NJU7394 Pushbutton Interface EVR GENERAL DESCRIPTION The NJU7394 is a pushbutton interface electronic volume. It includes a electronic volume controller with differential input, attenuator function, some indicator and a stand-by function (Power-saving mode). The NJU7394 has also built-in push button interface for its volume UP/DOWN controls and power ON/OFF controls making application possible without the use of micro-controller. The NJU7394 is suitable for low power application and also for application without micro-controller such as mobile audio player and cradle speaker for mobile game. FEATURES • Operating Voltage • Low operating current PACKAGE OUTLINE NJU7394VC3 +2.7 to +5.5V 2mA typ. (Active mode) 1µA typ. (stand-by mode) • Pop-noise reduction • Quasi-differential input • Pushbutton interface EVR • Adjustable initial Volume • Attenuator / Soft MUTE Function • CMOS Technology • Package Outline +6 to -62dB, MUTE -6dB, -10dB, -14dB, -18dB -10dB, -15dB, -20dB, MUTE SSOP20 BLOCK DIAGRAM V+ Power indicator Power Button V+ V+ Volume indicator V+ Bias Power V+ SWMODE PWSW PWIND VOLIND IREF Power Contrel Logic Standby V+ VREF GND Bias STBY Input L Output L Attenuator Electric Volume Input G Bypass/Att. (-10dB, -15dB, -20dB, Mute) (+6dB to -62dB, Mute) Output R Input R Volume Control Logic ATTADJ VOLADJ ATT V Attenuate level adjuster -10,-15,-20dB,Mute RATT RINIT UP DOWN TEST + Initial volume adjuster -6,-10,-14,-18 dB Up Down V+ Test mode V+ Attenuator NJU7394 Ver.3.1 _E -1- NJU7394 PIN CONFIGURATION -2- 20 11 1 10 No. Symbol Function No Symbol Function 1 INL Lch Input 11 VOLIND Volume Indicator 2 ING Common Input 12 PWIND Power Indicator 3 INR Rch Input 13 VOLADJ Initial Volume Adjustor 4 SWMODE Control Mode Setting 14 AT TA D J Attenuator Adjustor 5 STBY Standby Setting 15 V+ Power Supply 6 AT T Attenuator Setting 16 GND Ground 7 PWSW Power Switch 17 IREF Reference Current 8 UP Volume Up Switch 18 OUTR Rch Output 9 DOWN Volume Down Switch 19 VREF Reference Voltage 10 TEST Test Terminal 20 OUTL Lch Output NJU7394 Ver.3.0_E NJU7394 ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL + Power Supply Voltage V Power Dissipation +7 V 540* mW + 2) VIMAX Operating Temperature Range UNIT 1) PD Maximum Input Voltage RATING 0 to V * Topr V -40 to +85 Storage Temperature Range Tstg -40 to +125 *1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting *2) Don’t apply the input voltage that exceeds supply voltage. o C o C ELECTRICAL RECOMMENDED OPERATING CONDITION (Ta=25°C) PARAMETER Operating Voltage SYMBOL V TEST CONDITION MIN. TYP. MAX. UNIT - 2.7 3.3 5.5 V MIN. TYP. MAX. UNIT - 2.0 3.0 mA - 0.1 1.0 µA 1.5 1.65 1.8 V + ELECTRICAL CHARACTERISTICS + ●DC CHARACTERISTICS (Ta=25°C, V =3.3V, unless otherwise specified) PARAMETER Operating Current Reference Voltage SYMBOL IDD1 TEST CONDITION No Signal, Active 3) IDD2 No Signal, Standby* VREF No signal *3) In case of the voltage of each terminal SWMODE, STBY, ATT, PWSW, UP, DOWN and TEST is “L”=0V. ●AC CHARACTERISTICS + (Ta=25°C, V =3.3V, VIN=500mVrms, f=1kHz, ATT: OFF, VOL: 6dB, unless otherwise specified) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Maximum Input Voltage VIM THD=1% BW=400Hz-30kHz 500 550 - mVrms Output Noise