ICs for VCR

AN3336SB 4-Head VCR Recording/Playback Amplifier IC ■ Overview

Unit : mm 36

15.2±0.30

1

0.3±0.11

The AN3336SB is a recording/playback amplifier IC for 4-head VCR. It includes RF-AGC, automatic tracking I/O, and envelope comparing circuit.

■ Features 0.8

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• Playback VCC = 5.0V, recording VCC = 12V • Built-in RF-AGC circuit • Built-in automatic tracking I/O circuit • Built-in envelope comparing circuit

(0.28)

0.5

2.85±0.2

1.3±0.25

0.1±0.1

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1.3±0.25

19

0.1 0.2 +– 0.05

18

8.4±0.30 11.93±0.30 36-Pin SSOP package (SSOP036-P-0450A)

■ Pin Descriptions Pin No.

Pin No.

Pin name

Head switching

19

Evelope detector capacitor for ch 3 and ch 4

Envelope ON/OFF switching

20

Peaking for recording

3

Ch 1 head amp. damping

Automatic tracking output

4

Ch 1 head amp. input

21 22

5

Small-signal ground

23

Automatic tracking control

6 7

Ch 2 head amp. input

Automatic tracking VCC

Ch 2 head amp. damping

24 25

8

Sub-ground

26

Chroma output

9

Sub-ground

27

Sub-ground

10

Ch 3 head amp. damping

28

Sub-ground

11 12

Ch 3 head amp. input

Sub-ground

Small-signal ground

29 30

13

Ch 4 head amp. input

31

AGC output

14

Ch 4 head amp. damping

32

AGC detector capacitor

15

Rec. current amp. (LP) output

33

Envelope detector capacitor for ch 1 and ch 2

16 17

Rec. feedback

Head amp. switching

Rec. current amp. (SP) output

34 35

Rec. VCC

36

Playback VCC

ed

1 2

18

Automatic tracking detector capacitor

Rec. Y–input

Recording C–input

ENV output, recording bias

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Pin name

1

ICs for VCR

AN3336SB ■ Block Diagram PB 5V VCC

+

HASW

C– IN

ENV

AT GCA Y– IN

AT OUT

SUB– GND MAIN– GND

0.1µF 1.5kΩ

0.1µF

0.01µF

33kΩ

36

35

34

33

32

Det.

31

30

29

28

27

26

25

24

23

22

AGC

21

20

19

Det.

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CHROMA Amp.

LOG

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Mix.

Comp.

Det.

Rec Logic

Det.

L

SP

H

H

L

HA1

L

HA2

H

LP

H

HA3

LP

L

SP

HA4

PB ON

1

2

3

4

+ 1µF

5

6

0.01µF 0.01µF

*100Ω

HSW

ENV OFF

7

8

9

+ 1µF

*100Ω

10

1µF

SUB–GND

11

+

12

13

0.01µF 0.01µF

*100Ω

14

15

+ 1µF

*100Ω

16

0.1µF

*

250 Ω

PB ON

18

17

0.01µF 0.1µF

+

*

250 Ω

Rec VCC 12V

H

Note) The resistance of notation* should be between 0 and 500 ohms.

■ Absolute Maximum Ratings Parameter

Symbol

Supply voltage (1)

Unit

6 13

V

440

mW

Operating ambient temperature Note 1)

PD Topr

–20 to +70

˚C

Storage temperature Note 1)

Tstg

–55 to +125

˚C

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PB VCC Rec VCC

(p

Supply current (2) Power dissipation Note 2)

Note 1) Ta=25˚C for except ambient temperature and storage temperatures. Note 2) Allowable power dissipation of the package at Ta=70˚C.

2

Rating

V

ICs for VCR

AN3336SB

■ Recommended Operating Range (Ta=25˚C) Parameter

Symbol

Range

Operating supply voltage range (1)

PBVCC

4.5V to 5.5V

Operating supply voltage range (2)

RecVCC

8.5V to 12.5V

■ Electrical Characteristics (Ta=25±2˚C) Parameter

Symbol

Condition

I36

PB VCC=5V

CH 1 gain

G4–26

PB VCC=5V

CH 2 gain

G6–26

PB VCC=5V

min

typ

max

Unit

56

mA

53

61

dB

53

61

dB

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PB circuit current

CH 3 gain

G11–26

PB VCC=5V

53

61

dB

CH 4 gain

G13–26

PB VCC=5V

53

61

dB

HSW change-over sensitivity

S1

PB VCC=5V

3.8

V

HASW change-over sensitivity

S34

PB VCC=5V

3.8

AGC control sensitivity HSW DC unbalance (I)

HSW DC unbalance (II)

HASW DC unbalance (I)

HASW DC unbalance (II)

Input conversion noise (1) Input conversion noise (2) Input conversion noise (3) Input conversion noise (4)

V4–31

PB VCC=5V

130

mVP–P

∆V4–31

PB VCC=5V

3.0

dB

PB VCC=5V

100

mVP–P

HSW26 (II)

PB VCC=5V

100

mVP–P

HASW26 (I)

PB VCC=5V

100

mVP–P

HASW26 (II)

PB VCC=5V

100

mVP–P

N4–26/G4–26

PB VCC=5V

1.0

µVrms

N6–26/G6–26

PB VCC=5V

1.0

µVrms

N11–26/G11–26

PB VCC=5V

1.0

µVrms

N13–26/G13–26

PB VCC=5V

1.0

µVrms

1.0

V21min.

