MS6266

MOSA MS6266 6-Channel Electronic Volume Controller 6-Channel Volume Controller Gain and Attenuation 16~-79dB Low Voltage, High Channel Separation FEATURES ‧Operation range: 2.7V~6.5V ‧Low power consumption ‧Gain/Attenuation: 16dB to –79dB at 1dB/step ‧Good PSRR ‧I2C interface ‧Pop noise free ‧Housed in SSOP20, SOP20 APPLICATIONS ‧Multimedia system ‧Hi-Fi audio system ‧Car audio ‧Portable audio equipment DESCRIPTION The MS6266 is a 6-channel volume controller IC with gain and attenuation. It uses CMOS technology specially for the low voltage application with low noise, rail-to-rail output. The MS6266 provide an I2C control interface with gain / attenuation range of 16dB to -79dB, 1dB/step. The initial condition is set to be maximum attenuation –79dB and mute on mode when the power is on. PIN CONFIGURATION Symbol IN1 IN2 IN3 AC2 DGND SCL SDA IN4 IN5 IN6 OUT6 OUT5 OUT4 GND VREF VDD AC1 OUT3 OUT2 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 st Description 1 channel input 2nd channel input 3rd channel input Address code 2 Digital Ground I2C clock input I2C data input 4 channel input 5th channel input 6th channel input 6th channel output 5th channel output 4 channel output Analog ground Reference voltage = 1/2VDD Positive supply voltage Address code 1 3rd channel output 2nd channel output th th IN1 1 IN2 2 IN3 3 AC2 4 DGND 5 SCL 6 SDA 7 IN4 8 IN5 9 IN6 10 20 OUT1 19 OUT2 18 OUT3 17 AC1 MS6266 16 VDD 15 VREF 14 GND 13 OUT4 12 OUT5 11 OUT6 OUT1 20 1st channel output Note: 1. The address codes have four types, selected by AC1and AC2. REV 2 1/13 www.mosanalog.com MOSA BLOCK DIAGRAM IN1 -1dB/Step -10dB/Step MS6266 6-Channel Electronic Volume Controller 2dB/Step OUT1 IN2 -1dB/Step -10dB/Step 2dB/Step OUT2 IN6 -1dB/Step -10dB/Step 2dB/Step OUT6 VREF AC1 AC2 I C Interface 2 Reference source VDD GND SCL SDA DGND VREF ORDERING INFORMATION Package 20-Pin SOP (lead free) 20-Pin SOP (lead free) 20-Pin SSOP (lead free) 20-Pin SSOP (lead free) Part number MS6266GTR MS6266GU MS6266SSGTR MS6266SSGU Packaging Marking MS6266G MS6266G MS6266G MS6266G Transport Media 1k Units Tape and Reel 35 Units Tube 2.5k Units Tape and Reel 50 Units Tube ABSOLUTE MAXIMUM RATINGS Symbol VDD VESD TSTG TA TJ TS RTHJA Supply Voltage Electrostatic Handling Storage Temperature Range Operating Ambient Temperature Range Maximum Junction Temperature Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air SOP20 SSOP20 Parameter Rating 6.5 -3000 to 3000 -65 to 150 -40 to 85 150 260 210 210 Unit V V ℃ ℃ ℃ ℃ ℃/W OPERATING RATINGS Symbol VDD REV 2 Parameter Supply Voltage 2/13 Min 2.7 Typ - Max 6.5 Unit V www.mosanalog.com MOSA 5V ELECTRICAL CHARACTERISTICS MS6266 6-Channel Electronic Volume Controller (VDD=5.0V, VSS=0V, Attenuation=0dB, Gain=0dB, f=1kHz, VO=0dBV, VREF Cap=10uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics IQ AGA ASTEP EGA EIGA CS PSRR MUTE Rin Rout Vo THD+N S/N VIH VIL Quiescent current Gain/Attenuation Gain/Attenuation step Gain/Attenuation step error Interchannel