ICs for Audio Common Use AN7396K Sound signal processing with built-in Spatializer IC ■ Overview 30 1.778 26.7±0.3 0.9±0.25 1 0.5±0.1 Unit: mm Spatializer Audio Processor is a signal processing technology, monopolized by Desper Products, Inc., that was developed for commercial electronics and multimedia markets, and is based on Desper's “PRO Spatializer” that is a 3-D audio production system for business use. The AN7396K utilizes the innovative technology adopted in that system. It provides sound enhancement effect and sound expansion with the conventional 2-speaker stereo system. Moreover, the AN7396K is a sound processing IC which incorporates the I2C Bus-controllable mute, sound AGC, bass reinforcement, tone (bass and treble), balance, and volume circuits. 15 16 1.0±0.25 8.6±0.3 4.7±0.25 3.3±0.25 10.16±0.25 ■ Features +0.1 0.35–0.05 3° to 15° • Provides deep 3-D sound with conventional 2-speaker system. • Performs optimal processing to the sound source recorded with surround-effect so as not to give double effects. • Provides the functions of muting, AGC, bass reinforcement, tone, balance, and volume control. • Supports I2C Bus controls. SDIP030-P-0400 Note) The package of this product will be changed to lead-free type (SDIP030-P-0400B). See the new package dimensions section later of this datasheet. ■ Applications • Televisions, videos, audio equipment, and game machines 16 SCL SDA 17 R-out 18 T.D. 19 BL.D. 20 21 R.T. R.B. 22 BB R-in VREF 23 24 25 VCC 26 F-out 27 F-in 28 29 30 VCA Space ■ Block Diagram Bass reinforcement 15 L-out 14 V.D. B.D. 12 L.B. 11 L.T. 10 GND 9 Mode 8 Note) Spatializer and the device trademark of circle-in-square 13 Balance control/ Mute Volume control 2.2 kΩ TIM1 TIM2 7 6 Tone control L-in 5 AGC 4 BR 3 BL 2 Spatializer L-ret. R-ret. 1 AGC are owned by Desper Products Inc. This product can be used with the consent of the Desper Products Inc. Under the terms of the agreement between Matsushita Electric and Desper Products Inc., no technical information on the Spatializer, which is applied to this product, shall be provided. Publication date: November 2001 SDC00026BEB 1 AN7396K ■ Pin Descriptions Pin No. Description 1 Pin No. R-ret. Description 16 I2C communication clock communication data 2 L-ret. 17 I2C 3 BL out 18 R-ch. output 4 BR out 19 Treble DAC output 5 AGC 20 Balance DAC output 6 L-ch. input 21 R-ch. treble FC set 7 TIM2 22 R-ch. bass FC set 8 TIM1 23 Bass MIX FC adjustment 9 Mode DAC output 24 1/2 VCC 10 GND 25 R-ch. input 11 L-ch. treble FC set 26 Power supply 12 L-ch. bass FC set 27 F-out 13 Bass DAC output 28 F-in 14 Volume DAC output 29 Space 15 L-ch. output 30 VCA ■ Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage VCC 11.0 V Supply current ICC 90 mA PD 990 mW Topr −25 to +75 °C Tstg −55 to +150 °C Power dissipation Operating ambient temperature Storage temperature * * Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. ■ Recommended Operating Range Parameter Supply voltage 2 Symbol Range Unit VCC 6.0 to 10.0 V SDC00026BEB AN7396K ■ Electrical Characteristics at VCC = 9 V, Ta = 25°C ± 2°C Parameter Volume max. level Volume 1/2 level Symbol *1 *1 Conditions VVmax VIN = 1 V[rms], f = 1 kHz VV1/2 VIN = 1 V[rms], f = 1 kHz Min Typ Max Unit −1 0 1 dB −14.5 −12.5 −10.5 dB VVmin VIN = 1 V[rms], f = 1 kHz −100 −90 dB Balance max. level *1 VBmax VIN = 1 V[rms], f = 1 kHz −1 0 1 dB Balance min. level *1 VBmin VIN = 1 V[rms], f = 1 kHz −82 −80 dB 10 12.5 15 dB −8.5 dB 15 dB −8.5 dB Volume min. level *1 Bus bootstrap level VBB VIN = 400 mV[rms], f = 50 Hz Bus cut level VBC VIN = 400 mV[rms], f = 50 Hz Treble bootstrap level VTB VIN = 400 mV[rms], f = 20 kHz Treble cut level VTC VIN = 400 mV[rms], f = 20 kHz ICCT VIN = 0 mV 45 65 90 mA VIN = 1 V[rms], f = 1 kHz 