AN7399S PANASONIC
Document overview
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Technical content
1Publication date: November 2001 SDC00028BEB AN7399S Spatializer sound processor IC I Overview A spatializer audio processor is the Desper Inc.'s proprietary signal processing technology exclusively developed for the consumer electronics and multi- media market. It is based on the Desper's profes- sional 3D audio production system "PRO- Spatializer". You can enjoy a sound enhancement and extension effect with the conventional two-speaker stereo system by using the innovative technology adopted in this equipment. I Features
- Fewer external parts (minimum parts count: 4)
- Wide operating supply voltage: 4.5 V to 10 V
- A sound source in the center position is necessarily positioned in center regardless of the spatializer effect value. I Applications
- Radio cassette recorder, stereo-sound TV and VCR, personal computer, active speaker SOP016-P-0225C Unit: mm I Pin Assignment 161 152 143 134 125 116 107 RCNF1 RIN1 RIN2 GND V REF RCNF2 ROUT N.C. LCNF2 LIN1 LIN2 V CC SPON/OFF LCNF1 LOUT N.C. R 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 (SOP016-P-0225F). See the new package dimensions section later of this datasheet. 10.09±0.20 16 9 (0.60) 0.40±0.10 Seating plane Seating plane 4.30±0.20 6.40±0.30 1.50±0.200.10±0.10 0.65±0.100.65±0.10 1.27 0.15 +0.1 –0.0 0° to 10° 0.50±0.20
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I Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage V CC 10.5 V Supply current I CC 3.0 mA Power dissipation P D 31.5 mW Operating ambient temperature * Topr −25 to +75 °C Storage temperature * Tstg −55 to +150 °C I Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 4.5 to 10.0 V Pin No. Description
1 RCNF1
2 RIN1
3 RIN2
4 GND
6 RCNF2
7 ROUT
8N . C . Pin No. Description 9N . C .
10 LOUT
11 LCNF1
12 SPON/OFF
13 V CC
14 LIN2
15 LIN1
16 LCNF2
I Electrical Characteristics at VCC = 9 V, freq. = 1 kHz, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Off mode gain *1 VFFG V IN = 1 V[rms], f = 1 kHz −10 1d B Off mode total harmonic distortion *1 THDFF VIN = 1 V[rms], f = 1 kHz 0.01 0.05 % On mode total harmonic distortion *1 THDON VIN = 0.4 V[rms], f = 1 kHz 0.02 0.1 % Off mode output residual noise *2 NFF VIN = 0 mV[rms], RG = 4.7 kΩ 51 5 µV[rms] On mode output residual noise *2 NON VIN = 0 mV[rms], RG = 4.7 kΩ 72 0 µV[rms] Crosstalk (off mode) *1 CT V IN = 1 V[rms], f = 1 kHz − 95 −75 dB Maximum input level (off mode)*1 VMAX THD = 1%, f = 1 kHz 2.0 2.4 V[rms] Total circuit current at no load I TOTAL VIN = 0 mV[rms] 0.8 1.4 2.0 mA Off mode changeover voltage V OFF 0.0 0.5 V On mode changeover voltage V ON 2.7 VCC V Note) *1: Use DIN audio filter. *2: Use A-characteristic curve filter. Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for T a = 25°C.
Pin No. Symbol Equivalent circuit Description Voltage 1 RCNF1 Capacitor pin 1 4.5 V 2 RIN1 R-ch. input pin 1 4.5 V 3 RIN2 R-ch. input pin 2 4.5 V
4 GND GND pin 0 V
5V REF Reference voltage stabiliz- 4.5 V ing pin 6 RCNF2 Capacitor pin 2 4.5 V 7 ROUT R-ch. output pin 4.5 V 8N . C . 9N . C . I Terminal Equivalent Circuits 50 kΩ 1 kΩ 1/2VCC 50 kΩ 1 kΩ 1/2VCC 50 kΩ 50 kΩ 500 Ω 7
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Pin No. Symbol Equivalent circuit Description Voltage 10 LOUT L-ch. output pin 4.5 V 11 LCNF1 Capacitor pin 3 4.5 V 12 SPON/OFF Mode changeover pin V CC to 2.7 V /
0.5 V to 0 V
13 V CC Supply pin V CC
14 LIN1 L-ch. input pin 1 4.5 V 15 LIN2 L-ch. input pin 2 4.5 V 16 LCNF2 Capacitor pin 4 4.5 V I Terminal Equivalent Circuits (continued) 500 Ω 10 500 Ω 50 kΩ 1 kΩ 1/2VCC 50 kΩ 1 kΩ 1/2VCC
I Application Circuit Example I Conceptual Description on Spatializer Operation
- Stereo normal mode All sound are heard from between both left and right speakers.
- Conventional surround system Sound expands outside the speakers but the sound position is not stable.
- Spatializer The sound expands outside the two speakers and the sound position is stable. The sound come to have its expansion and depth. And also, a sound source in the center position is necessarily positioned in center regardless of the spatializer effect value. 161 152 143 134 125 116 107 RCNF1 RIN1 RIN RIN2 GND VREF RCNF2 ROUT N.C. LCNF2 LIN2 LIN1 VCC SPON/OFF LCNF1 N.C. LOUT LIN 10 µF 10 µF 4.7 nF 4.7 nF 10 µF 56 nF 10 µF 10 µF 100 µF 0 Ω to 50 kΩ Change a resistance value for variation of space effect I Usage Notes 1. Do not apply 0.3 V or more to pin 12 because it relates with pin 13 (V CC pin) 2. If more than 0.3 V is applied to pin 12, the current flows to pin 13 (V CC pin) via a surge protection diode connected to pin 12.
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I New Package Dimensions (Unit: mm)
- SOP016-P-0225F (Lead-free package) (1.05) (0.60) Seating plane Seating plane (0.60) 10.09±0.20 0.50±0.20 4.30±0.20 0.15 +0.10 -0.05 0.40+0.10 -0.05 0° to 10° 1.27
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