AN7396K

AN7396K PANASONIC

Document overview

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Technical content

1Publication date: November 2001 SDC00026BEB AN7396K Sound signal processing with built-in Spatializer IC I Overview Spatializer Audio Processor is a signal processing technology, monopolized by Desper Products, Inc., that was developed for commercial electronics and multime- dia 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 I 2C Bus-controllable mute, sound AGC, bass reinforcement, tone (bass and treble), balance, and volume circuits. I Features

• Provides deep 3-D sound with conventional 2-speaker system.
• Performs optimal processing to the sound source re- corded with surround-effect so as not to give double effects.
• Provides the functions of muting, AGC, bass reinforce- ment, tone, balance, and volume control.
• Supports I 2C Bus controls. I Applications
• Televisions, videos, audio equipment, and game machines I Block Diagram SDIP030-P-0400 Unit: mm 3° to 15° 26.7±0.3 0.5±0.1 1.0±0.25 3.3±0.254.7±0.25 0.35–0.05 +0.1 8.6±0.3 0.9±0.25 10.16±0.25 1.778 301 R-ret. L-ret. BL BR AGC L-in TIM2 TIM1 Mode GND L.T. L.B. B.D. V .D. L-out VCA Space F-in F-out V CC R-in V REF BB R.B. R.T. BL.D. T.D. R-out SDA SCL AGC Spatializer Tone control V olume control Balance control/ Mute Bass reinforcement 2.2 kΩ Note) Spatializer  and the device trademark of circle-in-square 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. 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.

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Parameter Symbol Range Unit Supply voltage V CC 6.0 to 10.0 V Parameter Symbol Rating Unit Supply voltage V CC 11.0 V Supply current I CC 90 mA Power dissipation P D 990 mW Operating ambient temperature * Topr −25 to +75 °C Storage temperature * Tstg −55 to +150 °C Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for T a = 25°C. Pin No. Description 1 R-ret. 2 L-ret.

3 BL out

4 BR out

5 AGC

6 L-ch. input

7 TIM2

8 TIM1

9 Mode DAC output

10 GND

11 L-ch. treble F C set 12 L-ch. bass F C set

13 Bass DAC output

14 Volume DAC output

15 L-ch. output I Pin Descriptions I Absolute Maximum Ratings I Recommended Operating Range Pin No. Description

16 I 2C communication clock

17 I 2C communication data

18 R-ch. output

19 Treble DAC output

20 Balance DAC output

21 R-ch. treble F C set 22 R-ch. bass F C set

23 Bass MIX F C adjustment

25 R-ch. input

26 Power supply

27 F-out

28 F-in

29 Space

30 VCA

I Electrical Characteristics at VCC = 9 V, Ta = 25°C ± 2°C Parameter Symbol Conditions Min Typ Max Unit Volume max. level *1 VVmax VIN = 1 V[rms], f = 1 kHz −10 1 d B Volume 1/2 level *1 VV1/2 VIN = 1 V[rms], f = 1 kHz −14.5 −12.5 −10.5 dB Volume min. level *1 VVmin VIN = 1 V[rms], f = 1 kHz − 100 −90 dB Balance max. level *1 VBmax VIN = 1 V[rms], f = 1 kHz −10 1 d B Balance min. level *1 VBmin VIN = 1 V[rms], f = 1 kHz − 82 −80 dB Bus bootstrap level V BB VIN = 400 mV[rms], f = 50 Hz 10 12.5 15 dB Bus cut level V BC VIN = 400 mV[rms], f = 50 Hz −13.5 −11.0 −8.5 dB Treble bootstrap level V TB VIN = 400 mV[rms], f = 20 kHz 10 12.5 15 dB Treble cut level V TC VIN = 400 mV[rms], f = 20 kHz −13.5 −11.0 −8.5 dB Circuit current *1 ICCT VIN = 0 mV 45 65 90 mA Total harmonic distortion max. *1 THDmax VIN = 1 V[rms], f = 1 kHz  0.1 0.3 % Maximum input voltage *1 VImax THD = 1%, f = 1 kHz 2.0 2.2  V[rms] Muting level *1 VMUTE V IN = 1 V[rms], f = 1 kHz − 100 −90 dB 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 41 0 µV[rms] Bass reinforcement max. level VXB max VIN = 400 mV[rms], f = 50 Hz 7 9 11 dB Bass reinforcement min. level VXB min VIN = 400 mV[rms], f = 50 Hz 2 4 6 dB Level at surround max. *1 VSU1 VIN = 50 mV[rms], f = 1 kHz 415 600 750 mV[rms] Noise level at surround max. *2 VSN VIN = 0 mV, RG = 4.7 kΩ 110 150 µV[rms] Total harmonic distortion at THD SU VIN = 50 mV[rms], f = 1 kHz  0.1 0.3 % surround max. *1 Crosstalk *2 CT V IN = 1 V[rms], f = 1 kHz − 78 −66 dB Channel balance (max.) *1 CBmax VIN = 1 V[rms], f = 1 kHz −10 1 d B Channel balance (1/4) *1 CB1/4 VIN = 1 V[rms], f = 1 kHz −20 2 d B AGC AGC gain 1 *1 VAGC1 VIN = 50 mV[rms], f = 1 kHz 77 110 150 mV[rms] AGC gain 2 *1 VAGC2 VIN = 1 V[rms], f = 1 kHz 230 345 470 mV[rms] I2C interface Sink current at ACK I ACK The maximum value of sink current 2.0 10  mA of pin 17 at ACK SCL, SDA signal input V IHI 3.5  5.0 V high-level SCL, SDA signal input V ILO 0  0.5 V low-level Maximum input frequency f Imax  100 Kbit/s Note) *1: The DIN audio filter is used. *2: The A-curve filter is used.