gin/attenuation error Channel separation Power supply rejection ratio Mute Attenuation Input Impedance Output Impedance Maximum output voltage swing Total harmonic distortion plus noise Signal-to-noise ratio Bus high input level Bus low input level VO=4.8Vpp (THD+N)/S < 0.1% Cap = 10uF (100Hz) Vin=0dBV Max gain Max attenuation 95 18 95 0.3VDD 10.4 16 -79 1 0.3 0.3 105 53 85 20 50 4.8 -69 100 11 100 -64 0.7VDD mA dB dB dB dB dB dB dB dB kΩ Ω Vpp dB dB V V AC Characteristics Bus Characteristics 2.7V ELECTRICAL CHARACTERISTICS (VDD=2.7V, VSS=0V, Attenuation=0dB, Gain=0dB, f=1kHz, VO=-3dBV, VREF Cap=10uF; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics IQ CS PSRR MUTE Vo THD+N S/N Quiescent current Channel separation Power supply rejection ratio Mute Attenuation Maximum output voltage swing Total harmonic distortion plus noise Signal-to-noise ratio VO=2.6Vpp Cap = 10uF (100Hz) Vin=-3dBV (THD+N)/S < 0.1% 90 85 8.2 100 51 80 2.6 -69 90 8.8 -64 mA dB dB dB Vpp dB dB AC Characteristics REV 2 3/13 www.mosanalog.com MOSA TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, RL=100k, VREF Cap=10uF; unless otherwise specified) MS6266 6-Channel Electronic Volume Controller f=20kHz f=20Hz f=20Hz f=20kHz f=20Hz f=20kHz THD+N (%) THD+N (%) f=1kHz THD+N (%) f=1kHz f=1kHz VDD=5V VDD=3.3V VDD=2.7V OUTPUT VOLTAGE (dBV) OUTPUT VOLTAGE (dBV) OUTPUT VOLTAGE (dBV) THD+N vs. output voltage THD+N vs. output voltage THD+N vs. output voltage VDD=5V VO=0dBV CHANNEL SEPARATION (dB) VDD=3.3V VO=-3dBV VDD=2.7V VO=-3dBV THD+N (%) VDD=3.3V VO=-3dBV VDD=2.7V VO=-3dBV VDD=5V VO=0dBV FREQUENCY (Hz) FREQUENCY (Hz) QUIESCENT CURRENT (mA) SUPPLY VOLTAGE (V) THD+N vs. frequency Channel separation vs. frequency Quiescent current vs. supply voltage CAP=22uF CAP=22uF CAP=22uF PSRR (dB) PSRR (dB) CAP=10uF CAP=10uF PSRR (dB) CAP=10uF CAP=2.2uF CAP=2.2uF CAP=2.2uF VDD=5V VRR=-20dBV VDD=3.3V VRR=-20dBV VDD=2.7V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency REV 2 4/13 www.mosanalog.com MOSA I2C BUS DESCRIPTION Start and stop conditions MS6266 6-Channel Electronic Volume Controller A start condition is activated when the SCL is set to HIGH and SDA shifts from HIGH to LOW state. The stop condition is activated when SCL is set to HIGH and SDA shifts from LOW to HIGH state. Please refer to the timing diagram below. SCL SDA Start Stop SCL : Serial Clock Line, SDA : Serial Data Line Data validity A data on the SDA line is considered valid and stable only when the SCL signal is in HIGH state. The HIGH and LOW states of the SDA line can only change when the SCL signal is LOW. Please refer to the figure below. SDA SCL Data line stable, Data valid Data change allowed 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. Acknowledge During the Acknowledge clock pulse, the master (up) put a resistive HIGH level on the SDA line. The peripheral (audio processor) that acknowledges has to pull-down (LOW) the SDA line during the Acknowledge clock pulse so that the SDA line is in a stable LOW state during