MS6258GTR

MOSA MS6258 Gain And Attenuation Volume Controller IC Gain and Attenuation Volume Controller IC 4 Sets of Stereo Input, Low voltage Gain and Attenuation 15~-79dB FEATURES ‧ ‧ ‧ ‧ Operation range: 2.7V~6.5V. Low power consumption. Gain/Attenuation: 15dB to –79dB. +1dB/step, -1dB/step and -10dB/step are controlled independently. ‧ Good PSRR and low pop noise. ‧ I2C interface. ‧ Housed in 16 pin SOP, SSOP package. APPLICATIONS ‧ Multimedia system. ‧ Hi-Fi audio system. ‧ MP3，PDA. DESCRIPTION The MS6258 is a stereo audio volume controller IC with 4 sets of stereo input. It uses CMOS technology specially for the low voltage application with low noise, rail-to-rail output. The MS6258 provide an I2C control interface with gain / attenuation range of 15dB to -79dB. The gain and attenuation, +1dB/step, -1dB/step and -10dB/step are controlled independently. The initial condition is set to be maximum attenuation –79dB (-70dB + -9dB), gain 0dB and mute on mode when the power is up. BLOCK DIAGRAM Gain 0~15dB Attenuation 0~-79dB L-IN1 L-IN2 L-IN3 L-IN4 1dB/Step -1dB/Step -10dB/Step L-OUT Serial Bus Decoder and Latches Mute Control R-IN1 R-IN2 R-IN3 R-IN4 1dB/Step Gain 0~15dB -1dB/Step -10dB/Step REF R-OUT Attenuation 0~-79dB I2C Interface Reference Circuit SDA SCL VREF REV 6 1 www.mosanalog.com MOSA PIN CONFIGURATION Symbol A.O. L-IN4 L-IN3 L-IN2 L-IN1 L-OUT VSS SDA SCL VDD R-OUT R-IN1 R-IN2 R-IN3 R-IN4 VREF Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description Address option * 4th left channel input 3rdleft channel input 2nd left channel input 1st left channel input Left channel output Ground I C data input I C clock input Positive supply voltage Right channel output 1 right channel input 2nd right channel input 3 right channel input 4th right channel input Reference voltage = 1/2VDD SDA rd st 2 2 MS6258 Gain And Attenuation Volume Controller IC A.O. 1 16 VREF 15 R-IN4 L-IN4 2 L-IN3 3 14 R-IN3 L-IN2 4 MS6258 MS6258 13 R-IN2 L-IN1 5 12 R-IN1 L-OUT 6 11 R-OUT VSS 7 10 VDD 9 SCL 8 Note: 1. Pin 1 is set to Lo or open , the address code is 88H (10001000B). 2. Pin 1 is set to Hi , the address code is 8CH (10001100B). 3. The VREF connects a capacitor to Vss. ORDERING INFORMATION Package 16-Pin SOP (lead free) 16-Pin SOP (lead free) 16-Pin SSOP (lead free) 16-Pin SSOP (lead free) RoHS Compliance Part number MS6258GTR MS6258GU MS6258SSGTR MS6258SSGU Packaging Marking MS6258ASG MS6258ASG MS6258G MS6258G Transport Media 2.5k Units Tape and Reel 50 Units Tube 2.5k Units Tape and Reel 100 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 SOP16 SSOP16 Parameter Rating 6.5 -4500 to 4500 -65 to 150 -40 to 85 150 260 210 210 Unit V V ℃ ℃ ℃ ℃ ℃/W REV 6 2 www.mosanalog.com MOSA OPERATING RATINGS Symbol VDD Supply Voltage Parameter MS6258 Gain And Attenuation Volume Controller IC Min 2.7 Typ - Max 6.5 Unit V 5V ELECTRICAL CHARACTERISTICS (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 CS PSRR MUTE Rin Rout Vo THD+N S/N VIH VIL Quiescent current Gain/Attenuation Gain/Attenuation step Gain/Attenuation step 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=4.5Vpp (THD+N)/S < 0.1% Vripple = -20dBV, 100Hz Vin=0dBV Max gain Max attenuation 95 18 95 0.3VDD 3.8 15 -79 1 0.3 105 53 85 20 50 4.8 -69 100 4.2 100 -64 0.7VDD mA dB dB dB dB dB dB dB kΩ Ω Vpp dB dB V V AC Characteristics Bus Characteristics REV 6 3 www.mosanalog.com MOSA 3.3V ELECTRICAL CHARACTERISTICS MS6258 Gain And Attenuation Volume Controller IC (VDD=3.3V, 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 Vripple = -20dBV, 100Hz Vin=-3dBV (THD+N)/S < 0.1% 