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Note) *1: The DIN audio filter is used. Parameter Symbol Conditions Min Typ Max Unit I2C Interface Bus free before start t BUF 4.0  µ s Start condition set-up time t SU, STA 4.0  µ s Start condition hold time t HD, STA 4.0  µ s SCL/SDA low period t LO 4.0  µ s SCL high period t HI 4.0  µ s SCL/SDA rise time t R  1.0 µs SCL/SDA fall time t F  0.35 µs Data set-up time (write) t SU, DAT 0.25  µ s Data hold time (write) t HD, DAT 0  µ s Acknowledge set-up time t SU, ACK  3.5 µs Acknowledge hold time t HD, ACK 0  µ s Stop condition set-up time t SU, STO 4.0  µ s DAC 6-bit DAC DNLE L 6 1 LSB = (Data(max.) − Data(00))/63 0.1 1.0 1.9 LSB step AGC gain 3 V AGC3 VIN = 100 mV[rms], f = 1 kHz  150  mV[rms] (Sub address 04H: 05H) *1 AGC gain 4 V AGC4 VIN = 140 mV[rms], f = 1 kHz  200  mV[rms] (Sub address 04H: 03H) *1 AGC gain 5 V AGC5 VIN = 200 mV[rms], f = 1 kHz  250  mV[rms] (Sub address 04H: 01H) *1 AGC gain 6 V AGC6 VIN = 280 mV[rms], f = 1 kHz  350  mV[rms] (Sub address 04H: 07H) *1 AGC gain 7 V AGC7 VIN = 500 mV[rms], f = 1 kHz 180 290 430 mV[rms] (Sub address 04H: 03H) *1 I 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.
• DAC timing chart SDA Start condition tBUF tSU.DAT tSU.STA tHD.STA tR tF tHI tLO tHD.DAT tSU.STO tLO Slave address Sub address Data byte Stop conditionACK ACK ACK SCL

I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C Pin No. Pin name Equivalent circuit Description V oltage (V) 1 R-ret.  R return 4.5 2 L-ret.  L return 4.5 3 BL out L-ch. Spatializer output 4.5 4 BR out R-ch. Spatializer output 4.5

5 AGC AGC level sensor This parameter

the input level. 0.5 to 2.0 6 L-in L-ch. input 4.5 Level 2 Level 1 430 Ω 50 kΩ 50 kΩ 1/2 VCC

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I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name Equivalent circuit Description V oltage (V) 7 TIM2 RMS detector 2 0.6 8 TIM1 RMS detector 1 0.6 9M D  Mode DAC output This parameter fluctuates with I2C data. 0.7 to 2.4

