NJM2194 SRS Dialog Clarity Processor ■GENERAL DESCRIPTION The NJM2194 is a SRS Dialog Clarity Processor to enhance the dialog in a stereo signal by extracting the dialog information, augmenting it using a proprietary dialog clarity algorithm, and mixing it back in to the final stereo audio signal. When this stereo audio is played, the speech dialog becomes much easier to clearly hear while leaving the ambient information unchanged and the volume at a normal, more comfortable level for others in the room at the time. The NJM2194 is suitable for audio applications such as TV, DVD and others. ■PACKAGE OUTLINE NJM2194D NJM2194M ■FEATURES ● Operating Voltage +4.7 to +13V ● Low Output Noise 10µVrms typ. (Dialog Clarity mode, VR:MAX) ● Adjustable Dialog Clarity Effect ● Internal Mode Control Switch ● Bipolar Technology ● Package Outline DIP14, DMP14 ■PIN CONFIGURATION 14 13 12 11 10 9 8 1.VROUT 2.VRIN 3.TP 4.VREFOUT 5.VREFIN 6.V+ 7.GND 1 2 3 4 5 6 8.SW 9.CIN 10.COUT 11.ROUT 12.LOUT 13.RIN 14.LIN 7 The Dialog Clarity technology right incorporated in the NJM2194 are owned by SRS Labs, a U.S. Corporation and licensed to New Japan Radio Co., Ltd. Purchaser of NJM2194 must sign a license for use of the chip and display of the SRS Labs trademarks. Any products incorporating the NJM2194 must be sent to SRS Labs for review. Dialog Clarity is protected under U.S. and foreign patents issued and/or pending. Dialog Clarity, SRS and the symbol are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the NJM2194, nor the corresponding sale of audio enhancement equipment conveys the right to sell commercialized recordings made with any SRS technology. SRS Labs requires all set makers to comply with all rules and regulations as outlined in the SRS Trademark Usage Manual separately provided. 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 - 1 -B NJM2194 ■BLOCK DIAGRAM 9 10 1 2 8 a 12 b 14 50k Dialog Clarity 13 50k a 11 b 50k a:Bypass b:Dialog Clarity 50k V+ Vref 4 5 GND 6 7 ■ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT 14 V + Supply Voltage V Power Dissipation PD Operating Temperature Range Topr (DIP14) 500 (DMP14) 350 -40 to +85 Storage Temperature Range Tstg -40 to +125 mW °C °C ■OPERATING VOLTAGE PARAMETER Operating Voltage SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT - 4.7 12.0 13.0 V MIN. TYP. MAX. UNIT + V + ■ELECTRICAL CHARACTERISTICS (Ta=25°C, V =12V unless otherwise specified) TEST CONDITION PARAMETER Operating Current SYMBOL INPUT ICC OUTPUT MODE VR L R 0 0 - Bypass - - 5.7 8.6 0 0 - DC MAX - 5.7 8.6 0 0 - - - 5.8 6.0 6.2 No Signal Reference Voltage -2- VREF No Signal mA V NJM2194 ● AC CHARACTERISTICS + (Ta=25°C, V =12V, VIN=-10dBV (=316mVrms), f=1kHz, RL=4.7kΩ unless otherwise specified) TEST CONDITION PARAMETER Maximum Input Voltage Output Noise SYMBOL INPUT VIM VNO MODE VR - MIN. TYP. MAX. 10.0 (3.1) 12.0 (3.9) - L R f=1kHz THD=3% VIN 0 0 VIN L R Bypass f=1kHz THD=3% VIN 0 0 VIN L R DC MAX 3.4 (1.5) 5.4 (1.9) - Rg=0Ω A-Weighted 0 0 L R Bypass - - -112 (2.5) -106 (5.0) Rg=0Ω A-Weighted Total Harmonic Distortion OUTPUT dBV (Vrms) 0 0 L R DC MAX - -100 (10) -94 (20) f=1kHz VIN 0 0 VIN L R Bypass - - 0.005 0.01 f=1kHz VIN=-20dBV VIN 0 0 VIN L R DC MAX - 0.1 0.5 f=1kHz VIN 0 0 VIN L R Bypass - -1.0 0.0 1.0 f=1kHz VIN=-20dBV VIN 0 0 VIN L R DC MAX 4.4 6.4 8.4 f=1kHz VIN=-20dBV 0 VIN VIN 0 L R DC MAX -0.4 1.6 3.6 f=1kHz VIN=-20dBV VIN 0 0 VIN L R DC MIN -1.0 0.0 1.0 MIN. TYP. MAX. THD UNIT dBV (µVrms) % Bypass Gain Dialog Clarity Gain GVBYP GVDC dB dB + ● CONTROL CHARACTERISTICS (Ta=25°C, V =12V unless otherwise specified) PARAMETER Mode Select Control Voltage ■MODE SWITCH MODE SYMBOL TEST CONDITION UNIT + VIN=High Level 2.0 - V VIN=Low Level 0.0 - 0.7 VMODE V SW Bypass L or Open Dialog Clarity (DC) H NOTES Input Through Dialog Clarity mode -3- NJM2194 ■TERMINAL DESCRIPTION PIN No. SYMBOL EQUIVALENT CIRCUIT V+ V+ 50 VROUT VREFOUT COUT ROUT LOUT + V /2 50 1 4 10 11 12 V+ 2 3 V+ 400 VRIN TP + V /2 V+ V+ 50k V+ VREFIN 6 V + V /2 50k 5 VOLTAGE -4- + + V NOTE NJM2194 ■TERMINAL DESCRIPTION PIN No. SYMBOL 7 GND EQUIVALENT CIRCUIT NOTE 0V V+ 8 VOLTAGE V+ V+ SW 0V 150k 700 V+ 9 V+ 400 CIN V+/2 10k VREF V+ RIN LIN V+ V+/2 700 50k 13 14 V+ VREF -5- NJM2194 ■APPLICATION CIRCUIT R1 10k 11 C3 10µF 12 C5 10µF C6 10µF C7 10µF C8 10µF 13 Rch Out put Lch Output Rch Input Lch Input 14 C4 0.022µF 10 9 8 a b 50k Dialog Clarity a:Bypass b:Dialog Clarity 50k a b 50k 50k Vref 1 2 5 -6- 12V Min ∗) Dialog Clarity Effect is adjustable with the VR 6 C2 1µF C1 10µF Max 10kB VR 4 3 7 NJM2194 ■TYPICAL CHARACTERISTICS Operating Current vs. Operating Voltage Operating Current vs. Temperature V+=12V V+=1 to 15V, Ta=25oC 6 10 DC BYPASS 8 Operation Current [mA] Operating Current [mA] 5.5 6 DC 4 BYPASS 5 4.5 2 4 0 0 2 4 6 8 10 12 -50 14 0 50 100 150 Ta [ oC] Operating Voltage [V] Maximum Input Voltage vs. Operating Voltage (BYPASS) Maximum Input Voltage vs. Operating Voltage (DC) Vin=Lch, Vout=Lch, f=1KHz, RL=4.7kΩ, Vin=Lch, Vout=Lch, f=1kHz, RL=4.7kΩ, Rg=25 Ω, Ta=25oC 20 Rg=25Ω, Ta=25oC 20 15 Maximum Input Voltage [dBV] Maximum Input Voltage [dBV] 15 10 5 0 10 5 0 -5 -5 -10 0 4 8 12 16 -10 0 Operating Voltage [V] 4 8 12 16 Operating Voltage [V] Maximum Input Voltage vs. Temperature (DC) Maximum Input Voltage vs. Temperature (BYPASS) V+=12V, Vin=Lch, Vout=Lch, f=1KHz, RL=4.7kΩ, Rg=25 Ω 13 6 12.5 5.5 Maximum Input