90 85 3.7 100 52 80 3 -69 90 4.1 -64 mA dB dB dB Vpp dB dB AC 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 Vripple = -20dBV, 100Hz Vin=-3dBV (THD+N)/S < 0.3% 90 85 3.2 100 50 80 2 -69 90 3.6 -64 mA dB dB dB Vpp dB dB AC Characteristics REV 6 4 www.mosanalog.com MOSA TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, VREF Cap=10uF; unless otherwise specified) MS6258 Gain And Attenuation Volume Controller IC f=20Hz f=20Hz f=20Hz THD+N (%) THD+N (%) f=1kHz f=1kHz f=20kHz f=20kHz THD+N (%) f=1kHz f=20kHz 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 CHANNEL SEPARATION (dB) VDD=2.7V VO=-3dBV VDD=3.3V VO=-3dBV VDD=5V VO=0dBV VDD=5V VO=0dBV VDD=3.3V VO=-3dBV VDD=2.7V VO=-3dBV FREQUENCY (Hz) FREQUENCY (Hz) QUIESCENT CURRENT (mA) THD+N (%) 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 6 5 www.mosanalog.com MOSA I2C BUS DESCRIPTION Start and stop conditions MS6258 Gain And Attenuation Volume Controller IC 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 6 6 www.mosanalog.com MOSA Timing of SDA and SCL bus lines SDA tf SCL MS6258 Gain And Attenuation Volume Controller IC 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 6 7 www.mosanalog.com MOSA BUS INTERFACE MS6258 Gain And Attenuation Volume Controller IC Data are transmitted to and from the MCU to the MS6258 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 MS6258 Interface protocol The format consists of the following ‧A START condition ‧A chip address byte including the MS6258 address. (7bits) ‧The 8th bit of the byte must be “0”.(write=0, read=1) ‧MS6258 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 -R /W ACK DATA ACK DATA ACK P STOP CONDITION Protocol Address Pin1(A.O.) = Low or Open 1 0 0 0 1 0 0 0 W 1 Pin1(A.O.) = High 0 0 0 1 1 0 0 W 7 bits address MS6258 address 7 bits address MS6258 address REV 6 8 www.mosanalog.com MOSA Data bytes description Function bits MSB 1 1 1 1 1 0 0 1 0 0 1 1 1 0 0 0 0 1 1 1 1 0 1 1 1 1 1 0 1 0 1 1 0 0 1 0 1 0 0 1 1 A3 0 A3 0 A3 0 C3 C3 C3 0 0 1 0 0 0 0 0 0 0 1 1 1 1 1 1 A2 B2 A2 B2 A2 B2 C2 C2 C2 0 0 0 0 0 0 0 1 A1 B1 A1 B1 A1 B1 C1 C1 C1 0 0 1 1 0 0 0 LSB 1 A0 B0 A0 B0 A0 B0 C0 C0 C0 0 1 0 1 1 1 0 MS6258 Gain And Attenuation Volume Controller IC Function Function off (-79dB) 2-channel, -1dB/step 2-channel, -10dB/step Left channel, -1dB/step Left channel, -10dB/step Right channel, -1dB/step Right channel, -10dB/step 2-channel, +1dB/step Left channel, +1dB/step Right channel, +1dB/step Stereo1 Stereo2 Stereo3 Stereo4 Power off preparation (pop noise free) 2-channel, mute On 2-channel, mute Off Gain / Attenuation bits A3 C3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 A2 B2 C2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 A1 B1 C1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 A0 B0 C0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 Attenuation (dB) A 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 B 0 -10 -20 -30 -40 -50 -60 -70 Gain (dB) C 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 1 1 1 1 1. Attenuation bit, Ax = -1dB/step, Bx = -10dB/step 2. Gain bit, Cx = +1dB/step 3. Total gain / attenuation equal Ax + Bx + Cx. 4. The function of power off preparation is to prevent pop noise when power off. REV 6 9 www.mosanalog.com MOSA Example MSB Start 1 0 0 0 1 0 0 LSB 0 ACK 0 1 1 Data byte 1 1 0 0 0 MS6258 Gain And Attenuation Volume Controller IC Mute off The initial condition is –79dB and mute on when power on. The first command must disable the mute function. ACK Stop MS6258 address 2-ch, Mute off Set gain of 2 channel at 0dB, and selected stereo 1 