NJU7392

NJU7392 2ch Pushbutton Interface EVR with eala Stereo Expander ■ GENERAL DESCRIPTION The NJU7392 is a 2-channel electronic volume which include a Volume control, 2-in stereo input selector (with 1 x Differential input), eala Stereo Expander control (Stereo enhancement for narrow speakers), Bass boost control with ALC feature and a Stand-by function (Power-saving mode). The NJU7392 has also built-in push button interface for its volume, Bass Boost and eala Stereo Expander controls - making application possible without the use of micro-controller. The NJU7392 is suitable for low power application and also for application with narrow speaker such as mobile audio player and cradle speaker for mobile game. ■ PACKAGE OUTLINE ■ FEATURES • Operating Voltage • Low operating current +2.7 to +5.5V 5mA typ. (Active mode) 1µA typ. (stand-by mode) • Low output noise 20µVrms typ. (eala Stereo Expander : ON) • Input Selector 2ch (single-end / quasi-differential) • Sound Space adjustment for narrow speaker • Pushbutton interface EVR 0 to -68dB, MUTE • Bass Boost with ALC • CMOS Technology • Package Outline SSOP32 ■ BLOCK DIAGRAM V+ V+ Power Button Power Indicator V+ Expander Indicator V+ Bass Indicator Input 1L Diff Input 1R Output L Input 2L Input Selector eala Stereo Expander P-VOL Bass Boost with Limitter Output R Input 2R V+ V+ Expander Button Input1/Input2 V+ Down V+ Up Bass Button V+ for palmtop for laptop NJU7392 Ver.1.5 E_DS –1– NJU7392 ■ ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER Power Supply Voltage Power Dissipation Maximum Input Voltage Operating Temperature Range Storage Temperature Range * 1) SYMBOL V + RATING +7 950* 1) UNIT V mW V o o PD VIMAX Topr Tstg 0~V * + 2) -40 ~ +85 -40 ~ +125 C C EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting 2) * Don’t apply the input voltage that exceeds supply voltage. ■ ELECTRICAL RECOMMENDED OPERATING CONDITION (Ta=25°C) PARAMETER Operating Voltage SYMBOL V + TEST CONDITION - MIN. 2.7 TYP. 3.3 MAX. 5.5 UNIT V ■ ELECTRICAL CHARACTERISTICS ●DC CHARACTERISTICS (Ta=25°C, V+=3.3V, unless otherwise specified) PARAMETER Operating Current Reference Voltage SYMBOL IDD1 IDD2 VREF TEST CONDITION No Signal, Active No Signal, Standby No signal MIN. 1.5 TYP. 5.0 0.1 1.65 MAX. 8.0 1.0 1.8 UNIT mA µA V ●AC CHARACTERISTICS (Ta=25°C, V =3.3V, VIN=500mVrms, f=1kHz, Expander: OFF, Treble:0dB, Bass Boost: OFF, VOL:0dB, unless otherwise specified) + TEST CONDITION PARAMETER SYMBOL L Maximum Input Voltage 1 Maximum Input Voltage 2 Maximum Input Voltage 3 VIM1 VIM2 VIM3 THD=1% BW=400Hz-30kHz Expander: Palmtop THD=1%, BW=400Hz-30kHz Expander: Palmtop Bass: ON, f=1kHz THD=1%, BW=400Hz-30kHz Rg=0Ω, A-weighted Rg=0Ω, A-weighted VOL=-68dB Expander: Palmtop Rg=0Ω, A-weighted Expander: Palmtop Bass: ON, Rg=0Ω, A-weighted BW=400Hz-30kHz Expander: Palmtop BW=400Hz-30kHz Expander: Palmtop Bass: ON BW=400Hz-30kHz IN R VIN 0 VIN VIN VIN 0 0 0 0 0 0 0 0 VIN 0 VIN 0 VIN VIN VIN 0 VIN VIN 0 0 0 0 0 0 0 0 VIN VIN 0 VIN 0 OUT L R L R L R L R L R L R L R L R L R L R MIN. TYP. MAX. UNIT 550 550 550 580 580 580 -100 (10) -100 (10) -90 (32) -90 (32) 0.05 0.1 0.1 -94 (20) -94 (20) -80 (100) -80 (100) 0.1 0.5 0.5 mVrms mVrms mVrms dBV (µVrms) dBV (µVrms) dBV (µVrms) dBV (µVrms) % % % Output Noise Voltage 1 Output Noise Voltage 2 Output Noise Voltage 3 Output Noise Voltage 4 Total Harmonic Distortion 1 Total Harmonic Distortion 2 Total Harmonic Distortion 3 VNO1 VNO2 VNO3 VNO4 THD+N1 THD+N3 THD+N3 - –2– NJU7392 Ver.1.5_E_DS NJU7392 TEST CONDITION PARAMETER SYMBOL L Bypass Gain Treble Gain Expander Gain 1 Expander Gain 2 Expander Gain 3 Expander Gain 4 Bass Gain Maximum Attenuate level Mute Level Channel Balance Bass Limit Level Cross Talk Channel Separation GVBYP GVTRE GVEXP1 GVEXP2 GVEXP3 GVEXP4 GVBASS GVVOL-68 Mute GCB Bass: ON Treble=0dB IN R VIN VIN VIN VIN VIN VIN 0 VIN 0 VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN 0 VIN VIN VIN VIN VIN VIN VIN 0 VIN 0 VIN VIN VIN VIN VIN VIN=0.7Vrms f=100Hz Selected Input: No Signal, Rg=0Ω BW=400Hz-30kHz Rg=0Ω BW=400Hz-30kHz OUT L R L R L R L R L R L R L R L R L R L R L R L R L R MIN. TYP. MAX. UNIT -1.0 2.0 1.7 3.0 2.1 3.3 4.0 -70 -1.0 0.75 70 70 0.0 3.0 3.7 5.0 4.1 5.3 6.0 -68 -90 0.0 1.0 80 80 1.0 4.0 5.7 7.0 6.1 7.3 8.0 -66 -86 1.0 1.25 - dB dB dB dB dB dB dB dB dB dB Vrms dB dB f=10kHz Expander: Laptop f=10kHz Expander: Palmtop f=10kHz Expander: Laptop Expander: Palmtop Bass: ON VIN=100mVrms f=100Hz VOL=-68dB BW=400Hz-30kHz VOL=Mute BW=400Hz-30kHz VLIM CT CS VIN VIN VIN 0 VIN ● Indicator Output Block (Ta=25°C, V+=3.3V, unless otherwise specified) PARAMETER High Input Voltage Low Input Voltage SYMBOL VOH VOL TEST CONDITION ISOURCE=1mA (pin 17, pin 18, pin 19) ISINK=1mA (pin 17, pin 18, pin 19) MIN. V *0.8 0 + TYP. - MAX. V + + UNIT V V V *0.2 [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. NJU7392 Ver.1.5_E_DS –3–