UNISONIC TECHNOLOGIES CO., LTD U7313 CMOS IC AUDIO PROCESSOR IC DESCRIPTION The U7313 is a 3-stereo inputs and 4-speaker outputs digital audio processor which incorporates volume, tone(bass and treble) , balance(left/right)and fader(front/rear) into a single chip. Selectable input gain and loudness function are provided to build a highly effective electronic audio processor having the highest performance and reliability with the external components. The AC signal setting is obtained by resistor networks and switches which are set by programming serial input signal via I2C bus. In addition, BiCOMS processes are utilized for low distortion, low noise and low DC stepping. The U7313 is designed for quality audio applications in car radio and Hi-Fi systems. FEATURES * Support I2C bus interface * 3 stereo inputs and selectable input gain * Volume control in 1.25dB/step * Loudness function * Bass and treble control * 4 independent speakers control * Independent mute function * Low distortion * Low noise and DC stepping ORDERING INFORMATION Ordering Number Lead Free Halogen Free U7313L-D28-T U7313G-D28-T U7313L-S28-R U7313G-S28-R U7313L-S28-T U7313G-S28-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing DIP-28 SOP-28 SOP-28 Tube Tape Reel Tube 1 of 14 QW-R502-173.B U7313 CMOS IC PIN CONFIGURATION CREF 1 28 SCL VDD 2 27 SDA GND 3 26 DIGGND L 4 25 OUTLF R 5 24 OUTRF INR 6 23 OUTLR OUTR 7 22 OUTRR LOUDR 8 21 BOUTR R3 9 20 BINR R2 10 19 BOUTL R1 11 18 BINL LOUDL 12 17 OUTL L3 13 16 INL L2 14 15 L1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 14 QW-R502-173.B U7313 CMOS IC PIN DESCRIPTIONS PIN NO. PIN NAME I/O 1 CREF 2 3 VDD GND 4 L I 5 R I 6 7 INR OUTR I O 8 LOUDR I 9 10 11 R3 R2 R1 I I I 12 LOUDL I 13 14 15 16 17 L3 L2 L1 INL OUTL I I I I O 18 BINL I 19 BOUTL I 20 BINR I 21 BOUTR I 22 23 24 25 26 27 28 OUTRR OUTLR OUTRF OUTLF DIG GND SDA SCL O O O O I/O I PIN DESCRIPTION Internal reference voltage, typical value is vdd/2, connect a capacitor to gnd to depress ripple voltage. Supply voltage. Analog gnd. Connect a capacitor to gnd, the center frequency and quality of the response behavior of treble module can be chosen by the capacitor. (Left speaker) Connect a capacitor to gnd, the center frequency and quality of the response behavior of treble module can be chosen by the capacitor. (Right speaker) Input of volume module.(Right speaker) Output of gain module.(Right speaker) Connect a capacitor to gnd, change the capacitor can adjust the amplitude-frequency characteristic of loudness.(Right speaker) Channel 3 input.(Right speaker) Channel 2 input.(Right speaker) Channel 1 input.(Right speaker) Connect a capacitor to gnd, change the capacitor can adjust the frequency-amplitude characteristic of loudness.(Left speaker) Channel 3 input.(Left speaker) Channel 2 input.(Left speaker) Channel 1 input.(Left speaker) Input of volume module.(Left speaker) Output of gain module.(Left speaker) See the application circuit, change the capacitor and the resistor can adjust the center frequency and quality of the response behavior of bass module.(Left speaker) See the application circuit, change the capacitor and the resistor can adjust the center frequency and quality of the response behavior of bass module. (Left speaker) See the application circuit, change the capacitor and the resistor can adjust the center frequency and quality of the response behavior of bass module. (Right speaker) See the application circuit, change the capacitor and the resistor can adjust the center frequency and quality of the response behavior of bass module. (Right speaker) Output of the right rear speaker. Output of left rear speaker. Output of right front speaker. Output of left front speaker. Digital gnd of serial I2C bus. Data signal of serial I2C bus. Clock signal of serial I2C bus. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 14 QW-R502-173.B U7313 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw SPEAKER ATTENUATOR SPEAKER ATTENUATOR INPUT SELECTOR & GAIN BLOCK DIAGRAM MCU RIGHT INPUT LEFT INPUT CMOS IC 4 of 14 QW-R502-173.B U7313 CMOS IC ABSOLUTE MAXIMUM RATINGS (Ta=25ºC, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT DC Supply Voltage VDD -0.5~10.2 V Max Input Clock Speed of Serial I2C Bus Signal BCLK 100 KBit/s Operating Ambient Temperature TOPR -40~+85 ℃ Storage Temperature TSTG -55~ +150 ℃ Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied OVERALL CHARACTERSTICS PARAMETER DC Supply Voltage Supply Current Ripple Rejection Signal to Noise Ratio Total Harmonic Distortion Channel Separation Input Gain Per Step Volume Control Per Step Bass Control Per Step Treble Control Per Step Speaker Control Per Step Total Tracking Error SYMBOL VDD IS |RR| S/N THD S(channel) Au(gain) Au(volume) Au(bass) Au(treble) Au(speaker) Au(error) TEST CONDITIONS VDD=9V VS=9V, RL=10KΩ,RG=600Ω All gains=0dB; VOUT=1Vrms V=1Vrms f=1KHZ f=1KHZ f =100HZ f =20KHZ Au=0 to -20dB -20 to -60dB MIN 6 60 TYP 9 8 80 106 0.01 103 3.75 1.25 2 2 1.25 0 0 MAX 10 11 0.1 UNIT V mA dB dB % dB dB/step dB/step dB/step dB/step dB/step 1 2 dB MAX UNIT 10 11 V mA 70 KΩ Vrms dB KΩ dB dB dB dB uV mV mV MODULE CHARACTERISTICS (Ta=25ºC, VDD =9V, RL=10KΩ, (gain and all control 0dB), f=1KHZ unless otherwise specified) PARAMETER SYMBOL TEST CONDITION MIN TYP DC SUPPLY DC Supply Voltage VDD 6 9 Supply Current IS 8 GAIN & INPUT SELECTOR Input Resistance RI G Input1,2,3 35 50 Clipping Level VCL 2 2.5 Input Separation(input 1,2,3) SIN 80 100 Output Load resistance RL OUTL OUTR 2 Gain Range GIN 11.25 Min. Gain GINmin -1 0 Max. Gain GINmax 11.25 Adjacent Gain Steps GSTEP 3.75 Input Noise eIN G=11.25dB 2 adjacent gain steps 4 DC Shift Voltage Steps VDC G=18.75 to Av max 4 VOLUME CONTROL Input Resistance RI V Pin6,16 20 33 Control Range Gv 70 75 Min. Attenuation AuMIN -1 0 Max. Attenuation AuMAX 70 75 Adjacent Attenuation Steps AuSTEP 0.5 1.25 Au=0 to -20dB -1.25 0 Attenuation Set Error EA Au=-20 to -60dB -3 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 1 20 50 80 1 80 1.75 1.25 2 KΩ dB dB dB dB dB dB 5 of 14 QW-R502-173.B U7313 CMOS IC MODULE CHARACTERISTICS(Cont.) PARAMETER Tracking Error SYMBOL ET DC Shift Voltage Steps VDC BASS CONTROL Control Range Adjacent Attenuation Steps Internal Feedback Resistance TREBLE CONTROL Control Range Adjacent Attenuation Steps SPEAKER ATTENUATORS Control Range Adjacent Attenuation Steps Attenuation Set Error Output Mute Attenuation TEST CONDITION Adjacent attenuation steps from 0dB to Au max ±14 2 44 ±16 3 58 dB dB KΩ Gt TSTEP Center freq=20KHZ ±13 1 ±14 2 ±15 3 dB dB 35 0.5 37.5 1.25 40 1.75 1.5 80 100 0 1 3 10 dB dB dB dB mV mV OUTPUTS Clipping Level Output Load Resistance Output Load Capacitance Output Resistance Output DC Voltage EFFECT OF AUDIO PROCESSING VOCL RL CL ROUT VOUT eN(OUT) S/N d Channel Separation( left/right) adjacent attenuation steps from 0 to mute d=0.3% Au(error) 2 2 2.5 30 4.2 75 4.5 10 120 4.8 Vrms KΩ nF Ω V 2.5 5 15 μV μV BW=20-20kHZ, flat output muted all gains=0dB BW=20-20kHZ , a curve all gains=0dB all gains=0dB; VOUT=1Vrms Au=0,VIN=1Vrms VIN=1Vrms Au=-20dB VIN=0.3Vrms S(channel) Total Tracking Error UNIT dB mV mV ±12 1 34 VDC Distortion 0 0.5 MAX 2 3 7.5 Center freq=100HZ DC Shift Voltage Steps Signal to Noise Ratio TYP Gb BSTEP RB GS SSTEP EA AuMUTE Output Noise MIN 80 Au=0 to -20dB Au=-20dB to -60dB 3 μV 106 0.01 0.09 0.04 103 0 0 dB % % % dB dB dB 0.1 1 2 I2C BUS INPUT Input Voltage Low High Input Current Output Voltage SDA Acknowledge VIL VIH IIN VOUT 1 3 -5 IOUT=1.6mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw +5 0.4 V V μA V 6 of 14 QW-R502-173.B U7313 CMOS IC APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 14 QW-R502-173.B U7313 CMOS IC I2C BUS INTERFACE The master communicated with U7313 by two lines SDA and SCL which should connect pull-up resistors to positive supply voltage. See the figure below. BYTE FORMAT The byte transferred from SDA line should contain 8 bit binary data, and followed an acknowledge bit. The MSB is transferred first, Maximum clock speed is 100Kbit/s.Detail see the figures below. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 14 QW-R502-173.B U7313 CMOS IC ACKNOWLEDGE The master puts a resistive high level on the SDA line during the acknowledge clock pulse. The slave which acknowledge pull down the SDA line during the acknowledge clock pulse. The SDA line keep in a stable low state. The slave which has been addressed has to generate an acknowledge after receiving each byte. If the SDA line still at the high level during the ninth clock pulse time, the master can generate the stop information to abort the transfer. If want to abort the acknowledge information, the master can stop detecting the acknowledge by waits one clock without checking, then sends the new data. This approach of course is less protected from misoperation and decrease the noise immunity. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 14 QW-R502-173.B U7313 CMOS IC FUNCTION CONTROL Chip address MSB LSB 1 0 0 0 1 0 0 0 Quick reference MSB LSB FUNCTION 0 0 B2 B1 B0 A2 A1 A0 Volume Control 1 0 0 B1 B0 A2 A1 A0 Speaker LF 1 0 1 B1 B0 A2 A1 A0 Speaker RF 1 1 0 B1 B0 A2 A1 A0 Speaker LR 1 1 1 B1 B0 A2 A1 A0 Speaker RR 0 1 0 G1 G0 S2 S1 S0 Gain & Input Selector 0 1 1 0 C3 C2 C1 C0 Bass Control 0 1 1 1 C3 C2 C1 C0 Treble Control G0 S2 Gain & input selector MSB 0 1 0 G1 S1 0 0 1 1 LSB S0 0 1 0 1 0 1 0 0 1 1 For example: Input: stereo 3 Gain:+3.75dB The 8 bit string is: 0 1 0 1 0 0 1 0 0 1 0 1 Loudness on UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw FUNCTION Audio Switch Stereo 1 Stereo 2 Stereo 3 Stereo4(nonuse) LOUDNESS ON LOUDNESS OFF +11.25dB +7.5dB +3.75dB 0dB 10 of 14 QW-R502-173.B U7313 CMOS IC FUNCTION CONTROL(Cont.) Volume control MSB 0 0 B2 0 0 For example: Bass control 0 1 1 0 For example: B1 B0 B2 B1 B0 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 Volume -32.5dB the 8 bit string is: C3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 C2 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 C1 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 FUNCTION(dB) LSB A1 A0 0 0 0 1 1 0 1 1 0 0 0 1 1 0 1 1 A1 A0 A2 0 0 0 0 1 1 1 1 A2 C0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 -1.25 -2.5 -3.75 -5 -6.25 -7.5 -8.75 0 -10 -20 -30 -40 -50 -60 -70 00011010 FUNCTION(dB) -14 -12 -10 -8 -6 -4 -2 0 0 2 4 6 8 10 12 14 Bass control -4dB the 8 bit string is: 0 1 1 0 0 1 0 1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 11 of 14 QW-R502-173.B U7313 CMOS IC FUNCTION CONTROL(Cont.) Treble control 0 1 1 1 For example: C3 C2 C1 C0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 1 1 0 1 0 1 0 0 1 1 0 0 0 Treble control -4dB the 8 bit string is: Speaker attenuators MSB B1 1 0 0 B1 1 0 1 B1 1 1 0 B1 1 1 1 B0 B0 B0 B0 A2 A2 A2 A2 0 0 0 0 1 1 1 1 0 0 0 1 1 0 1 1 1 1 1 For example: Output SPEAKER RF The 8 bit string is: 1 0 1 0 1 1 0 0 LSB A1 A1 A1 A1 0 0 1 1 0 0 1 1 A0 A0 A0 A0 0 1 0 1 0 1 0 1 1 1 -15dB UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw FUNCTION (dB) -14 -12 -10 -8 -6 -4 -2 0 0 2 4 6 8 10 12 14 01110101 FUNCTION (dB) SPEAKER LF SPEAKER RF SPEAKER LR SPEAKER RR 0 -1.25 -2.5 -3.75 -5 -6.25 -7.5 -8.75 0 -10 -20 -30 Mute 12 of 14 QW-R502-173.B U7313 CMOS IC TYPICAL CHARACTERISTICS Figure 1: Volume+Loudness attenuation vs. Frequency vs. Volume control (C10,C11=100nF) Figure 2: Volume+Loudness attenuation vs. Frequency vs. External Capacitor (Volume=-40dB) Figure 3: Tone response(bass and treble control vs. amplitude-frequency response) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 13 of 14 QW-R502-173.B U7313 CMOS IC UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 14 of 14 QW-R502-173.B