Voltage 1 VNO1 Rg=0Ω, A-weighted - -100 (10) -94 (20) dBV (µVrms) Output Noise Voltage 2 VNO2 Rg=0Ω, A-weighted VOL=-62dB - -100 (10) -94 (20) dBV (µVrms) THD+N VIN=250mVrms BW=400Hz-30kHz - 0.05 0.1 % 5.0 6.0 7.0 dB Total Harmonic Distortion Maximum Gain GVMAX Initial Volume 1 GVINIT1 Power-on state RINIT=0Ω -8.0 -6.0 -4.0 dB Initial Volume 2 GVINIT2 Power-on state RINIT=47kΩ -12.0 -10.0 -8.0 dB Initial Volume 3 GVINIT3 Power-on state RINIT=100kΩ -16.0 -14.0 -12.0 dB Initial Volume 4 GVINIT4 Power-on state RINIT=OPEN -20.0 -18.0 -16.0 dB Maximum Attenuate level GV-62 VOL=-62dB BW=400Hz-30kHz -64 -62 -60 dB Mute Level Mute VOL=MUTE BW=400Hz-30kHz - -90 -84 dB NJU7394 Ver.3.0_E -3- NJU7394 PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT ATT Level 1 GVATT1 ATT:ON RATT=0Ω -12.0 -10.0 -8.0 dB ATT Level 2 GVATT2 ATT:ON RATT=47kΩ -17.0 -15.0 -13.0 dB ATT Level 3 GVATT3 ATT:ON RATT=100kΩ -22.0 -20.0 -18.0 dB ATT Mute Level GVATT4 ATT:ON, RATT=OPEN BW=400Hz-30kHz - -100 -90 dB -1.0 0.0 1.0 dB 80 90 - dB Channel Balance GCB Channel Separation CS Rg=0Ω BW=400Hz-30kHz ● Indicator Output Block (Ta=25°C, V+=3.3V, unless otherwise specified) PARAMETER High Output Voltage Low Output Voltage SYMBOL VOH VOL TEST CONDITION ISOURCE=1mA (pin 11, pin 12) MIN. + V *0.8 ISINK=1mA (pin 11, pin 12) TYP. MAX. + - V + UNIT V 0 - V *0.2 V MIN. TYP. MAX. UNIT + ● Control Block (Ta=25°C, V =3.3V, unless otherwise specified) PARAMETER High Input Voltage SYMBOL VIH Low Input Voltage VIL Pull-Up Resistance RPULLUP Mode Resistance range 1/4 TEST CONDITION pin4, pin5, pin6, pin7, pin8, pin9 + V *0.8 + - V + V *0.2 V pin4, pin5, pin6, pin7, pin8, pin9 0 - V - 100 - kΩ RMODE1 pin 13, pin 14 0 - 20 kΩ Mode Resistance range 2/4 RMODE2 pin 13, pin 14 40 - 60 kΩ Mode Resistance range 3/4 RMODE3 pin 13, pin 14 90 - 110 kΩ Mode Resistance range 4/4 RMODE4 pin 13, pin 14 150 - ∞ kΩ Pulse Distinction Time 15 20 25 ms Auto Increment Distinction Time 0.8 1 1.2 S Auto Increment cycle 133 167 200 ms -4- NJU7394 Ver.3.0_E NJU7394 TERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT V+ Lch Input 1 Rch Input 1 50k Ω 10pF V+ IN1G V+ 1k Ω Common Input 1 V+/2 10pF 10pF 500k Ω 2 V+/2 V+/2 10pF IN1L IN1R V+ 50k Ω 1 3 TERMINAL DC VOLTAGE VREF V+ IN2L IN2R Lch Input 2 Rch Input 2 50k Ω 10pF V+/2 V+/2 10pF 50k Ω 4 5 V+ VREF V+ 6 8 17 18 19 28 30 31 32 EXOUTL EXOUTR BBIND EXIND PWIND BB1 BB3 OUTR OUTL NJU7394 Ver.3.0_E Stereo Expander Output L Stereo Expander Output R Bass Boost Indicator Stereo Expander Indicator Power Indicator Bass Boost Filter Terminal 1 Bass Boost Filter Terminal 3 Rch Output Lch Output V+ 52.5Ω + V /2 V+/2 0V or V+ 0V or V+ 0V or V+ V+/2 V+/2 V+/2 V+/2 -5- NJU7394 PIN NO. SYMBOL FUNCTION V+ 7 9 VOLINL VOLINR Volume Input L Volume Input R TERMINAL DC VOLTAGE EQUIVALENT CIRCUIT V+ V+ + V /2 V+/2 52.5Ω 50k Ω 50k Ω VREF V+ SELSW 52.5Ω Input Selector Setting 0V 100k Ω 10 V+ V+ PWSW UP DOWN TEST Power Switch Volume Up Switch Volume Down Switch Test Terminal Stereo Expander Switch Bass Boost Switch 52.5Ω 200k Ω EXSW BBSW V+ 200k Ω V+ 12 13 -6- 0V 0V 0V 0V 52.5Ω 100k Ω 11 14 15 16 V+ V+ V+/2 V+/2 NJU7394 Ver.3.0_E NJU7394 PIN NO. SYMBOL FUNCTION V+ 20 21 27 TREBLE SWMODE SENSE TERMINAL DC VOLTAGE EQUIVALENT CIRCUIT Treble Gain Setting Control Mode Setting Limiter Threshold Setting V+ V+ It 52.5Ω V+ 5k Ω V+ depends on a test circuit. 