this clock pulse. Please refer to the diagram below. SCL 1 2 3 7 8 9 SDA MSB Start Acknowledge The audio processor that has been addressed has to generate an Acknowledge after receiving each byte, otherwise, the SDA line will remain at the HIGH level during the ninth (9th) clock pulse. In this case, the master transmitter can generate the STOP information in order to abort the transfer. REV 2 5/13 www.mosanalog.com MOSA Timing of SDA and SCL bus lines SDA tf SCL MS6266 6-Channel Electronic Volume Controller tLOW tr tSU;DAT tf tHD;STA tSP tr tBUF S tHD;STA tHD;DAT tHIGH tSU;STA Sr tSU;STO P S Standard mode Symbol fSCL tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tr tf tSU:STO tBUF Cb VnL VnH Parameter Min 0 4.0 4.7 4.0 4.7 0 250 4.0 4.7 - Max 100 3.45 1000 300 400 - Unit kHz us us us us us ns ns ns us us pF V V SCL clock frequency Hold time (repeated) START condition. After this period, the first clock pulse is generated LOW period of the SCL clock HIGH period of the SCL clock Set-up time for a repeated START condition Data hold time: For I2C-bus devices Data-set-up time Rise time of both SDA and SCL signals Fall time of both SDA and SCL signals Set-up time for STOP condition Bus free time between a STOP and START condition Capacitive load for each bus line Noise margin at the LOW level for each connected device (including 0.1VDD hysteresis) Noise margin at the HIGH level for each connected device (including 0.2VDD hysteresis) REV 2 6/13 www.mosanalog.com MOSA BUS INTERFACE MS6266 6-Channel Electronic Volume Controller Data are transmitted to and from the MCU to the MS6266 via the SDA and SCL. The SDA and SCL make up the BUS interface. It should be noted that pull-up resistors must be connected to the positive supply voltage. VDD Rp Rp Pull up resistors SDA (Serial Data Line) SCL (Serial Clock Line) MCU MS6266 Interface protocol The format consists of the following ‧A START condition ‧A chip address byte including the MS6266 address. (7bits) ‧The 8th bit of the byte must be “0”.(write=0, read=1) ‧MS6266 must always acknowledge the end of each transmitted byte. ‧A data sequence (N-bytes + Acknowledge) ‧A STOP condition SDA SCL 1-7 8 9 1-7 8 9 1-7 8 9 S START CONDITION ADDRESS W R / -- P ACK DATA ACK DATA ACK STOP CONDITION Address code The MS6266 has four address codes, they were selected by AC1(pin17)and AC2(pin4). AC1 0 0 1 1 AC2 0 1 0 1 Address code 80H 84H 88H 8CH 7 bits address MS6266 address W 1 0 AC1=1, AC2=0 0 0 1 0 0 0 0: connected to GND, 1: connected to VDD REV 2 7/13 www.mosanalog.com MOSA Data bytes description Function bits MSB 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 0 1 1 0 0 1 1 0 0 1 1 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 A3 B3 A3 B3 A3 B3 A3 B3 A3 B3 A3 B3 A3 B3 0 1 1 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 0 0 0 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 0 0 0 LSB A0 B0 A0 B0 A0 B0 A0 B0 A0 B0 A0 B0 A0 B0 1 1 0 MS6266 6-Channel Electronic Volume Controller Function 6 