SC9235 Silan, SC9235 Datasheet
SC9235
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SC9235 Summary of contents
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... ELECTRONIC VOLUME CONTROLLER WITH LOUDNESS CONTROL DESCRIPTION The SC9235 is 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 ...
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... Input pin UP DN INT UP Between INàGND resistor VR Analog switch ON resistor ON -- Volume resistor error between left and right 0dB F =1kHz IN V =1Vrms =100k L 0dB R =600 =33k x x SC9235 Ratings -0.3 ~15 +0.3V DD 300 = 9V) amb DD Min. Typ. Max. 4.5 9 0.3 1.0 2 0.01 1.0 0. ...
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... This input pin has built-in pull-up resistor. Back up mode input pin. Internal all operation is stopped by "L" input, and volume level remains with low current consumption. DC output pin for volume level meter. DC voltage which is corresponded to volume step is generated. SC9235 Description REV:1.1 2005.10.10 Page ...
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... Step 22 (46dB) initial value. , key input key 2.2×1/f ( 110ms) osc 10×1/f ( 500ms) osc 2×1/fosc( 100ms) SC9235 Step Attenuation 16 32(dB * ...
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... INT INT INT pin to the period while pin is "L" level is longer than 1ms when INH pin is "L" level, and prohibit input and output. SC9235 Output Voltage( ...
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... TEST CIRCUITS HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn SC9235 REV:1.1 2005.10.10 Page ...
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... Loudness circuit is left side, only volume (without loudness) circuit is right side. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Condenser for Backup DC-OUT INH OSC INT Cx LEVEL METER DRIVER IC C1=1500pF C1=0.1 F R=8.2k SC9235 DD +B OUT 1 4.7k RIGHT SIDE REV:1.1 2005.10.10 Page ...
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... PACKAGE OUTLINE DIP-16-300-2.54 SOP-16-225-1.27 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn SC9235 UNIT: mm UNIT: mm REV:1.1 2005.10.10 Page ...
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... Persons at a work bench should be earthed via a wrist strap. Equipment cases should be earthed. All tools used during assembly, including soldering tools and solder baths, must be earthed. MOS devices should be packed for dispatch in antistatic/conductive containers. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn SC9235 UNIT: mm REV:1.1 2005.10.10 Page ...
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... ATTACHMENT Revision History Data REV 2004.08.03 1.0 Original 2005.10.10 1.1 Add the package of “ SOP-16-375-1.27” . HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Description REV:1.1 SC9235 Page 2005.10.10 Page ...