SC9235A Datasheet PDF - Silan Semiconductors
| Part Number | SC9235A | |
| Description | 2-CH ELECTRONIC VOLUME CONTROLLER | |
| Manufacturers | Silan Semiconductors | |
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There is a preview and SC9235A download ( pdf file ) link at the bottom of this page. Total 10 Pages | ||
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SC9235
2-CH 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.
* Polysilicon resistors enables low-distortion, high-performance
volume systems.
* Volume level remains in backup mode with low current
consumption.
* Package is DIP16 and SOP16.
ORDERING INFORMATION
Part No.
SC9235
SC9235S
SC9235A
Package
DIP-16-300-2.54
SOP-16-225-1.27
SOP-16-375-1.27
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.10.10
Page 1 of 10
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SC9235
3. DC OUTPUT CIRCUIT FOR VOLUME LEVEL
DC output for volume level meter is internally connected to D−A converter (R/2R type).
8 stage output voltage which is corresponded to volume level is generated.
Because output impedance ≈ 22kΩ (typ.) is high, If input impedance of next setting level meter IC is low,
set to Buffer.
* Equivalence circuit
* Volume step and Output voltage
Step
Attenuation(dB)
Output Voltage(V)
0~3
0~6
7/ 8 VDD
4~7
8 ~ 14
6/ 8 VDD
8 ~ 11
16 ~ 22
5/ 8 VDD
12 ~ 15
24 ~ 30
4/ 8 VDD
16 ~ 19
32 ~ 38
3/ 8 VDD
20 ~ 23
40 ~ 50
2/ 8 VDD
24 ~ 27
54 ~ 66
1/ 8 VDD
28 ~ 31
70 ~ ∞
0
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 is set INT pin to the period while INT pin is "L" level is longer than 1ms when
Power on.
2) Backup operation
Internal operation is all stopped when INH pin is "L" level, and prohibit input and output.
Volume data is remains while Backup mode with low current consumption.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2005.10.10
Page 5 of 10
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SC9235A electronic component. |
| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SC9235A.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| SC9235 | The function is 2-CH ELECTRONIC VOLUME CONTROLLER. Silan Semiconductors | |
| SC9235A | The function is 2-CH ELECTRONIC VOLUME CONTROLLER. Silan Semiconductors | |
| SC9235S | The function is 2-CH ELECTRONIC VOLUME CONTROLLER. Silan Semiconductors | |
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