channels, -1dB/step 6 channels, -10dB/step or +2dB/step Channel 3, -1dB/step Channel 3, -10dB/step or +2dB/step Channel 4, -1dB/step Channel 4, -10dB/step or +2dB/step Channel 2, -1dB/step Channel 2, -10dB/step or +2dB/step Channel 5, -1dB/step Channel 5, -10dB/step or +2dB/step Channel 1, -1dB/step Channel 1, -10dB/step or +2dB/step Channel 6, -1dB/step Channel 6, -10dB/step or +2dB/step Power off preparation (pop noise free) 6 channels, mute On 6 channels, mute Off Gain / Attenuation bits A3 B3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 A2 B2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 A1 B1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A0 B0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Gain / Attenuation value (dB) A 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 B 0 -10 -20 -30 -40 -50 -60 -70 +2 +4 +6 +8 +10 +12 +14 +16 1. Where Ax=-1dB/step, Bx=-10dB/step or +2dB/step, -10dB and +2dB should not be loaded at the same time. 2. The initial condition is set to be maximum attenuation –79dB and mute on mode when the power on. 3. The output will drop down to ground gradually when enable power off preparation. 4. Odd gain 2N-1= N*(+2dB/step) + (-1dB), where N = 1~8. Please reference to examples. REV 2 8/13 www.mosanalog.com MOSA Examples MSB Start 80H, 84H, 88H, 8CH MS6266 Address LSB ACK 1 1 1 Data byte 1 1 0 0 0 ACK MS6266 6-Channel Electronic Volume Controller Mute off The initial condition is –79dB and mute on when power on. The first command must disable the mute function. Stop 6 channels, Mute off Set gain of 1st channel at 0dB Start MS6266 Address ACK 1 0 0 0 0 0 0 0 ACK 1 0 0 1 0 0 0 0 ACK Stop Ch 1, -10dB/step, 0dB Ch 1, -1dB/step, 0dB Set attenuation of 5th channel at -6dB Start MS6266 Address ACK 0 1 1 0 0 0 0 0 ACK 0 1 1 1 0 1 1 0 ACK Stop Ch 5, -10dB/step, 0dB Ch 5, -1dB/step, -6dB Set attenuation of 3rd channel at –33dB Start MS6266 Address ACK 0 0 0 0 0 0 1 1 ACK 0 0 0 1 0 0 1 1 ACK Stop Ch 3, -10dB/step, -30dB Ch 3, -1dB/step, -3dB Set gain of 3rd channel at 3dB Start MS6266 Address ACK 0 0 0 0 1 0 0 1 ACK 0 0 0 1 0 0 0 1 ACK Stop Ch 3, +2dB/step, 4dB Ch 3, -1dB/step, -1dB Odd gain 3dB = 2*2-1 = 2*(+2dB)+(-1dB) Set power off preparation command to prevent pop noise before power is off. Start MS6266 Address ACK 1 1 1 1 0 0 0 1 ACK Stop Power off preparation REV 2 9/13 www.mosanalog.com MOSA APPLICATION INFORMATION Basic application example MS6266 10uF Signal-1 In 10k 10uF Signal-2 In 10k 10uF Signal-3 In 10k 3 IN3 4 AC2 5 DGND 6 SCL MCU 7 SDA 10uF Signal-4 In 10k 10uF Signal-5 In 10k 10uF Signal-6 In 10k 10 IN6 OUT6 11 10uF 8 IN4 9 IN5 GND 14 OUT4 13 OUT5 12 10uF OUT3 18 AC1 17 16 10uF 1 IN1 2 IN2 OUT1 20 OUT2 19 10uF MS6266 6-Channel Electronic Volume Controller 10k 10uF 10k Signal-1 Out Signal-2 Out 10k Signal-3 Out VDD Supply 0.1uF 10uF 10uF VREF 15 10k 10uF 10k Signal-4 Out Signal-5 Out 10k Signal-6 Out AC1=Hi, AC2=Lo, Address=88H Basic application flow chart Procedure Of Power On Procedure Of Power Off Power on