Panasonic AN7337N Datasheet

ICs for Audio Common Use

■ Overview

The AN7337N is a graphic equalizer IC for high perfor­mance Hi-Fi developed for deck. It incorporates output
buffer circuit and 7 resonance buffer circuits, can set res­onance frequency by external capacitor.

■ Features

•

Low noise : V

no

= 4µVrms typ.

•

Low distortion : THD= 0.002% typ. (at VO = 1Vrms)

•

High output power : V

O

(max.)

= 9.5Vrms typ. (at. THD =

0.1%)

•

Wide operating supply voltage range : V

CC (opr.)

= ±4 ~

±18V

AN7337N

7-Element Graphic Equalizer IC for Hi-Fi

1
2
3
4
5
6
7
8
9

10

25.0±0.3

1.22±0.25

3 ~15˚

20
19
18
17
16
15
14
13
12
11

6.35±0.3

0.5±0.25

2.54

3.85±0.25 3.0±0.25

0.6±0.25

7.62±0.25

3.25±0.3

0.25

+ 0.1

– 0.05

20-Lead DIP Package (DIP020-P-0300A)

Unit : mm

■ Block Diagram

GND +V

–V

CC

20 19 18 17 16 15 14 13 12 11

Resonance

Section1
+
–

1 2 3 4 5 6 7 8 9 10

CC

Output Buffer

Resonance

Section2
+
–

–
+

Resonance

Section3
+
–

Resonance
Section7

Resonance

Section4
+
–

–
+

Resonance
Section6

Resonance

Section5
+
–

–
+

AN7337N

ICs for Audio Common Use

■ Absolute Maximum Ratings (Ta= 25˚C)

V

CC

I

CC

P

D

T

opr

T

stg

Supply Voltage
Supply Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature

V

mA

mW

˚C
˚C

Parameter Symbol Rating Unit

±18
±50

1,000

–20 ~ + 75

–55 ~ +150

Parameter Symbol Range

Operating Supply Voltage Range

V

CC

±4V ~ ±18V

■ Recommended Operating Range (Ta = 25˚C)

Parameter Symbol Condition min. typ. max. Unit
Total Circuit Current
Voltage Gain FLAT

Voltage Gain BOOST

Voltage Gain CUT
Total Harmonic Distortion

Max. Output Voltage
Output Noise Voltage
Output Noise Voltage

I

CC

G

V (FLAT)

G

V (Boost)

G

V (CUT)

THD

V

O (max.)

V

no

V

no (max.)

Vin= 0mV
f= 1kHz, V

in

= –10dBm

FLAT V

O

= 0dB,

V

in

= –10dBm

FLAT V

O

= 0dB,

V

in

= –10dBm

f= 1kHz, V

O

= 1Vrms
f= 1kHz, THD= 0.1%
Input Short, DIN/AUDIO
Input Short, ALL Boost

12

– 0.3

12

–12

0.002

9.5
4

31

16

0

14

–10.4

0.03

35

100

mA

dB
dB

dB

%

Vrms

µVrms
µVrms

8

– 0.6

10.4

–14

8

■ Electrical Characteristics (VCC = ±15V, Ta = 25˚C)

VO = 1Vrms
Ta = 25˚C

THD – VCC

0.1

0.05

0.03

0.02

0.01

0.005

0.003

0.002

0.001

Supply Voltage VCC (V)

Total Harmonic Distortion THD (%)

150 5 10 302520

V

CC –Vno

Input Short
DIN/AUDIO
Total Flat

Vno – VCC

10

8

6

4

2

0

Supply Voltage V

CC

(V)

Output Noise Voltage V

no

(µV)

120 4 8 242016

THD – VO

1

0.3

0.1

0.03

0.01

0.003

Output Voltage V

O

(dBV)

Total Harmonic Distortion THD (%)

–20 0 4020

V

CC

= ±

15V
f = 1kHz
Ta = 25˚C

CUT

Boost

FLAT

■ Characteristics Curve