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| CXA2021S I2C BUS Sound Processor for TV Description The CXA2021S is a bipolar IC developed as an I2C BUS control sound processor for TV. This IC implements surround, tone control, balance, volume, mute and AGC functions. Features * I2C BUS control * The AGC circuit is adopted to absorb volume differences between input sources and improve the S/N ratio in hearing. Absolute Maximum Ratings * Supply voltage VCC 14 V * Operating temperature Topr -20 to +75 C * Storage temperature Tstg -65 to +150 C * Allowable power dissipation PD 0.9 W Recommended Operating Condition Supply voltage 8 to 13 22 pin SDIP (Plastic) Structure Bipolar silicon monolithic IC Applications TVs V Pin Configuration LOUT CH-L DET1 CL-L HPO SDA 12 11 VRS L-IN Vcc HPI PS 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 CL-R BAL VOL ROUT GND BASS CH-R TRE DET2 Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. R-IN -1- SCL E95319-ST CXA2021S Block Diagram I2C BUS SOUND PROCESSOR Surround Vcc L = L - (L - R) x 1 - SCR 1 + SCR 1 - SCR 1 + SCR R = 18K 150Hz HPF DET1 16 17 13 DET2 10 21 CH-L CL-L R = R + (L - R) x 19 20 AGC DET 1 AGC DET 2 L-IN 22 TONE VCA LOUT 14 BASS PS TRE VOL BAL 1 R-IN TONE VCA ROUT 9 Vcc/2 DAC BUS DEC 18 VRS 2 15 4 3 7 6 5 8 12 11 SDA SCL PS CH-R CL-R GND BASS TRE BAL VOL -2- CXA2021S Pin Description Pin No. Symbol Voltage Equivalent circuit Vcc 10 10k (Ta = 25C, VCC = 12V) Description 1 22 R-IN L-IN 6V 1 22 130 30k Vcc 2 Input pins. 2 GND 0V Vcc 250 250 GND pin. 3 20 CL-R CL-L 6V 11k 3 20 130 5.4k 11k Pins for connecting external LPF capacitance (BASS). Vcc 2 Vcc 250 250 4 19 CH-R CH-L 6V 5.7k 4 19 130 6k 5.7k Pins for connecting external HPF capacitance (TREBLE). Vcc 40k 20k 5 6 7 8 BAL TRE BASS VOL 2k 4.5V 5 6 7 8 2k 7.5V DAC output pins. Connect LPF capacitance of DAC. Internal impedance is approximately 20k. 75 -3- CXA2021S Pin No. Symbol Voltage Equivalent circuit Vcc Description 14 500 9 14 ROUT LOUT 6V 9 130 84k 500 5P Output pins. Vcc 200 200 10k 10 DET2 10 130 AGC detector output and control pin. 100k 100k Vcc 100 50 11 SCL 11 4k I2C bus clock line. 11k 3k 56k Vcc 100 50 12 SDA 12 4k I2C bus data line. 4.5k 3k 56k -4- CXA2021S Pin No. Symbol Voltage Equivalent circuit Vcc 40k 13 Description 13 DET1 7.8V AGC detector output. Connect capacitance for setting time constant. 2k Vcc 10 18k 130 15 PS 6V 15 18k Pin for connecting external capacitance of the surround phase shifter. Internal impedance is approximately 18k. Vcc 10k 500 16 HPO 6V 16 500 AGC HPF output pin. Vcc 10 5k 17 HPI 6V 17 130 AGC HPF input pin. Vcc 2 16k 16k -5- CXA2021S Pin No. Symbol Voltage Equivalent circuit Vcc 16k 16k Description 30k 18 VRS 6V 18 1k VCC reference voltage pin. 2 30k 30 21 VCC 12V Power supply pin. -6- CXA2021S Control Register Table