VDD = 5V Volume Control volume down to -79 dB step by step Initial Conditions function off (-79dB) mute on Enable Mute Function mute on Pop Noise Free wait 1 sec Pop Noise Free power off preparation wait 0.5 sec Disable Mute Function mute off Power off VDD = 0V Volume Control volume up/down step by step REV 2 10/13 www.mosanalog.com MOSA EXTERNAL DIMENSIONS SSOP20 D MS6266 6-Channel Electronic Volume Controller Detail A Symbol E1 E H x 45 c ZD A2 A θ2 e b A1 θ1 R1 L1 R θ Detail A L A A1 A2 b c e D E E1 L h L1 ZD R1 R θ θ1 θ2 Dimension in mm Dimension in inch Min Max Min Max 1.35 1.75 0.053 0.069 0.10 0.25 0.004 0.010 1.50 0.059 0.20 0.30 0.008 0.012 0.18 0.25 0.007 0.010 0.635 BASIC 0.025 BASIC 8.56 8.74 0.337 0.344 5.79 6.20 0.228 0.244 3.81 3.99 0.150 0.157 0.41 1.27 0.016 0.050 0.25 0.50 0.010 0.020 0.254 BASIC 0.010 BASIC 1.4732 REF 0.058 REF 0.20 0.33 0.008 0.013 0.20 0.008 o o o 0 8 0 8o 0o 0o 5o 15o 5o 15o SOP20 (300mil) D Detail A Symbol E H h x 45 C A A1 B C e D E H L h θ Dimension in mm Min Max 2.35 2.65 0.10 0.30 0.33 0.51 0.23 0.32 1.27 BSC 12.6 13 7.4 7.60 10.00 10.65 0.40 1.27 0.25 0.75 o 8o 0 Dimension in inch Min Max 0.0926 0.1043 0.004 0.0118 0.013 0.020 0.0091 0.0125 0.050 BSC 0.4961 0.5118 0.2914 0.2992 0.394 0.419 0.016 0.050 0.010 0.029 0o 8o A A1 e B 0.25mm θ Detail A L REV 2 11/13 www.mosanalog.com MOSA DEMO BOARD 4 MS6266 6-Channel Electronic Volume Controller 1 1 5 2 3 版面說明 1.電源輸入：AVDD及DVCC兩組電源皆使用2.7V~6.5V。 2.控制鍵： VOL+：音量控制鍵，每按一下此鍵+1dB，最大+16dB，當按下此鍵時指示燈（+）閃爍一次，音量控制達最 大（+16dB）時，則指示燈（+）保持在亮的狀態，系統啟動時之預設值為0dB。 VOL-：音量控制鍵，每按一下此鍵-1dB，最小-79dB，當壓下此鍵時指示燈（-）閃爍一次，音量控制達最 小（-79dB）時，則指示燈（-）保持在亮的狀態。 MUTE：MUTE ON/OFF 開關，系統啟動時為MUTE OFF。 CH：通道選擇鍵，作為選擇欲控制音量之通道（CH1~CH6或All Channel），選擇的通道如指示燈所示，當選 擇Channel 1則指示燈（CH1）亮，選擇All Channel時指示燈CH1~CH6）同時為亮，預設值為All Channel。 RESET：MCU重置鍵，按下此鍵可重置MCU狀態，在此表示系統返回預設值。 3.輸入端：由左至右分別為IN1~IN6，請連接於訊號源。 4.輸出端：由左至右分別為OUT1~OUT6請接於後級功率放大器。 5.位址選擇：參考MS6266 Data sheet並請使用短路環決定AC1及AC2之準位以決定使用之位址，此Demo board 使用之位址為88H，如下圖所示。 H AC2 L H AC1 L REV 2 12/13 www.mosanalog.com MOSA Circuit: J14 AVDD 1 2 J16 1 3 5 AC2 2 4 6 AC1 104 C17 + MS6266 6-Channel Electronic Volume Controller 10u C14 J15 DVCC 2 1 C18 + U1 1 2 3 4 5 6 7 8 9 10 IN1 IN2 IN3 AC2 DGND SCL SDA IN4 IN5 IN6 MS6266 OUT1 OUT2 OUT3 AC1 VDD VREF GND OUT4 OUT5 OUT6 20 19 18 17 16 15 14 13 12 11 104 + C15 10u RESET S5 10u R13 10k C19 20pF C20 20pF S1 S2 S3 S4 MUTE CH C13 10uF C16 U3 1 2 3 4 5 6 7 8 9 10 RST P3.0 P3.1 XTAL2 XTAL1 P3.2 P3.3 P3.4 P3.5 GND Vcc P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 P3.7 20 19 18 17 16 15 14 13 12 11 R14 R15 R16 R17 R18 R19 R20 R21 1k * 8 D8 D7 D6 D5 D4 D3 D2 D1 CH1 CH2 CH3 CH4 CH5 CH6 VOL+ VOL+ 12M + - AT89C2051 10u * 12 + + + + + + + + + + + + C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 100K * 12 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R22 10 2 1 2 1 2 1 2 1 2 1 2 1 1 2 1 2 1 2 1 2 1 2 J11 OUT2 1 2 J12 OUT1 J1 IN1 J2 IN2 J3 IN3 J4 IN4 J5 IN5 J6 IN6 J7 OUT6 J8 OUT5 J9 OUT4 J10 OUT3 REV 2 13/13 www.mosanalog.com