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| NJM2179 SRS 3D SURROUND AUDIO PROCESSOR GENERAL DESCRIPTION The NJM2179 is a SRS 3D surround audio processor regenerating the 3D surround sound by two speakers. It regenerates 3D surround sound from only stereo input. The features of wide operating voltage range, wide dynamic range, low output noise are suitable for any audio applications. PACKGE OUTLINE NJM2179D FEATURES Operating Voltage (4.7 to 13V) Low Supply Current (7mA typ. at 3D-STEREO mode) Wide Dynamic Range (>110dB) Low Output Noise (22Vrms typ. at 3D-STEREO mode) BYPASS Gain (-3dB typ.) BYPASS FUNCTION(Through) SPACE and CENTER control Internal Mode Control Switch Bipolar Technology Package Outline DIP16,DMP16 NJM2179M PIN CONFIGURATION BLOCK DIAGRAM Rch Input 1 2 Rin NC Cout Cin Vref Rout NC V+ Lin PNout PNin Sout Sin Lout MODE GND 16 15 14 13 12 11 10 9 Lch Input EXTERNAL Filter Output 16 15 14 13 12 11 10 9 EX TERNAL CENTER Control Output CENTER Control Input V +/ 2 Rch Output 3 4 5 6 7 EXTERNAL Filter Input SPACE Control Output SPACE Control Input -1 FILTER -1 BYPASS Lch Output 1 2 3 4 5 6 SRS-STEREO 7 8 SRS / BYPASS Mode Select Ground 4.7 TO 13.0V Supply 8 (1/7) NJM2179 ABSOLUTE MAXIMUM RATING (Ta=25 C) PARAMETER SYMBOL RATINGS UNIT Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range V + 7 (DIP16) 700 (DMP16) 350 -20 to +75 - 40 to +125 V mW C C PD Topr Tstg + ELECTRICAL CHARACTERISTICS (V =12V, Ta=25 C , Vin=0dBu(775mVrms), unless otherwise specified) PARAMETER SYM BOL TEST CONDITION MIN TYP MAX UNIT Operating Voltage Operating Current Reference Voltage Maximum Input Voltage V + 4.7 No Signal V /2 Vin=Lch f=1kHz Vout=Lch at THD=3% Vin=Lch f=125Hz Vout=Rch at THD=3% SPACE VR Max CENTER VR Min f=1kHz SPACE VR Min CENTER VR Min Lch Rch Rch Lch Vin=GND DIN-AUDIO Vin=-10dBu Lch f=1kHz SPACE VR Max CENTER VR Min f=1kHz + 12.0 5.5 13.0 8.8 10.0 6.5 - V mA V ICC VREF VINMAX BYPASS 3D-STEREO BYPASS 5.5 8.0 (1.95) 2.8 (1.07) 7.0 V /2 10.0 (2.45) 4.8 (1.35) + 3D-STEREO - dBu (Vrms) Channel Balance CHBAL 3D-STEREO -1.0 0.0 1.0 dB Output Noise Total Harmonic Distortion VNOISE THD 3D-STEREO - 22.0 60.0 Vrms 3D-STEREO BYPASS 3D-STEREO -5.0 -15.3 0.10 -3.0 -13.3 -1.0 -11.3 % dB dB Bypass Gain Feed Through Gain GBypass L+R Gain L-R Gain GTHROUGH f=1kHz SPACE VR Min CENTER VR Min L,Rch L or Rch f=1kHz GL+R SPACE VR Min CENTER VR Max Lch Rch f=125Hz GL-R SPACE VR Max CENTER VR Min Lch Rch 3D-STEREO -10.5 -8.5 -6.5 dB 3D-STEREO 7.0 9.0 11.0 dB (2/7) NJM2179 ELECTRICAL CHARACTERISTICS (V =12V,Ta=25 C , Vin=0dBu(775mVrms), unless otherwise specified) PARAMETER SYM BOL TEST CONDITION MIN TYP MAX UNIT + MODE Select Control Voltage VMODE Vin=HIGH LEVEL Vin=LOW LEVEL 2.0 0.0 - - V + V 0.7 MODE Switch BYPASS MODE 3D-STEREO MODE L H (3/7) NJM2179 PIN FUNCTION 1,16 PIN:INPUT V+ 3,5,6,11,13 PIN:OUTPUT V+ 50k Vref 4PIN:INPUT V+ 12 PIN:INPUT V+ 15.5k 15.5k 8.1k 8.1k 10k 15.5k 8.1k Vref Vref Vref (4/7) NJM2179 PIN FUNCTION 12 PIN:INPUT V+ 10k 15.5k 8.1k Vref (5/7) NJM2179 APPLICATION CIRCUIT R5 R6 C7 R8 R9 Lout Lin C8 R7 C9 R10 R4 SPACE VR R3 C6 10K R2 MODE 10 C5 C10 R11 16 15 14 13 12 11 9 EXTERNAL -1 FILTER -1 BYPASS SRS-STEREO 1 C1 2 NC 3 10K 4 C2 5 C3 6 7 NC 8 C4 CENTER VR Rout Rin R1 Parts No. C1,C2,C3,C5 C6,C10 C4 C7,C9 C8 Value 10F 10F 100F 0.47F 4700pF Tolerance 5% 5% Parts No. R1,R2,R3 R4 R5 R6 R7 R8 R9 R10 R11 Vref Value 10k ohm 62k ohm 4.3k ohm 1.5k ohm 3.9k ohm 47k ohm 33k ohm 110k ohm 1k ohm Tolerance 5 % 5 % 5 % 5 % 5 % 5 % 5 % 5 % 5 % V+ (6/7) NJM2179 TYPICAL CHARACTERISTICS 3D STEREO GAIN STRUCTURE 20 15 10 L-R GAIN [dB] 5 0 Bypass -5 L+R -10 Through -15 -20 10 100 1K 10K 100K FREQUENCY f [Hz NOTE The Sound Retrieval System (SRS) technology incorporated in the NJM2179 is owned by SRS Labs, a US Corporation. The SRS technology is protected under U.S. Patent No.4,866,774; 4,748,669; and 4,841,572 with numerous additional issued and pending foreign patents. The trademarks "SRS", "the SRS symbol" and "Sound Retrieval System" are registered in the U.S. and selected foreign countries. In order to purchase and implement the NJM2179, all customers must enter into a license agreement directly with SRS Labs for the payment of royalties and to ensure proper trademark usage. Neither the purchase of the NJM2179, nor the corresponding sale of audio enhancement equipment conveys the right to commercialized recordings made with the Sound Retrieval System. For further information, please contact: SRS Labs,Inc. 2909 Daimler Street. Santa Ana, CA 92705 USA Tel:949-442-1070 Fax:949-852-1099 http://www.srslabs.com [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. (7/7) |
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