DATA bit 7 bit 6 bit 5 bit 4 SLAVE ADDRESS = 82H (Power-ON setting value) bit 2 bit 1 bit 0 AGC: 0 = OFF , 1 = ON MUTE: 0 = OFF , 1 = ON bit 3 VOLUME (00) BASS (00) TREBLE (00) BALANCE (00) MUTE AGC (0) (0) MODE (0) -7- R-IN L-IN R1 C2 R2 10k 1 22 C1 R-IN L-IN 4.7 4.7 10k 21 2 GND Vcc C3 C4 20 3 CL-R CL-L 0.1 C6 19 0.1 C5 4 CH-R CH-L 4700P C7 18 5 4700P C8 BAL VRS 47 Electrical Characteristics Measurement Circuit 4.7 C9 6 -8- TRE CXA2021S 17 HPI 4.7 C11 C10 0.1 16 7 BASS HPO 4.7 C12 15 8 C13 VOL PS 10 C14 14 9 S1 PS TP-PS 4.7 R3 10k ROUT ON C15 ROUT 10 LOUT 10 R4 10k LOUT C16 10 C17 DET2 R5 10 1MEG R6 11 12 SCL 13 DET1 4.7 R7 SCL 220 SDA 220 CXA2021S SDA CXA2021S Application Circuit L-IN LOUT SDA 4700P 4.7 0.1 C13 0.1 C15 47 10 4.7 C2 C17 C10 0.1 22 21 20 19 18 17 16 15 14 13 12 CH-L DET1 CL-L VRS HPO HPI L-IN PS CXA2021S ROUT BASS LOUT GND TRE VOL DET2 R-IN CH-R CL-R 1 2 3 4 5 6 7 8 9 10 11 4700P 4.7 0.1 4.7 4.7 4.7 4.7 C14 C9 C11 C12 C16 10 10 C1 C3 C5 C7 SCL 1MEG R1 SCL BAL SDA 220 R2 R-IN Vcc ROUT Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. -9- 220 C4 C8 C6 R3 Electrical Characteristics Input conditions AGC BASS BAL 20 16 31 50 10 10 0 MODE TRE 0 Input point Remarks Min. Typ. Max. Input signal SW set to ON Measure -ment point Unit (Ta = 25C, VCC = 12V) No. Measurement item Symbol VOL MUTE 1 Current consumption L-IN R-IN REF: INPUT -2.0 -17 1kHz 2.4Vrms LOUT ROUT 0 ICC 3F 0 mA 2 FLAT L, R VF L, R 2.0 dB 3 REF, Level L, R VR L, R 20 -14 -11 dB 4 VOL MIN L, R 100Hz 2.4Vrms 10kHz 2.4Vrms 1F 1F 100Hz 2.4Vrms 10kHz 2.4Vrms 0 0 100Hz 2.4Vrms 10kHz 2.4Vrms 10 10 3F 1kHz 2.4Vrms LOUT REF: VR L, R VMIN L, R 0 -- -- -70 dB 5 FLAT frequency response 100Hz VLF L, R 20 -1.5 0 1.5 dB 6 FLAT frequency response 10kHz VHF L, R -1.5 0 1.5 dB - 10 - 0 3F 7 BASS BOOST 100Hz VBST LF 8.5 11 13.5 dB 8 TREBLE BOOST VBST HF 10kHz 8.5 11 13.5 dB 9 BASS CUT 100Hz VCUT LF -13.5 -11 -8.5 dB 10 TREBLE CUT 10kHz VCUT HF -13.5 -11 -8.5 dB 11 BALANCE BOOST L VBAL BST L 0 1.2 2.0 dB 12 BALANCE CUT L VBAL CUT L -- -- -30 dB 13 BALANCE BOOST R VBAL BST R ROUT 0 1.2 2.0 dB CXA2021S 14 BALANCE CUT R VBAL CUT R -- -- -30 dB Input conditions AGC TRE 10 20 L-IN R-IN -- -- 2.0 REF:INPUT -- -- -70 1kHz 2.4Vrms LOUT ROUT 0 10 0 BASS MODE BAL Input point Input signal Remarks Min. Typ. Max. Unit SW set to ON Measure -ment point % No. Measurement item Symbol VOL MUTE 15 Distortion L, R Vdist 3F 0 16 Mute L, R VMT L, R 1 dB 17 L-IN ROUT REF: VFR Cross-Talk L R VCT L, R -- 0 -- -70 dB 18 R-IN LOUT Cross-Talk R L VCT R, L REF: VFL -- -- -70 dB 19 NOISE LEVEL L, R LOUT ROUT L-IN R-IN 1kHz 50mVrms 1kHz 160mVrms 1kHz 2Vrms 1 L-IN 1kHz 2.5Vrms S1 TP-PS 1kHz 10mVrms VNOI L, R 30kHz LPF -- -- -60 dBm 20 AGC BOOST L, R VGCB L, R REF: AGC-OFF (0) REF: AGC-OFF (0) REF: AGC-OFF (0) REF: AGC-OFF (0) 0 2.5 5 dB 21 AGC BOOST2 