PB VCC=4.8V

Auto tracking max. output

V21max.

PB VCC=4.8V

3.8

V35

PB VCC=5V

3.5

I18

Rec VCC=12V

Rec. circuit current

270

HSW26 (I)

Auto-tracking output at no-input ENV output amplitude

V

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AGC output amplitude

V

V

VP–P

48

mA

I17

Rec VCC=12V

17

32

mAP–P

LP Y–Rec. current output ratio

I15/I17

Rec VCC=12V

– 2.5

2.5

dB

SP 8MHz f characteristics ratio

I17H/I17

Rec VCC=12V

–4

LP 8MHz f characteristics ratio

I15H/I15

Rec VCC=12V

–4

Rec. chroma output ratio

I17C/I17

Rec VCC=12V

–15

SP Y–Rec. current output

PB circuit current CH 1 gain CH 2 gain CH 3 gain CH 4 gain

AGC output amplitude

dB dB

–7

dB

I36

PB VCC=5V

(43)

mA

G4–26

PB VCC=5V

(57)

dB

G6–26

PB VCC=5V

(57)

dB

G11–26

PB VCC=5V

(57)

dB

G13–26

PB VCC=5V

(57)

dB

V4–31

PB VCC=5V

(200)

mVP–P

Rec VCC=12V

(33)

mA

I17

Rec VCC=12V

(12)

mAP–P

I17C/I17

Rec VCC=12V

(–12)

dB

D2f

Rec VCC=12V

(– 43)

dB

Cross-modulation relative level

DM

Rec VCC=12V

Auto tracking SP output voltage (1)

V21SP1

PB VCC=4.8V, Vin=400mVP–P

(3.4)

(3.9)

V

Auto tracking SP output voltage (2)

V21SP2

PB VCC=4.8V, Vin=100mVP–P

(1.5)

(2.5)

V

PB VCC=4.8V

(0.1)

(0.5)

V

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SP Y–Rec. current output

ed

I18

Rec circuit current

(p

Rec. chroma output ratio

Rec. current 2nd harmonics distortion

Auto tracking LP output voltage difference V21LP–V21SP2

(– 48)

dB

Note) The characteristics value in parentheses is not a guaranteed value, but reference one on design.

3

ICs for VCR

AN3336SB ■ Functional Descriptions 1. Playback mode • Pin36 (playback VCC) = 5V typ. (Pins15 and 17 are grounded internally) • Pin18 (recording VCC) = open (1) Selecting a head amplifier output channel

Input pin

Head SW Pin1

HASW Pin34

1

4

H

L

2

6

L

L

3

11

L

H

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Channel

LP

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SP

4

13

H

H

(2) Starting the envelope comparator Env. ON/OFF SW Pin2

Open

Low (special playback)

Env. comparator

Inactive

Active

(3) Automatic tracking interface Pin24 (automatic tracking VCC) = 5V typ.

HASW(Pin24)

Automatic tracking

High

LP SP

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ed

Low

4

• When the SP mode of the automatic tracking interface switches to the LP mode, the gain of the amplifier increases 5.5dB. • When the gain control voltage at Pin23 increases, the gain of the circuit increases.

ICs for VCR

AN3336SB

2. Recording mode Pin18 (recording VCC) =12V typ. Pin36 (playback VCC) Pin24 (automatic tracking VCC)

}

Opened or grounded

Pin35 : Recording internal bias current control How to control :

• When the external resistance decreases, the internal circuit bias current (Itotal) increases.

35 R

M Di ain sc te on na tin nc ue e/ d

• R should be 27 to 33kΩ.

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HASW control at Pin34

HASW Pin34

SP output

LP output

Pin11,13

Pin4,6

Pin19

H

OFF

active

GND

Diode

Open

active

OFF

Diode

GND

GND

L

■ Reference

PD—Ta

2.000 1.800

On glass-epoxy print board (50mm × 50mm × t 0.8mm) Rthj–a=69˚C/W PD=1449mW(25˚C)

1.449 1.400 1.200

833 800 600 400 200 0

25

50

75

lan

0

ed

IC without heatsink Rthj–a=120˚C/W PD=833mW (25˚C)

1.000

100

125

150

Ambient temperature Ta (˚C)

(p

Power dissipation PD (mW)

1.600

5

Request for your special attention and precautions in using the technical information and semiconductors described in this book (1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products, and no license is granted under any intellectual property right or other right owned by our company or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) The products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: – Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. – Any applications other than the standard applications intended.

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(4) The products and product specifications described in this book are subject to change without notice for modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements.

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yp

e)

(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.

(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.

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(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of Matsushita Electric Industrial Co., Ltd.