Sanyo LA7411M Specifications

Ordering number: EN 5108

Monolithic Linear IC

LA7411,7411M

Playback Amplifier and Record Amplifier

for VHS VCRs

Overview

The LA7411 and LA7411M are playback and record amplifier IC for two-head VHS VCRs. When used in conjunction with the video signal processing ICs of the LA7420/30 series, it is possible to eliminate the need to adjust the Y/C record current.

Functions

2-channel playback amplifier.

1-channel record amplifier.

REC/PB mode switching head switch circuit.

Envelope wave detection (for auto-tracking).

Features

The record amplifier provides stable record characteristics in constant current drive mode, which is able to withstand load fluctuations. In addition, the built-in AGC eliminates the need to adjust the record current.

Designed to share printed circuit boards with the LA7416/7416M (for 4-head systems).

Package Dimensions

unit : mm

3067-DIP24S

21.2

0.48

[LA7411]

0.95

[LA7411M]

0.81 1.78

3112-MFP24S

6.4

7.62

3.25

3.9max

3.3

0.51min

SANYO : DIP24S

5.4

6.35

0.25

7.6

112

12.6

0.35

1.0

0.8

1.5

0.1

1.8max

0.15

SANYO : MFP24S

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

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

61295HA(II) No.5108-1/5

0.625

LA7411,7411M

Specifications

Maximum Ratings atTa=25°C

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

Allowable power dissipation Pd max Ta %65°C

Operating temperature Topr –10 to +65 Storage temperature Tstg –40 to +150

*: LA7411M Pd max value which represents the value when mounted on the board.

Operating Conditions atTa=25°C

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

Electrical Characteristics atTa=25°C

Parameter Symbol Input Output Conditions T1 T2 min typ max Unit

[PB Mode] T12: 5.0 V

Current consumption I

Voltage gain L CH1 G Voltage gain H CH2 G Voltage gain difference ∆G Equivalent input

noise voltage

CH1 V CH2 V

Frequency characteristics CH1 ∆Vfp1 T17A T7A VI= 38 mVp-p,

CH2 ∆Vfp2 T20A T7A 2.5 –2.5 +1 dB

Secondary

CH1 V

harmonic distortion

CH2 V

Maximum output level CH1 V

CH2 V

Cross-talk

CH1 V

(Note 1)

CH2 V

Output DC offset ∆V

Envelope wave detection output pin voltage

Envelope wave detection voltage SP1

Envelope wave detection voltage SP2

Envelope wave detection voltage EP1

CCP

NIN NIN

HDP

OMP

ENVSP

ENVEP

VP1 VP2

VP1

ODC

ENV

1 2

max 7.0 V

op 4.8 to 5.5 V

EP/SP SW30

T10: Open

MUTE

T4: Open (PB) Pin 12

0 141822mA

input current T17A T7A VI= 38 mVp-p T20A T7A 2.5 56.5 59.5 62.5 dB

f=1MHz

— G

VP1

VP2

T17A T7A After 1.1 MHz T20A T7A 2.5 1.1 1.5

LPF

OUT/GVP1,2

0 56.5 59.5 62.5 dB

–1 0 +1 dB

0 1.1 1.5

0 –2.5 +1 dB f=7MHz V

OUT/GVP1,2

output ratio

T17A T7A VI= 38 mVp-p,

0 –40 –35 dB f=4MHz

T20A T7A 2.5 –40 –35 dB

8 M component 4 M component

output ratio

T17A T7A f=1MHz

0 1.0 1.2 Vp-p Output level when

T20A T7A 2.5 1.0 1.2 Vp-p

tertiary distortion of the output is –30 dB

T20A T7A VI= 38 mVp-p,

0 –40 –35 dB f=4MHz

T17A T7A 2.5 –40 –35 dB

OUT/GVP1,2

output ratio

T7 CH1–CH2 0 –100 0 +100 mV

2.5

T5 T5 DC voltage

0 0 0 0.8 1.5 V

with no input

T17A T5 f = 4 MHz,

0 0 2.0 2.5 3.0 V T7A: Adjusted to 175 mVp-p

T17A T5 f = 4 MHz,

0 0 4.5 4.8 5.0 V T7A: Adjusted to 450 mVp-p

T17A T5 f = 4 MHz,

5.0 0 2.0 2.5 3.0 V T7A: Adjusted to 125 mVp-p

700 mW

*500 mW

° °

5.0 V

C C

µVrms µVrms

Note 1: Status where input stage L (8.2 µH) is shorted ‘‘*’’ represents output pins.

No.5108-2/5

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