L, R VGCB2 L, R 5 7 10 dB - 11 - 0 R-IN PS 1kHz 1.25Vrms 10 0 0 22 AGC NULL L, R VGCN L, R -2.5 -0.5 2 dB 23 AGC CUT L, R VGCC L, R 0 1 0 1 0 1 0 1 -24 -20 -16 dB 24 SS DIF GAIN L SDG L -2 0 2 dB 25 SS DIF GAIN R SDG R -2 0 2 dB 26 SS MIX LEVEL L SMX L LOUT 3 6 9 dB 27 SS MIX LEVEL R SMX R ROUT 3 6 9 dB 28 DC OFF-Set 1 DO1 LOUT ROUT -1 0 1 V CXA2021S Input conditions AGC TRE 10 20 LOUT ROUT -1 0 1 -1 0 1 0 10 1F 0 10 BASS MODE BAL Input point Remarks Min. Typ. Max. Unit Input signal SW set to ON Measure -ment point V No. Measurement item Symbol VOL MUTE 29 DC OFF-Set 2 DO2 3F 0 30 DC OFF-Set 3 DO3 V 31 DC OFF-Set 4 DO4 -1 10 0 10 1F 0 0 1 10 REF: MODE 0 0 30kHz LPF -150 0 1 V 32 DC OFF-Set OFF SS DOSS L, R 150 mV 33 VOL MIN NOISE L, R VMINNO L, R 0 -- -92 -85 dBm - 12 - CXA2021S CXA2021S where R is internal resistance 18k and C is external capacitance. * TONE circuit BASS and TREBLE tone control. BASS control characteristic can be determined by external capacitance connected to CL, and TREBLE control characteristic by external capacitance connected to CH. Tone control can be performed in 32 steps. * BALANCE and VOLUME circuits Controls BALANCE and VOLUME in 64 steps each. * DAC DAC circuit for controlling BASS, TREBLE, VOLUME and BALANCE. Internal impedance is approximately 20k. Connect external capacitance for LPF. - 13 - CXA2021S TONE characteristic 20 BASS-TREBLE MAX. OUT L, R [dB] 10 0 BASS-TREBLE MIN. -10 -20 100 Frequency [Hz] 1k 10k CH. vs. TREBLE-CONTROL (MAX) 17.5 15.0 12.5 10.0 0.047 OUT L, R [dB] 0.022 7.5 4700p 5.0 2.5 2200p 470p 0.0 -2.5 10 100 Frequency [Hz] 1k 10k 100k CL. vs. BASS-CONTROL (MAX) 17.5 15.0 12.5 OUT L, R [dB] 10.0 7.5 1 5.0 0.1 0.047 0.01 0.47 2.5 0.0 -2.5 10 100 Frequency [Hz] 1k 10k 100k - 14 - CXA2021S VOL CONTROL characteristic 0 -10 -20 0 -10 BALANCE CONTROL characteristic OUT R OUT L OUT L, R [dB] -30 -40 -50 -60 -70 -80 10 20 30 3F OUT L, R [dB] -20 -30 -40 -50 -60 -70 -80 0 10 20 30 3F BUS Data [VOL] BUS Data [BALANCE] BASS CONTROL characteristic 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 0 4 8 C 10 14 18 1C 1F BUS Data [BASS] Input = 100Hz 12 10 8 6 4 TREBLE CONTROL characteristic Input = 10kHz OUT L, R [dB] OUT L, R [dB] 2 0 -2 -4 -6 -8 -10 -12 0 4 8 C 10 14 18 1C 1F BUS Data [TREBLE] AGC characteristic 1V AGC = OFF AGC = ON 100mV OUT [rms] 10 10 100mV IN [rms] 1V - 15 - CXA2021S Package Outline Unit: mm 22PIN SDIP (PLASTIC) + 0.1 0.05 0.25 - + 0.4 19.2 - 0.1 22 12 + 0.3 6.4 - 0.1 1 1.778 11 0.5 0.1 + 0.15 0.9 - 0.1 + 0.15 3.25 - 0.2 0.51 MIN + 0.4 3.9 - 0.1 PACKAGE STRUCTURE MOLDING COMPOUND SONY CODE EIAJ CODE JEDEC CODE SDIP-22P-01 SDIP022-P-0300 LEAD TREATMENT LEAD MATERIAL PACKAGE WEIGHT EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.95g - 16 - 7.62 0 to 15 |
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