Voltage [dBV] Maximum Input Voltage [dBV] V+=12V, Vin=Lch, Vout=Lch, f=1kHz, RL=4.7kΩ, Rg=25 Ω 12 11.5 5 4.5 11 -50 0 50 Ta [ oC] 100 150 4 -50 0 50 100 150 Ta [ oC] -7- NJM2194 ■TYPICAL CHARACTERISTICS Output Noise Voltage vs. temperature Output vs. Temperature V+=12V, Vin=GND, Vout=Rch V+=12V, Vin=GND, Vout=Lch -90 -90 -95 -100 Output Noise Voltage [dBV] Output Noise Voltage [dBV] -95 DC -105 BYPASS -110 -100 DC -105 BYPASS -110 -115 -115 -120 -100 -50 0 50 100 -120 -100 150 -50 0 50 100 150 o Ta [ C] Ta [ oC] Total Harmonic Distortion vs. Input Voltage (BYPASS) V+=12V, Vin=Lch, Vout=Lch, f=100Hz, RL=4.7kΩ Rg=25 Ω, BW=10-80kHz V+=12V, Vin=Lch, Vout=Lch, f=1kHz, RL=4.7kΩ Rg=25 Ω, BW=10-80kHz 10 10 1 1 THD+N [%] THD+N [%] Total Harmonic Distotion vs. Input Voltage (BYPASS) Ta=85oC 0.1 Ta=85oC 0.1 Ta=25oC Ta=25 oC Ta=-40 oC Ta=-40 oC 0.01 0.01 0.001 0.001 -50 -40 -30 -20 -10 0 10 20 -50 30 -40 -30 -20 -10 0 10 20 30 Input Voltage [dBV] Input Voltage [dBV] Total Harmonic Distortion vs. Input Voltage (BYPASS) Total Harmonic Distortion vs. Input Voltage (DC) V+=12V, Vin=Lch, Vout=Lch, f=10kHz, RL=4.7kΩ Rg=25 Ω, BW=10-80kHz V+=12V, Vin=Lch, Vout=Lch, f=1kHz, RL=4.7kΩ, Rg=25 Ω, BW=10-80kHz 10 10 1 THD+N [%] THD+N [%] 1 Ta=85 oC 0.1 Ta=25oC Ta=-40oC Ta=85 oC Ta=25 oC Ta=-40oC 0.1 0.01 0.001 -50 -40 -30 -20 -10 0 Input Voltage [dBV] 10 20 30 0.01 -50 -40 -30 -20 -10 Input Voltage [dBV] -8- 0 10 20 NJM2194 ■TYPICAL CHARACTERISTICS Frequency Responce (BYPASS) Total Harmonic Distortion vs. Input Voltage (DC) V+=12V, Vin=Lch, Vout=Lch, f=10kHz, RL=4.7kΩ, Rg=25 Ω, BW=10-80kHz V+=12V, Vin=-10dBV Lch, Vout=Lch, RL=4.7kΩ, Rg=25 Ω 1 10 0.5 Ta=85 oC Ta=25 oC 1 THD+N [%] o Ta=-40 C Gain [dB] Ta=85oC Ta=25oC Ta=-40oC 0 0.1 -0.5 0.01 -50 -40 -30 -20 -10 0 10 -1 20 10 100 Input Voltage [dBV] 1000 10 4 10 5 Frequency [Hz] Frequency Responce (DC) Frequency Responce (DC) V+=12V, Vin=-20dBV Lch, Vout=Lch, RL=4.7kΩ, Rg=25Ω V+=12V, Vin=-20dBV Lch, Vout=Rch, RL=4.7kΩ, Rg=25Ω 10 10 5 8 0 Ta=85oC Ta=25 C 6 -5 o Gain [dB] Ta=-40 C Gain [dB] Ta=85 oC Ta=25 oC o 4 Ta=-40oC -10 -15 2 -20 0 -25 -30 -2 10 100 1000 10 4 10 10 5 100 1000 10 4 10 5 Frequency [Hz] Frequency [Hz] Gain vs. SW Control Voltage DC Offset Voltage vs. Temperature V+=12V, Vin=-20dBV Lch, Vout=Lch, f=1kHz, BYPASS-->DC V+=12V, Vout=Lch 20 6 DC Offset Voltage [mV] 15 Gain [dB] 10 Ta=85 oC 5 Ta=25oC Ta=-40oC 0 DC 5.5 BYPASS 5 -5 4.5 -10 0 0.5 1 1.5 2 -50 0 50 100 150 o SW Control Voltage [V] Ta [ C] -9- NJM2194 ■TYPICAL CHARACTERISTICS DC Offset Voltage vs. Temperature V+=12V, Vout=Rch DC Offset Voltage [mV] 6 DC 5.5 BYPASS 5 4.5 -50 0 50 100 150 o Ta [ C] [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. - 10 -