Panasonic AN7353S Datasheet

ICs for Cassette, Cassette Deck

■ Overview

The AN7353S is a bipolar IC developed as a record
equalizer amp. of analogue cassette deck. Particularly in
order to support the automatic adjustment, it incorporates
various volume filter circuits and control functions. Also, it
has realized great reduction of external parts required.

■ Features

•

Fine adjustment of equalizer characteristics (frequency
characteristics and gain) in medium and high frequency
band by DC control

•

Volume for total gain adjustment built-in (±11dB)

•

With pin for low frequency band boost

•

Drive circuit for current output built-in

AN7353S

Record Equalizer Amp. for Stereo Cassette Deck

Unit : mm

0.1±0.1

2.0±0.2

0.3

0.925

0.15

0.45

1
2
3
4
5
6
7
8

9
10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

0.4±0.25

1.27

9.4±0.3

7.2±0.3

15.3±0.3

24-Lead SOP Package (SOP024-P-0375)

■ Block Diagram

GND CM

REC.
IN

(L)

CH Boost

(L)

CF

EQ
OUT

(L)

VR
IN

(L)

V

out (L)

I

out (L)

VCCCL

–V

CC

REC.
IN

(R)

IN
MUTE

CQ CP

EQ
OUT

(R)

VRIN

(R)

V

out

(R)

I

out (R)

NC CR

Amp.

Amp.

Amp.

Q

GT (L)

V

REF

Output
Sw.

Ireg –

GT (R)

GHGpfmfp

Amp.

Rec.

Rec.

L.P.F

fm
V– I

GH
V– I

L.P.F

fm
V– I

GH
V– I

GT
V– I

GT
V– I

V– I
Conv.

V– I
Conv.–

Q
V– I

Input
Sw.

fp
V– I

Gp
V– I

Q
V– I

fp
V– I

Gp
V– I

1 2 3 4 5 6 7

8

9 10 11 12

24 23 22 21 20 19 18

17

16 15 14 13

Boost

(R)

ICs for Cassette, Cassette Deck

AN7353S

V

CC

ICC (+)
I

CC

(–)

P

D

T

opr

T

stg

■ Absolute Maximum Ratings (Ta=25˚C)

Supply Voltage

Supply Current

Power Dissipation
Operating Ambient Temperature
Storage Temperature

V
mA
mA

mW

˚C
˚C

Parameter Symbol Rating Unit

±6.7

26
23

521

–25 ~ + 75

–55 ~ + 125

± 4.5V ~ ± 6.5V

■ Recommended Operating Range (Ta= 25˚C)

Parameter Symbol Range

Operating Supply Voltage Range

V

CC

■ Electrical Characteristics (VCC= ±6V, Ta=25±2˚C)

Parameter Symbol Condition min. typ. max. Unit

Reference Output (EQ Output)

– 4 –1.5 +1 dBv

VEQ

f

in

= 400Hz,

V

in

= –6dBv

Medium/High Frequency
Band Gain

GHH
GHL

–900

Voff

(EQ)

mV

Output Offset Voltage (EQ Output)

Rg = 0Ω

+500

f

in

= 10kHz,

V

in

= –12dBv, V

EQ

= 0dB

dB

3.5

–8.5

5.5

–6.5

7.5

– 4.5

HIGH
LOW

High Frequency Band
Peak Gain

GPH
GPL

V

in

= –30dBv

V

in

= –18dBv

dB

16

7

18

9

20
11

f

in

= 25kHz

V

EQ

= 0dB

GQW

GQL

f

in

= 10kHz,

V

in

= –18dBv, V

EQ

= 0dB

dB

2

–2.5

4.5
07+2.5

WIDE
NALLOW

High Frequency Band Peak
Band Width (10kHz Output)

VfPH

VfPL

f

in

= 35kHz

f

in

= 10kHz

V

3.85
1

4.25

1.2

4.65

1.4

HIGH
LOW

V

in

= –30dBv

GTH

GTL

V

in

= –18dBv

V

in

= 0dBv

dB

16.5

–5.5

18.5
–3.5

20.5
–1.5

HIGH
LOW

f

in

= 1kHz

(VR Input)

Volume Amp. Gain
(VOL Output)

V

in

= –14dBv

RL

V

= 10kΩ

V

in

= –14dBv

RL

V

= 1kΩ

Total Harmonics Distortion

VOL
CULL

THD

(RU)

THD

(RC)

f

in

= 1kHz

0.3

0.8
%

0.3

0.8

Maximum Output Voltage

V

O (RU)

V

O (RC)

RLV = 10kΩ
RL

V

= 1kΩ

Vrms

2.2
1

3.2

1.5

VOL

CULL

THD

= 3%

Output Noise Voltage
(CURR Output)

VN

(RC)

0.6 2

mV · rms

Rg = 0Ω
RL

V

= 1kΩ, DIN/AUDIO

Input Muting Attenuation
(EQ Output)

IM

(EQ)

40

dB

f

in

= 1kHz, 3p : OPEN

V

in

= – 6dBv

Output Muting Attenuation
(VOL Output)

OM

(RU)

60 dB

f

in

= 1kHz, V

CL

= 0.3V

V

in (VR)

= 0dBv

Output Offset Current
(CURR Output)

Voff

(RC)

–25

+25

µA

RL

V

= 1kΩ

RL

V

= 100kΩ

–9VPN

(RC)

mV

P–O

Pulse Noise Current (CURR Output)

R

g

= 0Ω

+9

High Frequency Band Peak
Frequency Control Voltage

Pin3 threshold value voltage
(Mute ON voltage)

Pin13 threshold value voltage
(Mute ON voltage)

Muting Control Voltage

Input Side

Output Side

VIM

VOM

3.9

GND

V

CC

V

0.3

20I

tot

mA

Consumption Current No signal

23

26

HIGH
LOW