input. Start MS6258 Address ACK 1 1 1 0 0 0 0 0 ACK 1 1 0 1 0 0 0 0 ACK 2-ch, -10dB/step, 0dB 1 1 0 0 0 0 0 0 ACK 0 1 0 0 0 0 0 0 ACK 2-ch, -1dB/step, 0dB Stop 2-ch, +1dB/step, 0dB Stereo 1 input Set gain of 2 channel at 6dB, and selected stereo 2 input. The value of attenuation must be set zero when the volume from attenuation to gain. Start MS6258 Address ACK 1 1 1 0 0 0 0 0 ACK 1 1 0 1 0 0 0 0 ACK 2-ch, -10dB/step, 0dB 1 1 0 0 0 1 1 0 ACK 0 1 0 0 0 0 0 1 ACK 2-ch, -1dB/step, 0dB Stop 2-ch, +1dB/step, 6dB Stereo 2 input Set gain of 2 channel at -3dB, and selected stereo 3 input. The value of gain must be set zero when the volume from gain to attenuation. Start MS6258 Address ACK 1 1 0 0 0 0 0 0 ACK 1 1 1 0 0 0 0 0 ACK 2-ch, +1dB/step, 0dB 1 1 0 1 0 0 1 1 ACK 0 1 0 0 0 0 1 0 ACK 2-ch, -10dB/step, 0dB Stop 2-ch, -1dB/step, -3dB Stereo 3 input Set attenuation of left channel at –33dB, and selected stereo 4 input. Start MS6258 Address ACK 1 0 1 1 0 0 1 1 ACK 1 0 1 0 0 0 1 1 ACK L-ch, -10dB/step, -30dB 0 1 0 0 0 0 1 1 ACK Stop L-ch, -1dB/step, -3dB Stereo 4 input REV 6 10 www.mosanalog.com MOSA An example of the volume control. (Volume = Ax + Bx + Cx) Set two channels at 0dB. (Ax + Bx + Cx = 0dB + 0dB + 0dB) MS6258 Gain And Attenuation Volume Controller IC next, the volume changes from 0dB to -9dB. (Ax + Bx + Cx = -9dB + 0dB + 0dB) next, the volume changes from -9dB to -19dB. (Ax + Bx + Cx = -9dB + -10dB + 0dB) next, the volume changes from -19dB to -20dB. (Ax + Bx + Cx = 0dB + -20dB + 0dB) Start MS6258 Address ACK 1 1 1 0 0 0 1 0 ACK 1 1 0 1 0 0 0 0 ACK Stop 2-ch, -10dB/step, -20dB 2-ch, -1dB/step, 0dB next, the volume changes from -20dB to -14dB. (Ax + Bx + Cx = 0dB + -20dB + 6dB) next, the volume changes from -14dB to +6dB. (Ax + Bx + Cx = 0dB + 0dB + 6dB) Note: We suggest the gain is set as the power is up. For example, set and fix the gain +10dB, the volume range will be controlled from +10dB to –69dB. REV 6 11 www.mosanalog.com MOSA APPLICATION INFORMATION Basic application example MS6258 8 SDA MCU 9 SCL VSS 7 A.O 1 10uF Stereo Signal 1 10uF 10uF Stereo Signal 2 10uF 10uF Stereo Signal 3 10uF 10uF Stereo Signal 4 10uF 5 L-IN1 12 R-IN1 4 L-IN2 13 R-IN2 3 L-IN3 14 R-IN3 2 L-IN4 15 R-IN4 L-OUT 6 16 10 MS6258 Gain And Attenuation Volume Controller IC VDD Supply 0.1uF 47uF Lo : Addr 10001000B Hi : Addr 10001100B VREF 10uF 10uF 10k 11 10uF 10k Power Amplifier R-OUT Basic application flowchart Procedure Of Power Up Procedure Of Power Down Power up VDD = 5V Volume Control for Attenuation 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 down VDD = 0V Setting Gain Set the max signal Volume Control for Attenuation volume up/down step by step 1. The initial condition is –79dB, gain 0dB and mute on when power on. 2. In order to prevent pop noise when power on, please wait 1 sec to transmit I2C command. REV 6 12 www.mosanalog.com MOSA EXTERNAL DIMENSIONS SOP16 D MS6258 Gain And Attenuation Volume Controller IC Detail A FH Symbol A A1 B C e D H E L h θ h x 45 C A Dimension in mm Dimension in inch Min Max Min Max 1.35 1.75 0.0532 0.0688 0.10 0.25 0.0040 0.0098 0.33 0.51 0.013 0.020 0.19 0.25 0.0075 0.0098 1.27 BSC 0.050 BSC 9.80 10.00 0.3859 0.3937 5.80 6.20 0.2284 0.2440 3.80 4.00 0.1497 0.1574 0.40 1.27 0.016 0.050 0.25 0.50 0.0099 0.0196 o o o 8 0 8o 0 e B A1 0.25mm θ Detail A L SSOP16 D Detail A Symbol A A1 A2 b c e D E E1 L h L1 ZD R1 R θ θ1 θ2 E1 E H x 45 c ZD A2 A θ2 e b A1 θ1 R1 L1 R θ Detail A L 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 4.80 5.00 0.189 0.197 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 