SC9235S SILAN [Silan Microelectronics Joint-stock], SC9235S Datasheet

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SC9235S

Manufacturer Part Number
SC9235S
Description
ELECTRONIC VOLUME
Manufacturer
SILAN [Silan Microelectronics Joint-stock]
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
SC9235S
Manufacturer:
MOT
Quantity:
18
ELECTRONIC VOLUME
DESCRIPTION
has been designed for electronization of volume control of audio
equipment, etc.
FEATURES
PIN CONFIGURATION
* This IC have 20dB tap for loudness circuit.
* Package is DIP16 and SOP16.
* Attenuation can be controlled from 0dB to -78dB by up, down
* This IC features a built-in DC output circuit (7 level) for volume
* Polysilicon resistors enables low-distortion, high-performance
* Volume level remains in backup mode with low current
GND-1
The SC9235 and SC9235S are an optimum CMOS IC which
input.
level meter.
volume systems.
consumption.
OUT-1
TP-1
OSC
IN-1
V
DN
UP
SS
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
1
2
3
4
5
6
7
8
Silan
Semiconductors
SC9235
16
15
14
13
12
11
10
9
V
OUT-2
IN-2
TP-2
GND-2
DC-OUT
INH
INT
DD
GND-1
OUT-1
BLOCK DIAGRAM
TP-1
OSC
IN-1
V
DN
UP
SS
1
2
3
4
5
6
7
8
1
DECODER
UP/DOWN
COUNTER
CONTROL
ORDERING INFORMATION
SC9235
SC9235S
CONVERTER
D-A
DIP-16 Package
SOP-16 Package
SC9235
Rev: 1.0
SOP-16
16
15
14
13
12
11
10
9
DIP-16
INH
INT
V
OUT-2
IN-2
TP-2
GND-2
DC-OUT
2000.12.31
DD

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SC9235S Summary of contents

Page 1

... Silan Semiconductors ELECTRONIC VOLUME DESCRIPTION The SC9235 and SC9235S are an optimum CMOS IC which has been designed for electronization of volume control of audio equipment, etc. FEATURES * Attenuation can be controlled from 0dB to -78dB by up, down input. * This IC have 20dB tap for loudness circuit. * This IC features a built-in DC output circuit (7 level) for volume level meter ...

Page 2

Silan Semiconductors ABSOLUTE MAXIMUM RATINGS Characteristic Supply Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS Parameter Operating Supply Voltage Operating Supply Current Backup Voltage Backup Current "H" Level Input Voltage "L" Level "H" Level Input Current "L" ...

Page 3

Silan Semiconductors PIN DESCRIPTION Pin No. Symbol 1 Vss Negative power supply pin 16 V Positive power supply pin DD 2 OUT-1 Volume output pins 15 OUT-2 3 IN-1 Volume input pins 14 IN-2 4 TP-1 Tap output pins for ...

Page 4

Silan Semiconductors FUNCTION DESCRIPTION 1. VOLUME CIRCUIT Volume circuit consist of ladder resistor and analog switch. Tap for loudness is connected to step 10 (20dB). Attenuation is as follows when resistor (3.9kΩ) is connected between TP pin and pin. * ...

Page 5

Silan Semiconductors 2. VOLUME UP, DOWN CONTROL CIRCUIT Volume up, down control is executed key input. * The 1 step / 1 push volume is controlled by "L" level key ...

Page 6

Silan Semiconductors 4. INITIALIZATION AND BACKUP OPERATION 1) Initialization operation When power on, volume level is set to initial value (46dB) by setting INT pin to "L" level for a while Adjust condenser value which ...

Page 7

Silan Semiconductors TEST CIRCUITS V 1/2 VDD THD —Vout 1 fin=1kHz,Rg=600Ω RL=100kΩ,HPF=20Hz LPF=80kHz V 0.1 0.01 0.001 0.01 0.1 Vout (Vrms) HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD 1 2 600Ω SC9235 ...

Page 8

Silan Semiconductors TYPICAL APPLICATION CIRCUIT OUT 1 Key DOWN Key LEFT SIDE (Note) Loudness circuit is left side, only volume (without loudness) circuit is right side. C1=1500pF C1=0.1μF R=8.2kΩ HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD ...

Page 9

Silan Semiconductors PACKAGE OUTLINE 16-DIP-P-300 16-SOP-P-225 1.27 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD 2.54 1.50 19.4 0.46 0.41 10.20 9.80 9 SC9235 UNIT:mm 15 degree UNIT:mm Rev: 1.0 2000.12.31 ...

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