NJW1195AV Nisshinbo

NJW1195A 4-Channel Electronic Volume with Input Selector GENERAL DESCRIPTION PACKAGE OUTLINE 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 NJW1195AV 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 Dual power supply : 3.5 to 7.5V Single power supply : +7.0 to +15V 3-Wired Serial Control Chip Address Select Function Selectable 4-Chip Address Available for using four chips on same serial bus line Low Output Noise -118dBV typ. (1.26 Vrms typ.) Low Distortion 0.0003% typ. at Vin=1Vrms (Differential transmission) 4in 2out Stereo Signal Selector Volume +31.5 to 95dB / 0.5dB step, Mute Differential transmission select function Channel Separation -120dB typ. Zero Cross Detection Bi-CMOS Technology Package Outline SSOP32 BLOCK DIAGRAM V+ V- In B1 In B2 In B3 In B4 Out1 B Out2 B DIFF ADR1 ADR0 + 10 F 10 F 10 F 10 F 100 F 100 F 10 F 10 F + + + + + + + + + 100 F 100 F 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 +31.5dB to -95dB Ref 5V / 0.5dBstep, Mute 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 2 3 4 5 6 7 8 9 1 100 1111 1122 1 133 14 15 16 + + + + + + + + + 10 F 10 F 10 F 10 F 100 F 10 F 100 F 10 F V- D REF In A1 In A2 In A3 In A4 Out1 A Out2 A DATA CLOCK LATCH 1 Ver 0.4E NJW1195A PIN FUNCTION 32 17 1 16 No. SYMBOL FUNCTION No. SYMBOL FUNCTION 1 InA1 Ach Input 1 17 V - Power Supply (-) 2 InA2 Ach Input 2 18 V+ Power Supply (+) 3 InA3 Ach Input 3 19 ADR0 Chip address setting terminal 0 4 InA4 Ach Input 4 20 ADR1 Chip address setting terminal 1 5 A REF Ach Reference terminal 21 Out2B Bch 2 Output Switching noise rejection capacitor Differential transmission select 6 DCCAP 1A 22 DIFF (Ach 1) terminal Switching noise rejection capacitor 7 A REF Ach Reference terminal 23 DCCAP 2B (Bch 2) 8 Out1A Ach 1 Output 24 B REF Bch Reference terminal 9 A REF Ach Reference terminal 25 Out1B Bch 1 Output Switching noise rejection capacitor 10 DCCAP 2A 26 B REF Bch Reference terminal (Ach 2) Switching noise rejection capacitor 11 D REF Digital block Reference Voltage 27 DCCAP 1B (Bch 1) 12 Out2A Ach 2 Output 28 B REF Bch Reference terminal 13 VDDOUT Internal Digital Power Supply output 29 InB4 Bch Input 4 14 DATA Control data signal input 30 InB3 Bch Input 3 15 CLOCK Clock signal input 31 InB2 Bch Input 2 16 LATCH Latch signal input 32 InB1 Bch Input 1 Ver 0.4E 2