SC5358 SILAN | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 9
Technical content
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 1 of 9 BLOCK DIAGRAM 6CH ELECTRONIC VOLUME CONTROLLER
DESCRIPTION
SC5358 is a 6channel electronic volume controller IC mainly designed for the current multichannel AV systems. It provides an I2C control interface, a selectable address and an attenuation range from 0 to – 79dB at 1dB/step.
FEATURES
- CMOS technology * I2C bus control interface * Selectable address * Attenuation range: 0~79dB(1dB/step) * Power supply: 5~9V * S/N>100dB * High Channel Separation
APPLICATIONS
- 5.1channel AV system * Computer multim edia system * Other multichannel systems
ORDERING INFORMATION
Part No. Package SC5358 DIP203002.54 SC5358S SOP203751.27
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 2 of 9 ABSOLUTE MAXIMUM RATINGS Characteristics Symbol Ratings Unit Supply Voltage VCC 12 V Operating Temperature Topr 20~+75 °C Storage Temperature Tstg 40~+125 °C Input Voltage Vi 0.3~VCC+0.3 V ELECTRICAL CHARACTERISTICS(VCC=9VˈVi=1Vrmsˈf=1kHzˈTemperature t=27ć) Characteristics Symbol Test conditions Min. Typ. Max. Unit Operating Voltage VCC 4 9 12 V Operating Current ICC VCC=9VˈVi=0V 7.5 9 mA Min. attenuation 0 Volume Attenuation Range ARAN Max. attenuation 79 dB Attention step ASTEP 1 dB Attention Step Gain Error GERR 0.5 dB Interchannel Attenuation Gain Error CERR 0.5 dB Maximum Output Voltage Vom ax VCC=9V,=1kHz,volume attenuation 0dBˈload resistor is 50kΩ ,THD<1% 2.0 2.3 2.5 Vrms Vout=2Vrms 0.07 0.09 % Total Harmonic Distortion THD f=1kHz,volume attenuation 0dB,load resistor is 50kΩ Vout=200mVrms 0.003 0.005 % Noise Output eNO V in=GND,volume attenuation 0dB. 2 3 µ Vrms Signal To Noise Ratio SNR Vin=1Vrms,volume attenuation 0dB 110 120 125 dB Channel Separation CS Vin=2.5Vrms,f=1kHz,volume attenuation 0dB 100 120 125 dB Mute Attenuation MUTE Vin=2.5Vrms,f=1kHz,volume attenuation 0dB. 90 95 97 dB Frequency Response FR Vin=2.5Vrms,volume attenuation 0dBˈTHD<3% 0.25 0.27 MHz Input Impedance Rin f=1kHz 48 kΩ Output Impedance Rout f=1kHz,V out=100mVrms 100 Ω I2C BUS SECTION ELECTRICAL CHARACTERISTICS Characteristics Symbol Conditions Min. Typ. Max. Unit Bus high input level VIH 0.5 VCC Bus low input level VIL 0.2 VCC
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 3 of 9 PIN CONFIGURATION PIN DESCRIPTION Pin No. Pin name Pin description
1 IN1 Input channel 1
2 IN2 Input channel 2
3 IN3 Input channel 3
4 A2 The 3rd bit of address
5 DGND "0"˄Usually connected to ground˅
6 SCL I2C clock input
7 SDA I2C data input
8 IN4 Input channel 4
9 IN5 Input channel 5
10 IN6 Input channel 6
11 OUT6 Output channel 6
12 OUT5 Output channel 5
13 OUT4 Output channel 4
14 GND Ground
15 REF Reference voltage output
16 VCC Power supply
17 A3 The 4th bit of address
18 OUT3 Output channel 3
19 OUT2 Output channel 2
20 OUT1 Output channel 1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 4 of 9 FUNCTION DESCRIPTION 1. I2C bus int erface SC5358 is connected to I2C bus via the SCL and SDA, controlled by MCU. Date validity A data on the SDA line must be stable when the SCL line is high state. It can be changed only when the SCL line is low state. Please refer to the figure below. Start and stop conditions A start condition is activated when the SCL is high state and the SDA shifts from high to low state. A stop condition is activated when the SCL is high state