NJW1112 8-IN 4-OUT STEREO AUDIO SELECTOR GENERAL DESCRIPTION PACKAGE OUTLINE The NJW1112 is an 8-input 4-output stereo audio selector. It includes four independent 8-input-1output stereo audio selectors and 0dB fixed gain buffers. The NJW1112 performs superior audio characteristics such as low distortion, low output noise and low crosstalk. In addition, the NJW1112 is available to expand to 16-input NJW1112V 4-output stereo audio selector without sound quality deterioration, because it is able to connect in parallel by Output switch function. All of internal status and variables are controlled by three-wired serial bus. Selectable two Chip address is available for using two chips on same serial bus line. It is suitable for AV amplifiers, AV receivers, Analog audio switchers, Video conferencing, Security systems and others. FEATURES Operating Voltage 4.5 to 7.5V 8-Input, 4-Output Stereo Audio Selector Operating Current 14mA typ. Low On Resistance Output Switch On Resistance :15 typ. Low Distortion 0.0007% typ. Low Output Noise -119dBV typ. Low Crosstalk 120dB typ. Channel Separation 116dB typ. 3-Wired Serial Control Bi-CMOS Technology Package Outline SSOP32 BLOCK DIAGRAM V- ADR V+ V- OutA1 OutB1 OutA2 OutB2 OutA3 OutB3 OutA4 OutB4 DATA LATCH CLOCK + + 10 F 10 F 10 F 10 F 10 F 10 F 10 F 10 F 10 F + + + + + + + + + 100F 100F 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VDDOUT GND Control Logic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin Rin + + + + + + + + + + + + + + + + InA1 InB1 InA2 InB2 InB3 InA4 InB4 InA5 InB5 InA6 InB6 InB7 InA8 InB8 InA3 InA7 Ver.0.2 1 NJW1112 PIN CONFIGURATION 32 17 116 No. Symbol Function No. Symbol Function 1 InA1 Ach Input 1 17 OutB4 Bch Output 4 2 InB1 Bch Input 1 18 OutA4 Ach Output 4 3 InA2 Ach Input 2 19 OutB3 Bch Output 3 4 InB2 Bch Input 2 20 OutA3 Ach Output 3 5 InA3 Ach Input 3 21 OutB2 Bch Output 2 6 InB3 Bch Input 3 22 OutA2 Ach Output 2 7 InA4 Ach Input 4 23 OutB1 Bch Output 1 8 InB4 Bch Input 4 24 OutA1 Ach Output 1 9 InA5 Ach Input 5 25 V- V- Power Supply Terminal 10 InB5 Bch Input 5 26GND Ground Terminal 11 InA6 Ach Input 6 27 V+ V+ Power Supply Terminal 12 InB6 Bch Input 6 28 ADR Chip address setting terminal 13 InA7 Ach Input 7 29 CLOCK CLOCK 14 InB7 Bch Input 7 30LATCH LATCH 15 InA8 Ach Input 8 31 DATA DATA 16 InB8 Bch Input 8 32 VDDOUT Internal Digital Power Supply Output Ver.0.2 2