0.229 REF 0.009 REF 0.20 0.33 0.008 0.013 0.20 0.008 o o o 8 0 8o 0 0o 0o 15o 5o 15o 5o REV 6 13 www.mosanalog.com MOSA TAPE AND REEL (Unit : mm) SOP16 MS6258 Gain And Attenuation Volume Controller IC 2.00 1.0 4.00 1.50 MIN 1.5 +0.1/-0.0 0.30 0.5 A R 0.3 MAX 1.75 1.0 7.5 10.30 0.1 16.0 0.3 2.10 6.50 SECTION A - A 8.00 R 0.5 TYP A SSOP16 2.0 0.30 0.05 4.0 1.75 0.3R MAX 5.5 0.05 12.0 0.3 5.4 0.05 1.5+0.1/-0.0 DIA 3.0 3.6 6.9 8.0 1.5 MIN 0.5 Radius Typical 2.0 1.7 REV 6 14 www.mosanalog.com MOSA DEMO BOARD MS6258 Gain And Attenuation Volume Controller IC 1 1 2 3 6 5 4 Function description Label 1: Supply Voltage The AVDD and DVDD should be the same supply voltage, the supply range is 2.7~6.5 VDC. Label 2: LED Indicator The LEDs indicate the chip status and IR received status. It keeps on a light state when the MS6257 is active. The other hand, keeps on a dark state when the MS6257 is power-off. It is red-dark blink once when the MCU has received the function code correctly. Label 3: Reset All I/O pins are reset to default values. Volume 0dB and Mute on. Label 4: Input section Please input stereo audio signal, as music or sine wave. Label 5: I2C Address option As the jump is closed, the address code is 88H. As the jump is open, the address code is 8CH. Label 6: Output section Please connected to a post-power-amplifier, as stereo speaker. REV 6 15 www.mosanalog.com MOSA IR Controller MS6258 Gain And Attenuation Volume Controller IC 2-CH+ : The volume-up switch for stereo channel The volume increase by +1dB as the switch is pressed once, the maximum value is up to +15dB. The default value is 0dB on initial status. L-channel and R-channel are active synchronic. 2-CH- : The volume-down switch for stereo channel The volume decrease by -1dB as the switch is pressed once, the minimum value is up to -79dB. L-channel and R-channel are active synchronic. LCH+ : The volume-up switch for left channel The volume increase by +1dB as the switch is pressed once, the maximum value is up to +15dB. LCH- : The volume-down switch for left channel The volume decrease by -1dB as the switch is pressed once, the minimum value is up to -79dB. RCH+ : The volume-up switch for right channel The volume increase by +1dB as the switch is pressed once, the maximum value is up to +15dB. RCH- : The volume-down switch for right channel The volume decrease by -1dB as the switch is pressed once, the minimum value is up to -79dB. MUTE : Press the switch once to enter mute-on or mute-off. The default status is mute-off on initial status. IN1~IN4 : Stereo channel selection There are four sets, stereo 1 to 4. The default channel is stereo 1 on initial status. REV 6 16 www.mosanalog.com MOSA Circuit J1 1 2 J3 1 2 3 LCD DVCC RX TX DVCC + C13 0.1u + C14 10u R4 C4 20P J4 AVDD C5 2 1 20P AVDD J7 + C7 0.1u + C6 10u 1 3 5 7 9 2 4 6 8 10 C15 10u + + Y1 12M + 10K S1 RST 1 RX 2 3 TX 4 5 IR_IN 6 7 SCL 8 SDA 9 10 + C2 10u U1 RST P3.0 P3.1 XTAL2 XTAL1 P3.2 P3.3 P3.4 P3.5 GND AT89CX51 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 R3 1K MS6258 Gain And Attenuation Volume Controller IC R1 220 R2 10K C1 47u + 3 2 IR_IN + C3 J9 D1 LED A.O. 470p 1 J2 VS GND IR IR INPUT J10 IN4 J11 C16 10u C17 10u + + C18 10u C19 10u + + U3 1 2 3 4 5 6 7 SDA 8 A.O. L-IN4 L-IN3 L-IN2 L-IN1 L-OUT VSS SDA MS6258 CAP R-IN4 R-IN3 R-IN2 R-IN1 R-OUT VDD SCL 16 15 14 13 12 11 10 AVDD 9 SCL 2 1 J8 OUTPUT IN3 J12 + 1 2 3 10u 10u + C8 C10 J5 OUTPUT R5 R6 10K 10K + C12 10u IN2 J6 C20 C9 10u 10u 10u + + + IN1 C11 R9 R10R11R12R13R14R7 R8 10K K K 10K 10K 10 10 10K 10K 10K W1 Jumper REV 6 17 www.mosanalog.com