NJW1195A 4-Channel Electronic Volume with Input Selector ■ GENERAL DESCRIPTION The NJW1195A 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 NJW1195A 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. At the volume attenuated, the NJW1195A improves low distortion compared with NJW1195. Furthermore, the NJW1195A supports both single power supply operation and dual power supply operation. ■ FEATURES ● Operating Voltage ● ● ● ● ● ● ● ● ● ● ● ■ PACKAGE OUTLINE NJW1195AV Dual power supply : ±3.5 to ±7.5V Single power supply : +7.0 to +15V Chip Address Select Function Available for using four chips on same serial bus line -118dBV typ. (1.26µVrms typ.) 0.0003% typ. at Vin=1Vrms (Differential transmission) 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 +31.5 to –95dB / 0.5dB step, Mute -120dB typ. SSOP32 ■ BLOCK DIAGRAM In B1 In B2 In B3 In B4 Out1 B DIFF Out2 B ADR1 V+ ADR0 V+ 10µF 10µF 10µF 10µF 100µF 10µF 100µF + + + + + + + 30 29 32 31 28 27 26 25 24 10µF + + 23 22 100µF 21 20 19 100µF 18 +31.5dB to -95dB / 0.5dBs tep, Mute 17 Ref 5V VDD VOL1B +31.5dB to -95dB / 0.5dBstep, Mute VOL2B SEL1B SEL2B SEL1A SEL2A VOL2A +31.5dB to -95dB / 0.5dBstep, Mute Zero Cross Detection VOL1A Control Logic +31.5dB to -95dB / 0.5dBstep, Mute 1 10µF 2 + In A1 Ver. 0.1E for Web 10µF 3 + In A2 10µF 4 + In A3 10µF 5 + In A4 6 100µF 7 + 8 10µF 9 + Out1 A 10 10 100µF 11 11 + 12 12 13 13 + + 10µF D_REF 14 15 DATA CLOCK 16 VOut2 A LATCH –1– NJW1195A ■ 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 NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting mW 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, VOL=0dB) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT ±3.5 ±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 - -120 - dB - -100 - dB - -120 -90 dB - -100 - dB - -120 -90 dB - -100 - dB 12.0 16.7 - 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% VOL=0dB VIN=2Vrms, f=1kHz VOL=0dB VIN=100mVrms, f=1kHz VOL=+15dB VIN=2Vrms, f=1kHz VOL=0dB f=1kHz, VIN=2Vrms VOL=-60dB f=1kHz, VIN=2Vrms VOL=-95dB, A-weight f=1kHz, VIN=2Vrms VOL=Mute, A-weight f=1kHz, VIN =2Vrms,A-weight VOL=0dB, Rg=0Ω f=20kHz, VIN =2Vrms VOL=0dB, Rg=0Ω f=1kHz, VIN =2Vrms,A-weight VOL=0dB, Rg=0Ω, Out1 vs. Out2 f=20kHz, VIN =2Vrms VOL=0dB, Rg=0Ω, Out1 vs. Out2 f=1kHz, VIN =2Vrms,A-weight VOL=0dB, Rg=0Ω, Out A vs. Out B f=20kHz, VIN =2Vrms VOL=0dB, Rg=0Ω, Out A vs. Out B Select Channel Input Terminal * Input Impedance is reduced by half (9.1kΩ typ.) when input selector 1 (SEL1) and input selector 2 (SEL2) chose the same input. –2– Ver. 0.1E for Web NJW1195A ■ 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 - % - 0.001 - % - 0.001 - % - 0.001 - % - 0.001 - % - 0.0015 - % - 0.003 0.01 % - 0.003 - % - 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,Volume=0dB, BW=400Hz-30kHz f=10kHz, VIN =200mVrms,Volume=0dB, BW=400Hz -30kHz f=1kHz, VIN =2Vrms,Volume=0dB, BW=400Hz -30kHz f=10kHz, VIN =2Vrms,Volume=0dB, BW=400Hz-30kHz f=1kHz, VIN =200mVrms, Volume=+15dB, BW=400Hz-30kHz f=10kHz, VIN =200mVrms, Volume=+15dB, BW=400Hz-30kHz f=1kHz, VIN =2Vrms, Volume=-24dB, BW=400Hz-30kHz f=10kHz, VIN =2Vrms, Volume=-24dB, BW=400Hz-30kHz - - f=1kHz, VIN =1Vrms,Volume=0dB, BW=400Hz-30kHz, Differential transmission f=10kHz, VIN =1Vrms,Volume=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. 0.1E for Web –3–