Silan
Semiconductors
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 Total Harmonic 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
* Bass Booster Function & 3D Effect Provided
* 2-Channel Output
* Wide Operating Voltage Range: 5 – 9 V
* Direct or Cyclic Key Selection is Provided
SOP-24
ORDERING INFORMATION
SC5389
SC5389S
SDIP-24 Packaged
SOP-24 Packaged
APPLICATIONS
* Car Audio
* Mini compo
* Multimedia Audio Components
PIN CONFIGURATION
INL
BL1
BL2
TL
OUTL
Vcc
BIAS
GND
SEL
1
2
3
4
5
6
24 INR
23 BR1
22 BR2
21 TR
20 OUTR
19 JAZZ
BLOCK DIAGRAM
V
CC
6
GND
8
5 OUTL
Buffer
INL 1
BL1 2
BL2 3
Bass
Treble
4 TL
Gain Selector
Buffer
20 OUTR
SC5389
7
8
9
18 CLASSIC
17 POPS
16 ROCK
15 FLAT
14 BLED
13 3D
INR 24
BR1 23
BR2 22
3D 13
Bass
Treble
21 TR
MUTE 10
CYC 11
BB 12
Control Unit
Mute
10 MUTE
14
BLED
15
FLAT
16
17
18
19
11
9
12
BB
ROCK POPS CLASSIC JAZZ
CYC SEL
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
1
Silan
Semiconductors
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Operating Temperature
Storage Temperature
Input Voltage
SC5389
Symbol
Vcc
Topr
Tstg
Vi
Rating
10
-20 ~ 75
-40 ~ 125
-0.3 ~ Vcc+0.3
Unit
V
°C
°C
V
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Vcc=9V, Vi=1Vrms, f=1kHz)
Parameter
Supply Voltage
Supply Current
Maximum Output Voltage
Output Noise
Symbol
Vcc
Icc
V
OM
V
NO
Test conditions
--
Vcc = 9V, Vi = 0V, Flat mode
Vcc = 9V
Vcc = 9V, Vi = 0V
BW = 20~20kHz A - Weighting
Vcc = 9V, Vi = 0.2Vrms
BW = 20~20kHz
Min
5
--
2.5
--
Typ
9
25
--
--
Max
9.5
--
--
-90
Unit
V
mA
Vrm
dB
Total Harmonic Distortion
Input Impedance
Output Impedance
High Level Input Voltage
Low Level Input Voltage
Maximum Input Voltage
THD
R
IN
R
OUT
V
IH
V
IL
V
IMAX
--
--
--
--
0.3Vcc
--
--
100
40
--
--
--
0.01
--
--
0.7Vcc
--
2.0
%
kΩ
Ω
V
V
Vrms
Vcc = 9V
Vcc = 9V
Vcc = 9V
Vcc = 9V
Vcc = 9V, Flat mode, BB & 3D Off
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
2
Silan
Semiconductors
PIN DESCRIPTION
Pin
No
1
2
SC5389
Function
Left channel input
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.
Left channel output pin
Positive supply voltage
A capacitor may be connected between this pin and GND.
Ground
Select control pin
Mute pin.
Symbol
INL
BL1
I/O
I
--
3
BL2
--
4
5
6
7
8
9
TL
OUTL
Vcc
BIAS
GND
SEL
--
O
--
--
--
I
10
MUTE
--
The mute pin can eliminate the noise when mode changing occurs.
A capacitor may be connected between this pin and GND.
11
12
13
14
15
16
17
18
19
20
21
CYC
BB
3D
BLED
FLAT
ROCK
POPS
CLASSIC
JAZZ
OUTR
TR
I
I
I/O
O
I/O
I/O
I/O
I/O
I/O
O
--
Cyclic select pin
Bass booster control input pin
3D effect control input pin / output LED pin
Bass booster display pin
Flat mode display & control input pin
Rock mode display & control input pin
Pops mode display & control input pin
Classic mode display & control input pin
Jazz mode display & control input pin
Right channel output pin
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
Right channel input pin
22
BR2
--
23
24
BR1
INR
--
I
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
3
Silan
Semiconductors
FUNCTIONAL DESCRIPTION
SC5389
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
Press POPS Key to activate Pops Mode
Press CLASSIC Key to activate Classic Mode
Press JAZZ Key to activate Jazz Mode
Cyclic*
Floating / High
Flat
Jazz
Rock
Pops
Classic
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.
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*
Pops mode*
Jazz mode*
Classic 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
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
4
Silan
Semiconductors
SC5389
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
+25
+20
Rock Mode
+25
+20
Rock+BB
Rock+3D+BB
+15
+15
Rock+3D
+10
dB
+5
Flat+3D+BB
Flat+3D
+0
Flat Mode
-5
Flat+BB
+10
dB
+5
Rock Mode
+0
-5
20
50
100
200
500
1k
Hz
2k
5k
10k
20k
20
50
100
200
500
1k
Hz
2k
5k
10k
20k
Pops Mode
+25
+20
Classic Mode
+25
+20
+15
Pops+3D+BB
dB
+10
Pops+BB
Pops+3D
+5
Pops Mode
+15
Classic+3D+BB
Classic+BB
+10
dB
+5
Classic+3D
Classic Mode
+0
+0
-5
20
50
100
200
500
Hz
1k
2k
5k
10k
20k
-5
20
50
100
200
500
1k
Hz
2k
5k
10k
20k
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2000.12.31
5
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