0.1 0.3 % THD = 1%, f = 1 kHz 2.0 2.2 V[rms] VMUTE VIN = 1 V[rms], f = 1 kHz −100 −90 dB Circuit current *1 Total harmonic distortion max. *1 Maximum input voltage Muting level *1 THDmax VImax *1 −13.5 −11.0 10 12.5 −13.5 −11.0 Noise level at volume max. *2 VNmax VIN = 0 mV, RG = 4.7 kΩ 82 120 µV[rms] Noise level at volume min. *2 VNmin VIN = 0 mV, RG = 4.7 kΩ 4 10 µV[rms] Bass reinforcement max. level VXBmax VIN = 400 mV[rms], f = 50 Hz 7 9 11 dB Bass reinforcement min. level VXBmin VIN = 400 mV[rms], f = 50 Hz 2 4 6 dB VSU1 VIN = 50 mV[rms], f = 1 kHz 415 600 750 mV[rms] VSN VIN = 0 mV, RG = 4.7 kΩ 110 150 µV[rms] VIN = 50 mV[rms], f = 1 kHz 0.1 0.3 % CT VIN = 1 V[rms], f = 1 kHz −78 −66 dB CBmax VIN = 1 V[rms], f = 1 kHz −1 0 1 dB CB1/4 VIN = 1 V[rms], f = 1 kHz −2 0 2 dB AGC gain 1 *1 VAGC1 VIN = 50 mV[rms], f = 1 kHz 77 110 150 mV[rms] *1 VAGC2 VIN = 1 V[rms], f = 1 kHz 230 345 470 mV[rms] The maximum value of sink current of pin 17 at ACK 2.0 10 mA Level at surround max. *1 Noise level at surround max. *2 Total harmonic distortion at surround max. *1 Crosstalk *2 Channel balance (max.) Channel balance (1/4) *1 *1 THDSU AGC AGC gain 2 I2C interface Sink current at ACK IACK SCL, SDA signal input high-level VIHI 3.5 5.0 V SCL, SDA signal input low-level VILO 0 0.5 V Maximum input frequency fImax 100 Kbit/s Note) *1: The DIN audio filter is used. *2: The A-curve filter is used. SDC00026BEB 3 AN7396K ■ Electrical Characteristics at VCC = 9 V, Ta = 25°C ± 2°C (continued) • Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Min Typ Max Unit tBUF 4.0 µs Start condition set-up time tSU, STA 4.0 µs Start condition hold time tHD, STA 4.0 µs SCL/SDA low period tLO 4.0 µs SCL high period tHI 4.0 µs SCL/SDA rise time tR 1.0 µs SCL/SDA fall time tF 0.35 µs Data set-up time (write) tSU, DAT 0.25 µs Data hold time (write) tHD, DAT 0 µs Acknowledge set-up time tSU, ACK 3.5 µs Acknowledge hold time tHD, ACK 0 µs Stop condition set-up time tSU, STO 4.0 µs 1 LSB = (Data(max.) − Data(00))/63 0.1 1.0 1.9 LSB step I2C Symbol Conditions Interface Bus free before start DAC 6-bit DAC DNLE L6 AGC gain 3 (Sub address 04H: 05H) *1 VAGC3 VIN = 100 mV[rms], f = 1 kHz 150 mV[rms] AGC gain 4 (Sub address 04H: 03H) *1 VAGC4 VIN = 140 mV[rms], f = 1 kHz 200 mV[rms] AGC gain 5 (Sub address 04H: 01H) *1 VAGC5 VIN = 200 mV[rms], f = 1 kHz 250 mV[rms] AGC gain 6 (Sub address 04H: 07H) *1 VAGC6 VIN = 280 mV[rms], f = 1 kHz 350 mV[rms] AGC gain 7 (Sub address 04H: 03H) *1 VAGC7 VIN = 500 mV[rms], f = 1 kHz 180 290 430 mV[rms] Note) *1: The DIN audio filter is used. • DAC timing chart Start condition Slave address Sub address ACK ACK Data byte Stop ACK condition SDA tBUF tSU.DAT tLO tSU.STO tHD.DAT SCL tSU.STA 4 tHD.STA tR tF tHI tLO SDC00026BEB AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C Pin No. Pin name Equivalent circuit Description Voltage (V) 1 R-ret. R return 4.5 2 L-ret. L return 4.5 3 BL out L-ch. Spatializer output 4.5 R-ch. Spatializer output 4.5 3 4 BR out 4 5 AGC Level 2 Level 1 AGC level sensor This parameter fluctuates with the input level. 0.5 to 2.0 430 Ω 50 kΩ 5 6 L-in L-ch. input 4.5 6 50 kΩ 1/2 VCC SDC00026BEB 5 AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name 7 Equivalent circuit Description TIM2 Voltage (V) RMS detector 2 0.6 RMS detector 1 0.6 7 8 TIM1 8 9 MD Mode DAC output This parameter fluctuates with I2C data. 0.7 to 2.4 10 GND 11 L.T. Ground 3 0 L-ch. treble FC set 4.5 L-ch. bass FC set 4.5 5.7 kΩ 11 1.5 kΩ 1.5 kΩ 12 8 kΩ L.B. 8.64 kΩ 12 1.36 kΩ 6 SDC00026BEB AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name 13 Equivalent circuit B.D. Description Bass DAC output 13 250 Ω Voltage (V) This parameter fluctuates with I2C data. 250 Ω 1.1 to 2.3 9.4 kΩ 1.62 V 14 V.D. Volume DAC