AN7399AN7399, Serwisówki TV, Układy Scalone
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ICs for Audio Common Use AN7399, AN7399S Spatializer sound processor IC 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. AN7399 Unit: mm 19.2±0.3 16 9 1 8 7.62±0.25 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. (0.71) 2.54 0.5±0.1 1.22±0.25 Seating plane DIP016-P-0300D AN7399S Unit: mm 10.09±0.20 16 9 Applications • Radio cassette recorder, stereo-sound TV and VCR, personal computer, active speaker 0 to 10 ° 0.50±0.20 1 8 (0.60) 1.27 0.40±0.10 Seating plane Seating plane SOP016-P-0225C Pin Assignment R 1 ° AN7399, AN7399S ICs for Audio Common Use Pin Descriptions Pin No. Description Pin No. Description 1 RCNF1 9 N.C. 2 RIN1 10 LOUT 3 RIN2 11 LCNF1 4 GND 12 SPON/OFF 5 V REF 13 V CC 6 RCNF2 14 LIN2 7 ROUT 15 LIN1 8 N.C. 16 LCNF2 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 * T opr −25 to +75 °C Storage temperature * T stg − 55 to + 150 ° C Note) * : Except for the operating ambient temperature and storage temperature, all ratings are for T a = 25°C. Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 4.5 to 10.0 V Electrical Characteristics at V CC = 9 V, freq. = 1 kHz, T a = 25 ° C Parameter Symbol Conditions Min Typ Max Unit Off mode gain * 1 VFFG V IN = 1 V[rms], f = 1 kHz − 1 0 1 dB Off mode total harmonic distortion * 1 THD FF V IN = 1 V[rms], f = 1 kHz 0.01 0.05 % On mode total harmonic distortion * 1 THD ON V IN = 0.4 V[rms], f = 1 kHz 0.02 0.1 % Off mode output residual noise * 2 N FF V IN = 0 mV[rms], R G = 4.7 k Ω 5 15 µ V[rms] On mode output residual noise * 2 N ON V IN = 0 mV[rms], R G = 4.7 k Ω 7 20 µ V[rms] Crosstalk (off mode) * 1 CT V IN = 1 V[rms], f = 1 kHz − 95 − 75 dB Maximum input level (off mode) * 1 V MAX THD = 1%, f = 1 kHz 2.0 2.4 V[rms] Total circuit current at no load I TOTAL V IN = 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 V CC V Note) * 1: Use DIN audio filter. * 2: Use A-characteristic curve filter. 2 ICs for Audio Common Use AN7399, AN7399S Terminal Equivalent Circuits 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 2 1 kΩ 50 kΩ 1/2V CC 3 RIN2 R-ch. input pin 2 4.5 V 3 1 kΩ 50 kΩ 1/2V CC 4 GND GND pin 0 V 5 REF Reference voltage stabiliz- 4.5 V ing pin 50 kΩ 5 50 kΩ 6 RCNF2 Capacitor pin 2 4.5 V 7 ROUT R-ch. output pin 4.5 V 500 Ω 7 8 .. 9 .. 3 AN7399, AN7399S ICs for Audio Common Use Terminal Equivalent Circuits (continued) Pin No. Symbol Equivalent circuit Description Voltage 10 LOUT L-ch. output pin 4.5 V 500 Ω 10 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 500 Ω 12 13 V CC Supply pin V CC 14 LIN1 L-ch. input pin 1 4.5 V 14 1 kΩ 50 k Ω 1/2V CC 15 LIN2 L-ch. input pin 2 4.5 V 15 1 kΩ 50 kΩ 1/2V CC 16 LCNF2 Capacitor pin 4 4.5 V 4 ICs for Audio Common Use AN7399, AN7399S Application Circuit Example Change a resistance value for variation of space effect 4.7 nF 4.7 nF 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. 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. 3. Spatializer is a registered logo of Desper Products Inc. The use of this device requires the approval of Desper Products Inc. 5 [ Pobierz całość w formacie PDF ] |
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