52.5Ω 5k Ω V+ V+ VREF Reference Voltage 24 V+ Power Supply 200k Ω 23 NJU7394 Ver.3.0_E 1.2V V+ 20k Ω Reference Current 52.5Ω V+/2 20k Ω IREF 200k Ω 22 V+ -7- NJU7394 PIN NO. SYMBOL FUNCTION 25 GND Ground 0V V+ 26 INT V+ 1k Ω Limiter Recovery Time Setting V+ 29 BB2 Bass Boost Filter Terminal 2 TERMINAL DC VOLTAGE EQUIVALENT CIRCUIT 0V V+ 1k Ω V+/2 1k Ω 10pF VREF -8- NJU7394 Ver.3.0_E NJU7394 PIN DESCRIPTION SWMODE (pin 4) PIN CONDITION FUNCTION L PWSW: Momentary SW mode. H PWSW: Toggle SW mode. Momentary SW mode data format High Mode Change [ ex. ON ] Mode Change [ ex. OFF ] Mode Change [ ex. ON ] Low Toggle SW mode data format High Mode Change [ ex. ON ] Mode Change [ ex. OFF ] Mode Change [ ex. ON ] Low STBY (pin 5) ●Toggle SW Mode PIN CONDITION FUNCTION L When SWMODE and PWSW are Low, IC becomes a standby mode. H When PWSW is High, IC becomes active mode. * The “Momentary SW mode” does not support. DOWN (pin 15) ●Toggle SW Mode PIN CONDITION FUNCTION L Attenuator: OFF H Attenuator: ON * The “Momentary SW mode” does not support. PWSW (pin 7) ●Momentary SW mode setting PIN CONDITION FUNCTION OPEN(L)→H System status is changed to active mode and standby mode alternately. H→OPEN(L) No change. ●Toggle SW mode setting PIN CONDITION H OPEN(L) FUNCTION Active mode Standby Mode. NJU7394 Ver.3.0_E -9- NJU7394 UP (pin 8) ●Momentary SW mode setting PIN CONDITION FUNCTION OPEN(L)→H Volume setting is increased 1 step. Long push increase volume setting continuously. H→OPEN(L) No change. * The “Toggle SW mode” does not support. DOWN (pin 9) ●Momentary SW mode setting PIN CONDITION FUNCTION OPEN(L)→H Volume setting is decreased 1 step. Long push decrease volume setting continuously. H→OPEN(L) No change. * The “Toggle SW mode” does not support. TEST (pin 10) PIN CONDITION FUNCTION L Normal operation mode H Test mode. Do not use for normal operation. VOLADJ (pin 13) CONNECTED RESISTANCE FUNCTION 0Ω to 20kΩ Volume initial value: -6dB 40Ω to 60kΩ Volume initial value: -10dB 90kΩ to 110kΩ Volume initial value: -14dB 150kΩ to OPEN Volume initial value: -18dB ATTADJ (pin 14) CONNECTED RESISTANCE FUNCTION 0Ω to 20kΩ Attenuator initial value: -10dB 40Ω to 60kΩ Attenuator initial value: -15dB 90kΩ to 110kΩ Attenuator initial value: -20dB 150kΩ to OPEN Mute - 10 - NJU7394 Ver.3.0_E NJU7394 CONTROL DATA ●INITIAL CONDITION (POWER ON) FUNCTION TERMINAL Power Pin 7 Volume Pin 8, Pin 9 CONDITION Standby -6dB, -10dB, -14dB, -18dB ●Volume gain step setting Step No. Volume [dB] 0 MUTE 1 -62 2 -58 3 -54 4 -50 5 -46 6 -42 7 -39 8 -36 9 -33 10 -30 11 -28 12 -26 13 -24 14 -22 15 -20 16 -18(*) 17 -16 18 -14(*) 19 -12 20 -10(*) 21 -8 22 -6(*) 23 -4 24 -2 25 0 26 +1 27 +2 28 +3 29 +4 30 +5 31 +6 (*) NJU7394 Ver.3.0_E Initial Setting - 11 - NJU7394 ■ TIMING CHART (Momentary SW mode) ●Standby release (Standby mode Æ Active mode) PWSW (pin7) High Low or OPEN PWIND (pin12) 20ms High Low 280ms Output (pin18, pin20) 40ms + V /2 0V ●Standby (Active mode Æ Standby mode) PWSW (pin7) High Low or OPEN 20ms High PWIND (pin12) Low 40ms Output (pin18, pin20) 280ms V+/2 0V - 12 - NJU7394 Ver.3.0_E NJU7394 ■ TIMING CHART (Toggle SW mode) ●Standby release (Standby mode Æ Active mode) High PWSW (pin7) Low or OPEN PWIND (pin12) 20ms High Low 280ms Output (pin18, pin20) 40ms + V /2 0V ●Standby (Active mode Æ Standby mode) PWSW (pin7) High Low or OPEN 20ms High PWIND (pin12) Low 40ms Output (pin18, pin20) 280ms V+/2 0V NJU7394 Ver.3.0_E - 13 - NJU7394 ■ TIMING CHART (Volume UP/DOWN control) 1. Recognition condition of Volume UP/DOWN push button I/F 1-a.) The Volume UP/(DOWN) recognizes the data-command to the case that the DOWN(UP) button has not been pushed, besides that the UP(DOWN) button is pushed for the longer time than the “Pulse Distinction Time: 20ms". 1-b.) The Volume UP/(DOWN) recognizes the data-command to the case that the UP(DOWN) button has pushed earlier than the DOWN(UP) button, besides the UP(DOWN) button is pushed for the longer time than the “Pulse Distinction Time: 20ms". > Pulse Distinction Time (20ms typ.) Recognition > Pulse Distinction Time (20ms typ.) Recognition UP UP DOWN DOWN 1-a 1-b 2. Invalidity condition of Volume UP/DOWN push button I/F 2-a.) The Volume UP/(DOWN) does NOT recognize the data-command to the case that the UP(DOWN) button has pushed for the shorter time than the “Pulse Distinction Time: 20ms". (The Chattering prevention function operates.) 2-b.) The Volume UP/(DOWN) does NOT recognize the data-command to the case that the UP(DOWN) button has pushed for the shorter time than the “Pulse Distinction Time: 20ms" after released button. (The Chattering prevention function operates.) 2-c.) The Volume UP/(DOWN) does NOT recognize the data-command to the case that the UP(DOWN) button has pushed before releasing DOWN(UP) button. < Pulse Distinction Time (20ms typ.) < Pulse Distinction Time (20ms typ.) UP UP UP DOWN DOWN DOWN 2-a - 14 - 2-b 2-c NJU7394 Ver.3.0_E NJU7394 ■ TIMING CHART (Volume UP/DOWN control) 3. Start condition of Volume UP/DOWN Auto increment function 3-a.) The Auto increment of volume UP(DOWN) is started to the case that the DOWN(UP) button has not been pushed, besides that the UP(DOWN) button is pushed for the longer time than the “Auto increment Distinction Time: 1s". > Auto increment Distinction Time (1s typ.) Auto increment starts UP DOWN 3-a 4. Stop condition of Volume UP/DOWN Auto increment function 4-a.) The Auto increment of volume UP(DOWN) is stopped to the case that the UP(DOWN) button has released for the longer time than the “Pulse Distinction Time: 20ms" for the Auto increment period. 4-b.) The Auto increment of volume UP(DOWN) is stopped to the case that the DOWN(UP) button has pushed for the Auto increment period. Auto increment Distinction Time (1s typ.) Increment start UP DOWN Auto increment Distinction Time (1s typ.) Increment start UP Increment stop 4-a NJU7394 Ver.3.0_E Pulse Distinction Time (20ms typ.) DOWN Increment stop 4-b - 15 - NJU7394 ■ APPLICATION CIRCUIT V+ Output L Output R V+ V+ PWIND VOLIND UP DOWN TEST 1 2 3 4 5 6 7 8 9 10 V+ PWSW 11 ATT 12 STBY 13 VOLADJ 14 ATTADJ 15 GND IREF 16 SWMODE OUTR 17 RINIT INR VREF 18 RATT ING 19 1µF 100k Ω INL 20 OUTL 1µF NJU7394 0.47µF V+ V+ V+ V+ V+ Input R Input G Input L 0.47µF 1µF [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. - 16 - NJU7394 Ver.3.0_E