NJW1195 4-Channel Electronic Volume with Input Selector ■ GENERAL DESCRIPTION The NJW1195 is a 4-channel electronic volume with 4-in 2-out stereo audio selector. It performs low noise and low distortion characteristics with resistance ladder circuit. The NJW1195 is also available for 2-channel differential transmission electronic volume with 2-in 1-out stereo audio selector by a differential transmission select function. All of functions are controlled via three-wired serial bus. Selectable 4-Chip address is available for using four chips on same serial bus line. It’s suitable for two-channel stereo system and or multi-channel audio system. ■ FEATURES ● Operating Voltage ● 3-Wired Serial Control ● Selectable 4-Chip Address ● Low Output Noise ● Low Distortion ● 4in 2out Stereo Signal Selector ● Volume ● Differential transmission select function ● Channel Separation ● Zero Cross Detection ● Bi-CMOS Technology ● Package Outline ■ PACKAGE OUTLINE NJW1195V ±4.5 to ±7.5V Chip Address Select Function Available for using four chips on same serial bus line -118dBV typ. 0.0003% typ. at Vin=1Vrms (Differential transmission) +31.5 to –95dB / 0.5dB step, Mute -120dB typ. SSOP32 ■ BLOCK DIAGRAM Application example 1 Application example 2 4-channel electronic volume with 4-in 2-out stereo audio selector (DIFF pin = Low) 2-channel differential transmission electronic volume with 2-in 1-out stereo audio selector (DIFF pin = High) 4-input 2-output stereo selector (Single) InA1 InA2 InA3 InA4 4-channel Electronic Volume (Single) Main Volume :+31.5 to -95dB / 0.5dBstep Out1A Mute 2-input 1-output stereo selector (Differential) 2-channel Electronic Volume (Differential) Main Volume :+31.5 to -95dB / 0.5dBstep InA1+ InA1InA2+ InA2- OutA+ OutA- Mute Out2A Mute InB1 InB2 InB3 InB4 Out1B Mute Out2B InB1+ InB1InB2+ InB2- OutB+ OutB- Mute Mute Zero Cross Detection Control Logic Data Latch ADR1 Clock ADR0 Ver 1.2 for web DIFF=Low Zero Cross Detection DIFF=High Control Logic Data Latch ADR1 Clock ADR0 –1– NJW1195 ■ ABSOLUTE MAXIMUM RATING (Ta=25°°C) PARAMETER SYMBOL RATING UNIT V+/V- +8/-8 V Maximum Input Voltage VIM V Power Dissipation PD V+/V800 Power Supply Voltage mW NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting Operating Temperature Range Topr -40 ~ +85 °C Storage Temperature Range Tstg -40 ~ +125 °C ■ ELECTRICAL CHARACTERISTICS (Ta=25°°C, V+/V-=± ±7V, RL=47kΩ Ω, Volume=0dB) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT ±4.5 ±7.0 ±7.5 V ◆ Power Supply Operating Voltage V+/V- Supply Current 1 Supply Current 2 ICC No signal - 9 15 mA IEE No signal - 9 15 mA 3.6 4.2 - Vrms -0.5 0 0.5 dB +14 +15 +16 dB -0.5 0 0.5 dB -1.0 0 1.0 dB - -95 - dB - -120 - dB - -115 - dB - -95 - dB - -120 -90 dB - -100 - dB - -120 -90 dB - -100 - dB 15 20 - kΩ ◆ Input/Output Characteristics (Output) Maximum Output Voltage VOM Voltage Gain 1 GV1 Voltage Gain 2 GV2 Voltage Gain Error 1 ∆GV1 Voltage Gain Error 2 ∆GV2 Maximum Attenuation ATT Mute level Mute Cross Talk 1 CT1 Cross Talk 2 CT2 Channel Separation 1 CS1 Channel Separation 2 CS2 Channel Separation 3 CS3 Channel Separation 4 CS4 Input Impedance * RIN f=1kHz, THD=1% Volume=0dB VIN=2Vrms, f=1kHz Volume=0dB VIN=100mVrms, f=1kHz Volume=+15dB VIN=2Vrms, f=1kHz Volume=0dB VIN=2Vrms, f=1kHz Volume=-60dB f=1kHz, VIN=2Vrms Volume=-95dB, A-weight f=1kHz, VIN=2Vrms Volume=Mute, A-weight f=1kHz,VIN=2Vrms,A-weight Volume=0dB, Rg=0Ω f=20kHz, VIN =2Vrms, Volume=0dB, Rg=0Ω f=1kHz, VIN =2Vrms,A-weight Volume=0dB, Rg=0Ω Out1 vs. Out2 f=20kHz, VIN =2Vrms, Volume=0dB, Rg=0Ω Out1 vs. Out2 f=1kHz, VIN =2Vrms,A-weight Volume=0dB, Rg=0Ω OutA vs. OutB f=20kHz, VIN =2Vrms, Volume=0dB, Rg=0Ω OutA vs. OutB Select Channel Input Terminal * Input Impedance is reduced by half (10kΩ typ.) when input selector 1 (SEL1) and input selector 2 (SEL2) chose the same input. –2– Ver 1.2 for web NJW1195 ■ ELECTRICAL CHARACTERISTICS (Ta=25°°C, V+/V-=± ±7V, RL=47kΩ Ω, Volume=0dB) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT -118 (1.26µ) -118 (1.26µ) -100 (10µ) dBV (Vrms) dBV (Vrms) - 0.001 - % - 0.0015 - % - 0.0007 - % - 0.001 - % - 0.001 - % - 0.0015 - % - 0.0015 0.02 % - 0.0015 - % - 0.0003 - % - 0.0003 - % 2.5 - V + V 0 - 1.5 V ◆ Input/Output Characteristics (Output) Output Noise1 VNO1 Output Noise2 VNO2 Total Harmonic Distortion 1 T.H.D.1 Total Harmonic Distortion 2 T.H.D.2 Total Harmonic Distortion 3 T.H.D.3 Total Harmonic Distortion 4 T.H.D.4 Total Harmonic Distortion 5 T.H.D.5 Total Harmonic Distortion 6 T.H.D.6 Total Harmonic Distortion 7 T.H.D.7 Total Harmonic Distortion 8 T.H.D.8 Total Harmonic Distortion 9 T.H.D.9 Volume=0dB, Rg=0, A-weight Volume=-95dB, Rg=0, A-weight f=1kHz,VIN=200mVrms,VOL=0dB, BW=400Hz-30kHz f=10kHz, VIN =200mVrms,VOL=0dB, BW=400Hz -30kHz f=1kHz, VIN =2Vrms,VOL=0dB, BW=400Hz -30kHz f=10kHz, VIN =2Vrms,VOL=0dB, BW=400Hz-30kHz f=1kHz, VIN =200mVrms, VOL=+15dB, BW=400Hz-30kHz f=10kHz, VIN =200mVrms, VOL=+15dB, BW=400Hz-30kHz f=1kHz, VIN =2Vrms, VOL=-18dB, BW=400Hz-30kHz f=10kHz, VIN =2Vrms, VOL=-18dB, BW=400Hz-30kHz - - f=1kHz, VIN =1Vrms,VOL=0dB, BW=400Hz-30kHz, Differential transmission f=10kHz, VIN =1Vrms,VOL=0dB, Total Harmonic Distortion 10 T.H.D.10 BW=400Hz-30kHz, Differential transmission ◆Logic Control Characteristics High Level Input Voltage VIH Low Level Input Voltage VIL DATA, CLOCK, LATCH, ADR0, ADR1, DIFF Terminal Input DATA, CLOCK, LATCH, ADR0, ADR1, DIFF Terminal Input [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. Ver 1.2 for web –3–