SC9235S SILAN [Silan Microelectronics Joint-stock], SC9235S Datasheet
SC9235S
Available stocks
Related parts for SC9235S
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 ...