Panasonic AN3328S Datasheet

ICs for VCR

AN3328S

2-head recording and playback amplifier IC (A2) for HiFi VCR

■ Overview

The AN3328S is a 2-head recording and play­back amplifier IC for HiFi audio, and realized
reduction of pin numbers. The package is a small
outline of 16 pins, 1.27 mm pitch and supply volt­age is 5 V of single supply.

■ Features

• Damping-less amp. in playback system

• No adjustment of recording current by AGC

• 3-step switchover of recording current level with
the current emphasis switch (typ. ± 1.8 dB)

■ Applications

• HiFi VCR

■ Block Diagram

−0.05

+0.10

0.15

Seating plane

Unit: mm

0° to 10°

0.50 ± 0.20

10.09 ± 0.20

16 9

4.30 ± 0.20

6.40 ± 0.30

18

0.65 ± 0.100.65 ± 0.10

1.50 ± 0.200.10 ± 0.10

(0.60)

1.27

0.40 ± 0.10
Seating plane

SOP016-P-0225C

REC / PB selectHSW

16

1

REC C

15

2

REC reg1

PB out &

REC / mute

14

HA1 HA2

3

CH1 in

REC in

13

LH

4

GND (small signal)

GND

12

5

CH2 in

11

AGC

6

REC reg2

Det

V

10

Curr.
Amp.

7

REC out

CC

REC curr. monitor

9

8

Curr. emph. SW

1

AN3328S ICs for V CR

■ Pin Descriptions

Pin No. Description

1 Audio head SW
2 REC regulator1
3 Head amp. input ch.1
4 GND (small signal)
5 Head amp. input ch.2
6 REC regulator2
7 REC out
8 Curr. emph. SW

Pin No. Description

9 REC curr. monitor (control)

10 V

CC

11 REC AGC det
12 GND
13 REC input
14 PB out & REC / mute SW
15 REC C
16 REC/PB select SW

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit

Supply voltage V
Supply current I
Power dissipation
Operating ambient temperature
Storage temperature

Note)*1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.

2: The power dissipation shown is for the IC package in free air at Ta = 70°C.

*

*2

*1

*1

CC

CC

P

D

T

opr

T

stg

6V

 mA

240 mW

-20 to +70 °C

-55 to +125 °C

■ Recommended Operating Range

Parameter Symbol Range Unit

Supply voltage V

CC

4.5 to 5.5 V

2

ICs for VCR AN3328S

■ Electrical Characteristics at Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

REC I

10(REC)

Circuit current REC / PB SW: High
REC I

AGC level REC / PB SW: High
REC DI

AGC control characteristics REC / PB SW: High
REC Recording current D

2nd harmonic distortion VIN = 260 mV[p-p], 2 MHz
REC V

Mode hold voltage VIN = 260 mV[p-p], 2 MHz
REC V

Over REC hold voltage REC / PB SW: High
REC V

Normal hold voltage REC / PB SW: High
REC V

S-VHS hold voltage REC / PB SW: High
REC I

7L

Over REC current ratio REC / PB SW: High
REC I

7H

S-VHS current ratio REC / PB SW: High
REC V

14H(REC)VCC

Mute hold voltage 1 REC / PB SW: High
REC V

14L(REC)VCC

Mute hold voltage 2 REC / PB SW: High
PB I

10(PB)

Circuit current REC / PB SW: Low
PB G

CH1 gain HSW: High, VIN = 0.1 mV[p-p], 2 MHz
PB G

CH2 gain HSW: Low, VIN = 0.1 mV[p-p], 2 MHz
PB DG

CH1 1.5 M / 2 M gain ratio HSW: High, VIN = 0.1 mV[p-p], 2 MHz
PB DG

CH2 1.5 M / 2 M gain ratio HSW: Low, VIN = 0.1 mV[p-p], 2 MHz
PB G

3-14

CH1 / CH2 gain ratio G
Noise referred to PB N

CH1 input REC / PB SW: Low HSW: High
Noise referred to PB N

CH2 input REC / PB SW: Low HSW: Low

Note) The typical value in the parenthesis is not the guaranteed one.

VCC = 5.0 V 56 (66) 76 mA

V

7

7

7

16H

8L

8M

8H

= 5.0 V 44 (48) 52

CC

VCC = 5.0 V  (0.2) 1.0 dB

VCC = 5.0 V, REC / PB SW: High  (−43) −35 dB

VCC = 5.0 V, REC / Mute SW: Low 3.6  Vcc V

VCC = 5.0 V 0  1.2 V

VCC = 5.0 V 1.8  3.2 V

VCC = 5.0 V 3.8  Vcc V

mA[p-p]

→ I7VCC = 5.0 V 1.3 (1.8) 2.3 dB

→ I7VCC = 5.0 V −2.3 (−1.8) −1.3 dB

= 5.0 V 3.6  Vcc V

= 5.0 V 0  1.4 V

VCC = 5.0 V 9 (13) 17 mA

VCC = 5.0 V, REC / PB SW: Low 72 (76) 80 dB

3-14

VCC = 5.0 V, REC / PB SW : Low 72 (76) 80 dB

5-14

VCC = 5.0 V, REC / PB SW: Low 0 (0.5) 1 dB

3-14

VCC = 5.0 V, REC / PB SW: Low 0 (0.5) 1 dB

5-14

→ VCC = 5.0 V, REC / PB SW: Low −20 2dB

5-14VIN

3-14

5-14

= 0.1 mV[p-p], 2 MHz

VCC = 5.0 V 1.0

VCC = 5.0 V 1.0

mV[rms]

mV[rms]

3