Datasheet SC5389, SC5389S Datasheet (SILAN)

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5-MODE PRESET EQUALIZER IC WITH
BASS BOOSTER & 3D EFFECTS

DESCRIPTION

The SC5389 is a 2-channel digital preset equalizer utilizing CMOS
technology. It provides 5 different sound selections, namely:
Flat/Normal, Rock, Pops, Classic and Jazz. Bass Booster and 3D
Effects may be added to any of 5 sound selections, thereby creating
more audio versatility. SC5389 provides two types of key selection
mode, namely: the Direct and the Cyclic. Pin assignment and
application circuit are optimized for cost saving advantages and easy
PCB layout.

SC5389

SDIP-24

FEATURES

* CMOS Technology
* Low TotalHarmonic Distortion and High S/N Ratio:

THD+N<0.01%, S/N>95dB

* LED Display Output Mode
* 5 Sound Selections Provided: Flat/Normal, Classic, Rock, Pops,

and Jazz

BL1
BL2

INR
BR1
BR2

1

INL

2
3

24
23
22

13

3D

Buffer

Buffer

Control Unit

14 15 16 17 18 19 11 9 12

BLED FLAT ROCK POPS

* Bass Booster Function & 3D Effect Provided
* 2-Channel Output
* Wide Operating Voltage Range: 5 – 9 V
* Direct or Cyclic Key Selection is Provided

PIN CONFIGURATION BLOCK DIAGRAM

INL

1
2

BL1
BL2

3

TL

4

OUTL

5

Vcc

6
BIAS
GND

MUTE

SC5389

7

8

SEL

9

10

CYC

11

BB 3D

12 13

24
23
22
21
20
19
18
17
16
15
14

INR
BR1
BR2
TR
OUTR
JAZZ
CLASSIC
POPS
ROCK
FLAT
BLED

ORDERING INFORMATION

SC5389
SC5389S

SDIP-24 Packaged
SOP-24 Packaged

APPLICATIONS

* Car Audio
* Mini compo
* Multimedia Audio Components

GNDV

CC

6 8

TrebleBass

Gain Selector

Bass Treble

JAZZ CYC SEL BB

CLASSIC

Mute

SOP-24

OUTL

5
4

TL

20

OUTR

21

TR

10

MUTE

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ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Rating Unit

Supply Voltage Vcc 10 V
Operating Temperature Topr -20 ~ 75 °C
Storage Temperature Tstg -40 ~ 125 °C
Input Voltage Vi -0.3 ~ Vcc+0.3 V

ELECTRICAL CHARACTERISTICS

Parameter Symbol Test conditions Min Typ Max Unit

Supply Voltage Vcc -- 5 9 9.5 V
Supply Current Icc Vcc = 9V, Vi = 0V, Flat mode -- 25 -- mA
Maximum Output Voltage V

Output Noise V

Total Harmonic Distortion THD

Input Impedance RINVcc = 9V -- 100 -- kΩ
Output Impedance R
High Level Input Voltage V
Low Level Input Voltage VILVcc = 9V 0.3Vcc -- -- V
Maximum Input Voltage V

OM

NO

OUT

IH

IMAX

(Unless otherwise specified, Vcc=9V, Vi=1Vrms, f=1kHz)

Vcc = 9V 2.5 -- -- Vrm
Vcc = 9V, Vi = 0V
BW = 20~20kHz A - Weighting
Vcc = 9V, Vi = 0.2Vrms
BW = 20~20kHz

Vcc = 9V -- 40 -- Ω
Vcc = 9V -- -- 0.7Vcc V

Vcc = 9V, Flat mode, BB & 3D Off -- -- 2.0 Vrms

SC5389

-- -- -90 dB

-- -- 0.01 %

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PIN DESCRIPTION

Pin

No

1 INL I Left channel input

2BL1--

3BL2--

4TL--

5 OUTL O Left channel output pin
6 Vcc -- Positive supply voltage
7 BIAS -- A capacitor may be connected between this pin and GND.
8 GND -- Ground
9 SEL I Select control pin

10 MUTE --

11 CYC I Cyclic select pin
12 BB I Bass booster control input pin
13 3D I/O 3D effect control input pin / output LED pin
14 BLED O Bass booster display pin
15 FLAT I/O Flat mode display & control input pin
16 ROCK I/O Rock mode display & control input pin
17 POPS I/O Pops mode display & control input pin
18 CLASSIC I/O Classic mode display & control input pin
19 JAZZ I/O Jazzmode display & control input pin
20 OUTR O Right channel output pin

21 TR --

22 BR2 --

23 BR1 --

24 INR I Right channel input pin

Symbol I/O Function

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Left bass control pin 1.
A capacitor may be connected between this pin and BL2.
Left bass control pin 2.
A capacitor may be connected between this pin and BL1.
Left treble control pin.
A capacitor may be connected between this pin and OUTL.

