagegatloVGV

)tupniENIL,EE(niagegatloV

noitrotsidcinomrahlatoTDHT

egatlovesiontuptuOV

egatlovtuptuomumixaMV

nosiCLAnehwegatlovtuptuOV

tceffeCLACLAV

nosiCLAnehwnoitrotsiDDHT

]reifilpmagnidroceR[
)nepo(niagegatloVGV
)esloc(niagegatloVGV

noitrotsidcinomrahlatoTDHT
egatlovtuptuomumixaMV

]tiucricetuM[
egatlovnOV
egatlovffOV

)EE,BP(noitaunettaetuMM

)CER(noitaunettaetuMM

]tiucrichctiwsPS,PL,PE[

egatlovdlohedomPEV

egatlovdlohedomPLV

egatlovdlohedomPSV

]tiucrichctiwsBPrenuT/eniL[

egatlovdlohedomeniLV

egatlovdlohedomrenuTV

egatlovdlohedomBPV

]tiucrichctiwsEE,CER[

egatlovdlohedomCERV

egatlovdlohedomEEV

]hctiwStceleSdaeH[
ecnatsiserno1niPR
ecnatsiserno2niPR

egatlovtupni2niPV

ECC
PCC

RCC

EO

EIN

PL

GV

,EL

GV

LL

LVO
LON
LMO

AO

A

RO
RO

RVO

RMO

NOM

FFOM

PM,E

R

EE
LE
SE

LL
TL
PL

RR
ER

1Am1±=1I0203

NO

2Am1±=2I501

NO

1 54±V

NI

langisoN5.90.315.61Am
langisoN5.90.315.61Am
langisoN0.80.110.41Am

V

V
V

V

V

V
V

VBd7–=0.660.17Bd

O

k2.2=gR Ω retlifoiduANID,2.18.1smrVµ

VBd7–=0.125.120.22Bd

O

VBd7–=0.125.120.22Bd

O

VBd7–=50.03.0%
k2.2=gR Ω retlifoiduANID,27–66–VBd
%1=DHT5.11.2smrV

VBd72–=0.8–0.7–0.6–VBd

NI
NI

VBd72–=50.06.0%

NI

VBd7–=0.740.25Bd

O

VBd7–=5.210.315.31Bd

O

VBd7–=1.03.0%
%1=DHT5.10.2smrV

VBd7–otVBd72–=0.10.3Bd

egatlovCD32niP5.20.6V
egatlovCD32niP05.1V

egatlovCD12niP6.30.6V
egatlovCD12niP8.16.2V
egatlovCD12niP00.1V

egatlovCD22niP6.30.6V
egatlovCD22niP8.16.2V
egatlovCD22niP00.1V

egatlovCD42niP3V
egatlovCD42niP00.1V

Ta=65˚C, f=80kHz (sin), ILK=10µA

sgnitaR

nimpytxam

0809Bd
5657Bd

CC

tinU

V

Ω
Ω

No.4091-2/7

Block Diagram

Test Circuit

LA7285, 7285M

Unit (resistance:Ω, capacitance:F)

No.4091-3/7