10 GND  Ground 0

11 L.T. L-ch. treble FC set 4.5 12 L.B. L-ch. bass F C set 4.5 5.7 kΩ 1.5 kΩ 8 kΩ 1.5 kΩ 8.64 kΩ 12 1.36 kΩ

I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name Equivalent circuit Description V oltage (V) 13 B.D. Bass DAC output This parameter fluctuates with I2C data. 1.1 to 2.3 14 V.D. Volume DAC output This parameter fluctuates with I2C data. 2 to 3.8 15 L-out L-ch. output 4.5

16 SCL I 2C Bus clock input 

17 SDA I 2C Bus data input 

11 kΩ 5 kΩ 14 250 Ω 1 kΩ 1 kΩ 250 Ω 13 250 Ω 9.4 kΩ 1.62 V

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I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name Equivalent circuit Description V oltage (V) 18 R-out R-ch. output 4.5 19 T.D. Treble DAC output This parameter fluctuates with I2C data. 1.1 to 2.3 20 BL.D. Balance DAC output This parameter fluctuates with I2C data. 2 to 3 21 R.T. R-ch. treble FC set 4.5 250 Ω 19 250 Ω 9.4 kΩ 1.62 V 3 V 250 Ω 5 kΩ 20 250 Ω 5.7 kΩ 1.5 kΩ 8 kΩ 1.5 kΩ

I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name Equivalent circuit Description V oltage (V) 22 R.B. R-ch. bass F C set 4.5 23 BB Bass MIX gain adjustment 4.5 24 V REF Reference voltage 4.5 stabilization 25 R-in R-ch. input 4.5

26 V CC None Power supply V CC

27 F-out  F out 4.5 28 F-in  F in 4.5 232.2 kΩ 50 kΩ 50 kΩ 50 kΩ 200 Ω 1/2 VCC 8.64 kΩ 22 1.36 kΩ

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I 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 con- ventional 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. I Terminal Equivalent Circuits at VCC = 9 V, Ta = 25°C (continued) Pin No. Pin name Equivalent circuit Description V oltage (V)

29 Space Space This parameter

I2C data. 2 to 3

30 VCA  VCA This parameter

I2C data. 2 to 3 VCC VCCVCC

I 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 100 1 000 1 mV 10 mV 100 mV 1 V 10 V Input level (RMS) Output level (mV[rms]) AGC = Off AGC = On D2 D1 Data of sub address 04H "11" "00" "01" "10"

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I Application Circuit Examples

• Bass reinforcement circuit example
• Application circuit example of obtaining L+R output instead of bass reinforcement R-ret. L-ret. BL BR AGC L-in TIM2 TIM1 Mode GND L.T. L.B. B.D. V. D . L-out VCA Space F-in F-out VCC R-in 10 µF10 µF 10 µF 1 µF Non-polarity 22 µF150 kΩ 100 nF 10 nF 47 nF 47 nF VREF BB R.B. R.T. BL.D. T.D. R-out SDA SCL 10 µF 10 µF 10 µF 10 µF 0.68 µF 0.1 µF 10 nF 10 µF 220 kΩ 10 µF 10 µF 10 µF 10 nF 0.1 µF 10 µF 10 µF 301 AGC Spatializer Tone control V olume control Balance control/ Mute Bass reinforcement 2.2 kΩ R-ret. L-ret. BL BR AGC L-in TIM2 TIM1 Mode GND L.T. L.B. B.D. V. D . L-out VCA Space F-in F-out VCC R-in 10 µF10 µF 10 µF 1 µF Non-polarity 22 µF150 kΩ 100 nF 10 nF 47 nF 47 nF VREF BB R.B. R.T. BL.D. T.D. R-out SDA SCL L+R-out 10 µF 10 µF 10 µF 10 µF 10 µF 0.1 µF 10 nF 10 µF 220 kΩ 10 µF 10 µF 10 µF 10 nF 0.1 µF 10 µF 10 µF 301 AGC Spatializer Tone control V olume control Balance control/ Mute Bass reinforcement 2.2 kΩ

I New Package Dimensions (Unit: mm)

• SDIP030-P-0400B (Lead-free package) 8.60±0.20 26.68±0.30 0.30 +0.10 -0.05 4.83±0.25 Seating plane 3.30±0.25 1.13±0.25 (0.894) 0.90+0.10 -0.05 0.50+0.10 -0.05 0.70+0.10 -0.05 3° to 15° 10.161.778

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2001 MAR