Mute pin.
The mute pin can eliminate the noise when mode changing occurs.
A capacitor may be connected between this pin and GND.

Right treble control pin
A capacitor is connected between this pin and OUTR.
Right bass control pin 2
A capacitor is connected between this pin and BR1
Right bass control pin1
A capacitor is connected between this pin and BR2

SC5389

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FUNCTIONAL DESCRIPTION

SC5389 is a 5-Mode Preset Equalizer IC with a Bass Booster and 3D Effects. It has 2 types of key selection mode,
namely: Direct and Cyclic. The Direct or Cyclic Key Selection Mode are determined by the SEL pin. Please refer to
the table below:

Key Selection Mode SEL Pin Description

Press FLAT key to active Flat Mode
Press ROCK Key to activate Rock Mode

Direct Low

Cyclic* Floating / High

Note: The Bass Booster Function and the 3D Effect can be controlled in the same manner under the Direct or

the

Cyclic Key Selection Mode. To turn the Bass Booster On or Off, press the BB Key. To turn the 3D Effect

On

or Off, press the 3D key.

* = Under the Cyclic Selection Mode, press the CYC key, to go to next sound selection.

Press POPS Key to activate Pops Mode
Press CLASSIC Key to activate Classic Mode
Press JAZZ Key to activate Jazz Mode

Flat Rock Pops

Jazz Classic

SC5389

Cyclic Key Selection Mode

As seen in the table above, the Cyclic Key Selection Mode is active when the SEL Pin is Floating or “High”. Under
this mode, any of the sound selections (Flat, Rock, Pops, Classic, Jazz) may be selected by pressing the CYC Key.
The default value is the Flat Mode. This means that when power is turned ON, the Flat mode is active. Pressing the
Cyclic Key lets you go from one sound selection to the other in the following order: Flat – Rock – Pops – Classic –
Jazz. Please refer to the diagram below.

Rock mode*

Power On Flat mode*

Jazz mode*

Note: * Press the CYC Key to activate the next mode

Press the BB Key to activate the Bass Booster Function
Press the 3D Key to activate the 3D Effect

Pops mode*

Classic mode*

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The BB Key controls the Bass Booster. When the power is turned ON, the Bass Booster is OFF. Likewise, the 3D
Key controls the 3D Effect. When the power is turned ON, the 3D Effect is OFF.

Direct Key Selection Mode

The Direct Key Selection Mode is active when the SEL Pin is set to “LOW”. As the name implies, you can directly
select the sound selection you like (Flat, Classic, Rock, Jazz, or Pops) simply by pressing the respective keys. This
means, that to select the Jazz mode, press the JAZZ Key, Classic Mode, press the CLASSIC Key and so forth. Take
note that when the power is turned ON, the Flat Mode is active. The Bass Booster Function and 3D Effect are
independent of the key / sound mode selected and may be turned On or Off at any time.

FREQUENCY RESPONSE

The following diagrams illustrate the various frequency response under the various sound selection (Flat, Rock,
Pops, Classic, Jazz and Bass Booster, 3D).

FLAT Mode Rock Mode

+25

+25

SC5389

+20

+15

+10

dB

+5

+0

-5
20 50 100 200 500 1k 2k 5k 10k 20k

Hz

Flat+3D

Flat+3D+BB

Flat+BB

Flat Mode

+20

Rock+BB

+15

Rock+3D

+10

Rock Mode

dB

+5

+0

-5
20 50 100 200 500 1k 2k 5k 10k 20k

Rock+3D+BB

Pops Mode Classic Mode

+25

+20

+15

dB

Pops+3D+BB

Pops+BB

+10

Pops+3D

+5

+0

Pops Mode

-5
20 50 100 200 500 1k 2k 5k 10k 20k

Hz

+25

+20

+15

+10

dB

+5

+0

-5

Classic+3D+BB

Classic+BB

Classic+3D

20 50 100 200 500 1k 2k 5k 10k 20k

Classic Mode

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JazzMode

+25

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SC5389

+20

+15

+10

dB

+5

+0

-5
20 50 100 200 500 1k 2k 5k 10k 20k

Jazz+3D+BB

Jazz+BB

Jazz+3D

Jazz Mode

Hz

Different sound selections exhibit different frequency gains at different frequency levels. Please refer to the table
below:

Sound Selection

f = 80Hz f = 1kHz f = 10kHz

Typ.