and the SDA shifts from low to high state. Please refer to the figure below. SDA SCL start condition stop condition Start and stop conditions are generated by MCU. The buses are busy after a start condition is activated and are idle after a while when a stop condition is activated. Byte format Every byte transmitted to the SDA line consists of 8 bits. Each byte must be followed by an acknowledge bit. The MSB is transmitted first. During the 9th clock pulse, MCU puts a resistive high level on the SDA line and waits for acknowledge signal. As a peripheral SC5358 must pull down the SDA line if acknowledging, or else keeps high state. Please refer to the figure below.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 5 of 9 2. Control of SC5358 A start condition An address byte including acknowledge bit N data bytes including acknowledge bits A stop condition Please refer to the figure below. The address byte of SC5358 can be set to 80H, 84H, 88H or 8CH through the 4th bit A3 and the 3rd bit A2. The descriptions of data bytes are as follows. 8bit data MSB LSB Function 0 0 0 0 0 B2 B1 B0 channel 3ˈ10db/step 0 0 0 1 A3 A2 A1 A0 channel 3ˈ1db/step 0 0 1 0 0 B2 B1 B0 channel 4ˈ10db/step 0 0 1 1 A3 A2 A1 A0 channel 4ˈ1db/step 0 1 0 0 0 B2 B1 B0 channel 2ˈ10db/step 0 1 0 1 A3 A2 A1 A0 channel 2ˈ1db/step 0 1 1 0 0 B2 B1 B0 channel 5ˈ10db/step 0 1 1 1 A3 A2 A1 A0 channel 5ˈ1db/step 1 0 0 0 0 B2 B1 B0 channel 1ˈ10db/step 1 0 0 1 A3 A2 A1 A0 channel 1ˈ1db/step 1 0 1 0 0 B2 B1 B0 channel 6ˈ10db/step 1 0 1 1 A3 A2 A1 A0 channel 6ˈ1db/step 1 1 0 1 0 B2 B1 B0 all channelsˈ10db/step 1 1 1 0 A3 A2 A1 A0 all channelsˈ1db/step 1 1 1 1 1 0 0 1 all channelsˈmute Low 4bit data A3 A2/B2 A1/B1 A0/B0 Atten.˄dB˅ 0 0 0 0 0/0 0 0 0 1 1/10 0 0 1 0 2/20 0 0 1 1 3/30 0 1 0 0 4/40 0 1 0 1 5/50 0 1 1 0 6/60 0 1 1 1 7/70 1 0 0 0 8/ 1 0 0 1 9/ SC5358 has no default setting, so it must be initialized.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 6 of 9 When adjusting the volume of a channel both a 10dB code and a 1dB code must be send just as follows. Example˖The setting of Channel 5 is 36dB. Start 1 0 0 0 1 0 0 0 ACK 0 1 1 0 0 0 1 1 ACK 0 1 1 1 0 1 1 0 ACK Stop Address=88H 30dB 6dB Start 1 0 0 0 1 0 0 0 ACK 0 1 1 1 0 1 1 0 ACK 0 1 1 0 0 0 1 1 ACK Stop Address=88H 6dB 30dB TYPICAL APPLICATION CIRCUIT (Address=88H) IN 1 IN 2 IN 3 DGND SCL SDA IN 4 IN 5 IN 6 OUT 6 OUT 5 OUT 4 GND REF Vcc OUT 1 OUT 2 OUT 3 MCU 10F 10F 10F 100K I2C bus 10F 10F 10F 10F 10F 10F Vo1 10F 10F 10F 10F 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 0.1F 10F Vo2 Vo3 Vo4 Vo5 Vo6Vi6 Vi5 Vi4 Vi3 Vi2 Vi1 VCC
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 7 of 9 PACKAGE OUTLINE DIP203002.54 Unit: mm 2.54 15 degree 0.51 26.4±0.3 1.27 0.51MIN SOP203751.27 Unit: mm 10.2±0.4 7.6±0.3 9.525
HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.1 2004.08.03 Http: www.silan.com.cn Page 8 of 9 HANDLING MOS DEVICES: Electrostatic charges can exist in many things. All of our MOS devices are internally protected against electrostatic discharge but they can be damaged if the following precautions are not taken:
- Persons at a work bench should be earthed via a wrist strap.
- Equipment cases should be earthed.ҏ
- 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 REV:1.1 2004.08.03 Http: www.silan.com.cn Page 9 of 9 ATTACHMENT
Revision History
2004.03.10 1.0 Original 2004.06.10 1.1 Modify the “ ELECTRICAL CHARACTERISTICS” 3