INPUT(Bch) INPUT(Ach) NJU7391A 2-CHANNEL Audio Processor with eala surround Q GENERAL DESCRIPTION Q PACKAGE OUTLINE The NJU7391A is a 2-channel Audio Processor with 5-in 1-out stereo audio selector, 2-band Tone Control and eala surround. The NJU7391A performs low noise and low distortion characteristics with resistance ladder circuit. All of functions are controlled via three-wired serial bus. Q FEATURES O Operating Voltage +4.7 to +9.7V NJU7391AV O Three-wired serial bus O Low output noise -110dBVtyp. O Low THD 0.002%typ. (Vo=1Vrms, Gv=0dB, f=1kHz) 0.01%typ. (Vo=2Vrms, Gv=0dB, f=1kHz) 0.01%typ (Vo=2Vrms, Gv=+6dB, f=10kHz) O Input Selector(X5) O Input Gain 0 to +14dB/2dBstep O Volume 0 to -95.0dB / 1dBstep, MUTE O Tone Control 0 to 14dB/2dBstep O eala Surround 3-level effects O CMOS Technology O Package Outline SSOP32 Q BLOCK DIAGRAM 1uF 1uF + + 1 32 + + 2 31 + + 3 30 + + 4 29 + + 5 28 6 27 1uF 1uF 7 26 VOL VOL 6.8nF 6.8nF 8 25 TRE TRE 47nF 47nF 9 24 BASS BASS 5.6k 5.6k 10 23 220nF 220nF 11 22 4.7nF 4.7nF eala 12 21 + + 4.7uF 4.7uF OUTPUT(Bch) OUTPUT(Ach) GND digi + 13 20 4.7uF V+ GND ana V+ digi 14 19 bias DATA V+ ana 15 18 3-wire 100uF CLOCK 16 17 LATCH 1 NJU7391A Q PIN CONFIGURATION SSOP32 IN1A IN1B 1 32 2 IN2A IN2B 31 IN3A IN3B 3 30 4 IN4A IN4B 29 IN5A IN5B 5 28 SELOUTA SELOUTB 6 27 VOL1A VOL1B 7 26 8 TONE-HA TONE-HB 25 TONE-BB 9 TONE-BA 24 10 TONE-DBA TONE-DBB 23 11 SRA SRB 22 12 OUTA OUTB 21 13 GND D VREF 20 GND A V+ D 14 19 18 15 DATA V+ A 17 16 CLOCK LATCH No. Symbol Function No Symbol Function 1 IN1A Ach Input1 Terminal 17 LATCH 3-Wired LATCH Input Terminal 2 IN2A Ach Input2 Terminal 18 V+ A Analog Supply Terminal 3 IN3A Ach Input3 Terminal 19 V+ D Digital Supply Terminal 4 IN4A Ach Input4 Terminal 20 VREF Reference Voltage Terminal 5 IN5A Ach Input5 Terminal 21 OUTB Bch Output Terminal 6 SELOUTA Ach Selector Output Terminal 22 SRB Bch Surround Filter Terminal 7 VOL1A Ach Volume Input Terminal 23 TONE-DBB Bch Bass(Tone) Filter Terminal 8 TONE-HA Ach Treble(Tone) Filter Terminal 24 TONE-BB Bch Bass(Tone) Filter Terminal 9 TONE-BA Ach Bass(Tone) Filter Terminal 25 TONE-HB Bch Treble(Tone) Filter Terminal 10 TONE-DBA Ach Bass(Tone) Filter Terminal 26 VOL1B Bch Volume Input Terminal 11 SRA Ach Surround Filter Terminal 27 SELOUTB Bch Selector Output Terminal 12 OUTA Ach Output Terminal 28 IN5B Bch Input5 Terminal 13 GND D Digital Ground Terminal 29 IN4B Bch Input4 Terminal 14 GND A Analog Ground Terminal 30 IN3B Bch Input3 Terminal 15 DATA 3-Wired DATA Input Terminal 31 IN2B Bch Input2 Terminal 16 CLOCK 3-Wired CLOCK Input Terminal 32 IN1B Bch Input1 Terminal 2