Unit

Flat 333
Rock 14 6.5 12.5
Pops 8 6 12.5

Classic 8.5 7 7.5

Jazz 14.5 7.5 10.5

Flat + Bass Booster 10 5 4
Rock + Bass Booster 18.5 7 12.5
Pops + Bass Booster 12.5 6.5 12.5

Classic + Bass Booster 13 7 8

Jazz + Bass Booster 18.5 7.5 10.5

Flat+3D 777

dB

Rock+3D 181016
Pops + 3D 11.5 9.5 16

Classic + 3D 12 9.5 11

Jazz + 3D 18 10.5 14

Flat + BB + 3D 14 8.5 7.5
Rock + BB + 3D 22.2 10.5 16.5
Pops + BB + 3D 16.5 10 16

Classic + BB + 3D 16.5 10.5 11

Jazz + BB + 3D 22.5 11 14

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TREBLE AND BASS ADJUSTMENTS

It is general knowledge that different individuals have different listening preferences. The application circuit of
SC5389 included in this specification has been designed for the taste general listening public; however, you can
make the necessary adjustment to suit your personal taste. Please refer to the sections below.

Treble Adjustment

The Treble adjustment is made by changing the value of the 2 capacitors connected between TL and OUTL. Please
refer to the diagram below.

+12
+11
+10

+9
+8
+7
+6
+5
+4

dB

+3
+2
+1

0

-1

-2

-3

-4
20 50 100 200 500 1k 2k 5k 10k 20k

TL-OUTL Capacitors vs. Frequency Response

Hz

1800pF
1500pF
1200pF

SC5389

As the capacitor value becomes bigger, the treble of the gain frequency curve is shifted down. Likewise, as the
capacitor value becomes smaller, the treble gain frequency curve shifts the opposite direction. Referring to the
diagram above, we see that at 6dB, different capacitor values exhibit different frequency responses. Capacitor value
1800pF has a lower frequency gain response than 1200pF capacitor.

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Bass Adjustment

Bass adjustments can be made by changing the values of the capacitors connected between BL1 – BL2 pins, and
BR1 – BR2 pins. The larger the capacitor value used, the frequency response curve shifts down. Likewise, the
capacitor value, the frequency response curve shifts the opposite direction. Please refer to the diagram below.

+12
+11
+10

+9
+8
+7
+6
+5
+4

dB

+3
+2
+1

0

-1

-2

-3

-4
20 50 100 200 500 1k 2k 5k 10k 20k

BL1—BL2 Capacitor vs. Frequency Response Curve

0.056µf

0.068µf

0.1µf

Hz

SC5389

In the diagram above, at 9 dB – different capacitor values exhibit different frequency responses. A capacitor with a
valueof0.1µf has smaller frequency response than a 0.056µf capacitor.

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APPLICATION CIRCUIT

Direct Key Mode

1µf

0.068µf

5.6kΩ

1500pf

1µf

100µf

0.1µf

0.1µf

OUT_L

10kΩ

IN_L

0.1µf

V

CC

1500pf

47µf

BB

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SC5389

INL

1

BL1

2

BL2

3
4
5
6
7
8

9
10
11
12 13

BR2

TL

OUTL

OUTR

Vcc

JAZZ

BIAS

CLASSIC

GND

POPS

SEL

ROCK

MUTE

FLAT

CYC

BLED

BB 3D

INR

BR1

SC5389

1500pf

1500pf

Jazz

1µf

0.068µf

5.6kΩ

Classic

24
23
22

TR

21
20
19
18
17
16
15
14

1µf

Pops

IN_R

VCC

4.7kΩ
OUT_R

10kΩ

3D

Rock

Flat

Cyclic Key Mode

OUT_L

10kΩ

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Note: Please use 0.068µf,

1500pf MylarCapacitors.

IN_L

5.6kΩ

1µf

V

CC

0.1µf

V

Note: Please use0.068µf,

1500pf Mylar Capacitors.

100µf

0.1µf

CC

4.7kΩ

1µf

0.068µf

1500pf

1500pf

0.1µf

1
2
3
4
5
6
7

47µf

8

9
10
11

CYC

12 13

BB

3D

LED

SC5389

INL

BL1

BR2

BL2

TL

OUTR

OUTL

JAZZ

Vcc

CLA-

BIAS

SSIC

GND

POPS

SEL

ROCK

MUTE

FLAT

CYC

BLED

BB 3D

470Ω

9

INR

BR1

470Ω

24
23
22

TR

21
20

1µf

0.068µf

1500pf

1500pf

19

5.6kΩ

1µf

IN_R

OUT_R

10kΩ

18
17
16
15
14

LED

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PACKAGE OUTLINE

DIP-24-300-2.54 UNIT:mm

2.54

SC5389

0.25

6.40

34.50

3.51

0.46

1.50

7.62

15

degree

5.083.30

SOP-24-375-1.27 UNIT:mm

10.45

7.70

9.53

1.27

15.34

15.74

0.41

1.95

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