output 3V This parameter fluctuates with I2C data. 5 kΩ 14 250 Ω 2 to 3.8 11 kΩ 15 L-out L-ch. output 4.5 I2C Bus clock input I2C Bus data input 15 16 SCL 1 kΩ 16 17 SDA 17 1 kΩ SDC00026BEB 7 AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name 18 Equivalent circuit R-out Description R-ch. output Voltage (V) 4.5 18 19 T.D. Treble DAC output 19 250 Ω This parameter fluctuates with I2C data. 250 Ω 1.1 to 2.3 9.4 kΩ 1.62 V 20 BL.D. Balance DAC output 3V This parameter fluctuates with I2C data. 5 kΩ 20 250 Ω 2 to 3 250 Ω 21 R.T. R-ch. treble FC set 4 5.7 kΩ 21 1.5 kΩ 1.5 kΩ 8 8 kΩ SDC00026BEB 4.5 AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name 22 Equivalent circuit Description R.B. 8.64 kΩ Voltage (V) R-ch. bass FC set 4.5 Bass MIX gain adjustment 4.5 22 1.36 kΩ 23 BB 23 2.2 kΩ 24 VREF Reference voltage stabilization 4.5 50 kΩ 24 50 kΩ 25 R-in 25 R-ch. input 4.5 Power supply VCC 200 Ω 50 kΩ 1/2 VCC 26 VCC None 27 F-out F out 4.5 28 F-in F in 4.5 SDC00026BEB 9 AN7396K ■ Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name 29 Space Equivalent circuit VCC VCC Description VCC Space Voltage (V) This parameter fluctuates with I2C data. 2 to 3 29 30 VCA VCA This parameter fluctuates with I2C data. 2 to 3 ■ Conceptual Explanation of Spatializer Operation • Normal stereo All sounds are heard from only between two speakers, right and left. • Conventional surround The sound expands toward the outside of the speaker system, but the sound position comes apart mostly in the conventional systems. • Spatializer The sound expands toward the outside of the two speakers, and yet their positions are stable and an expanded, deep sound are gotten. 10 SDC00026BEB AN7396K ■ Precautions in Use and Application Method • Method of setting AGC control Turning on AGC, AGC is set to 0 dB for small signals, “Bootstrap” for medium signals, and “Gain Reduction” for large signals. The AGC input-output characteristics can be controlled by I2C as follows. AGC characteristic 1 000 AGC = Off "11" "00" AGC = On Output level (mV[rms]) "01" "10" 100 Data of sub address 04H D2 D1 10 1 1 mV 10 mV 100 mV 1V 10 V Input level (RMS) SDC00026BEB 11 12 47 nF 47 nF SDC00026BEB L-out 10 µF 15 2.2 kΩ 14 16 SCL 10 µF T.D. 19 10 µF 18 R-out 10 µF 17 SDA L-out 10 µF L.T. 10 nF L.B. 0.1 µF B.D. 10 µF V.D. 10 µF 15 14 13 12 11 10 9 8 7 6 2.2 kΩ 13 12 Volume control 11 10 µF L+R-out 10 µF 22 R.B. 0.1 µF 21 R.T. 10 nF 20 BL.D. 23 BB R-in Volume control L.T. 10 nF L.B. 0.1 µF B.D. 10 µF V.D. 10 µF Tone control 10 10 µF 24 VREF 25 AGC 5 10 µF L-in 10 µF TIM2 10 µF TIM1 10 µF Mode 10 µF GND 220 kΩ Tone control 9 8 7 Spatializer 6 VCC 100 nF BR 4 BL 3 Spatializer 10 µF L-in 10 µF TIM2 10 µF TIM1 10 µF Mode 10 µF GND 26 47 nF AGC 5 10 nF 1 µF Non-polarity L-ret. 2 R-ret. 1 47 nF 220 kΩ AGC 27 F-out 28 F-in 150 kΩ 22 µF 29 Space 30 VCA AGC BR 4 BL 3 L-ret. 2 R-ret. 1 10 nF 1 µF Non-polarity 10 µF 10 µF 16 17 18 10 µF SCL SDA R-out 10 µF 0.68 µF 22 R.B. 0.1 µF 21 R.T. 10 nF 20 BL.D. 10 µF 19 T.D. 23 BB R-in VCC 100 nF 24 VREF 25 26 27 F-out 28 F-in 150 kΩ 22 µF 29 Space 30 VCA AN7396K ■ Application Circuit Examples • Bass reinforcement circuit example Bass reinforcement Balance control/ Mute • Application circuit example of obtaining L+R output instead of bass reinforcement Bass reinforcement Balance control/ Mute AN7396K ■ New Package Dimensions (Unit: mm) • SDIP030-P-0400B (Lead-free package) 26.68±0.30 16 15 (0.894) 1.778 0.50+0.10 -0.05 0.70+0.10 -0.05 0.90+0.10 -0.05 1.13±0.25 3.30±0.25 1 4.83±0.25 8.60±0.20 30 10.16 +0.10 3° to 15° 0.30 -0.05 Seating plane SDC00026BEB 13 Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. 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Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited. 2001 MAR