NJU7394

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. PACKAGE OUTLINE NJU7394VC3 FEATURES • Operating Voltage • Low operating current • Pop-noise reduction • Quasi-differential input • Pushbutton interface EVR • Adjustable initial Volume • Attenuator / Soft MUTE Function • CMOS Technology • Package Outline BLOCK DIAGRAM +2.7 to +5.5V 2mA typ. (Active mode) 1µA typ. (stand-by mode) +6 to -62dB, MUTE -6dB, -10dB, -14dB, -18dB -10dB, -15dB, -20dB, MUTE SSOP20 Power Button V+ V+ Power indicator V+ Volume indicator V+ Bias Power V+ SWMODE PWSW PWIND VOLIND IREF V+ VREF GND Standby STBY Power Contrel Logic Bias Input L Output L Input G Electric Volume (+6dB to -62dB, Mute) Attenuator Bypass/Att. (-10dB, -15dB, -20dB, Mute) Output R Input R Volume Control Logic ATTADJ VOLADJ ATT UP DOWN TEST V Attenuate level adjuster -10,-15,-20dB,Mute Initial volume adjuster -6,-10,-14,-18 dB + RATT RINIT Up Down V+ Test mode V+ Attenuator NJU7394 Ver.3.1 _E -1- NJU7394 PIN CONFIGURATION 20 11 1 No. 1 2 3 4 5 6 7 8 9 10 Symbol INL ING INR SWMODE STBY AT T PWSW UP DOWN TEST Function Lch Input Common Input Rch Input Control Mode Setting Standby Setting Attenuator Setting Power Switch Volume Up Switch Volume Down Switch Test Terminal No 11 12 13 14 15 16 17 18 19 20 Symbol VOLIND PWIND VOLADJ AT TA D J V+ GND IREF OUTR VREF OUTL 10 Function Volume Indicator Power Indicator Initial Volume Adjustor Attenuator Adjustor Power Supply Ground Reference Current Rch Output Reference Voltage Lch Output -2- NJU7394 Ver.3.0_E NJU7394 ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER Power Supply Voltage Power Dissipation Maximum Input Voltage Operating Temperature Range Storage Temperature Range SYMBOL V + RATING +7 540* 1) UNIT V mW V o o PD VIMAX Topr 0 to V * + 2) -40 to +85 C C 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. 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 3) MIN. 1.5 TYP. 2.0 0.1 1.65 MAX. 3.0 1.0 1.8 UNIT mA µA V *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 THD=1% BW=400Hz-30kHz Rg=0Ω, A-weighted Rg=0Ω, A-weighted VOL=-62dB VIN=250mVrms BW=400Hz-30kHz MIN. TYP. MAX. UNIT Maximum Input Voltage Output Noise Voltage 1 Output Noise Voltage 2 Total Harmonic Distortion Maximum Gain Initial Volume 1 Initial Volume 2 Initial Volume 3 Initial Volume 4 Maximum Attenuate level Mute Level VIM VNO1 VNO2 THD+N GVMAX GVINIT1 GVINIT2 GVINIT3 GVINIT4 GV-62 Mute 500 5.0 550 -100 (10) -100 (10) 0.05 6.0 -6.0 -10.0 -14.0 -18.0 -62 -90 -94 (20) -94 (20) 0.1 7.0 -4.0 -8.0 -12.0 -16.0 -60 -84 mVrms dBV (µVrms) dBV (µVrms) % dB dB dB dB dB dB dB Power-on state RINIT=0Ω Power-on state RINIT=47kΩ Power-on state RINIT=100kΩ Power-on state RINIT=OPEN VOL=-62dB BW=400Hz-30kHz VOL=MUTE BW=400Hz-30kHz -8.0 -12.0 -16.0 -20.0 -64 - NJU7394 Ver.3.0_E -3- NJU7394 PARAMETER SYMBOL TEST CONDITION ATT:ON RATT=0Ω ATT:ON RATT=47kΩ ATT:ON RATT=100kΩ ATT:ON, RATT=OPEN BW=400Hz-30kHz MIN. TYP. MAX. UNIT ATT Level 1 ATT Level 2 ATT Level 3 ATT Mute Level Channel Balance Channel Separation GVATT1 GVATT2 GVATT3 GVATT4 GCB CS -12.0 -17.0 -22.0 -1.0 -10.0 -15.0 -20.0 -100 0.0 90 -8.0 -13.0 -18.0 -90 1.0 - dB dB dB dB dB dB Rg=0Ω BW=400Hz-30kHz 80 ● 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) ISINK=1mA (pin 11, pin 12) MIN. V *0.8 0 + TYP. - MAX. V + + UNIT V V V *0.2 + ● Control Block (Ta=25°C, V =3.3V, unless otherwise specified) PARAMETER High Input Voltage Low Input Voltage Pull-Up Resistance Mode Resistance range 1/4 Mode Resistance range 2/4 Mode Resistance range 3/4 Mode Resistance range 4/4 Pulse Distinction Time Auto Increment Distinction Time Auto Increment cycle SYMBOL VIH VIL RPULLUP RMODE1 RMODE2 RMODE3 RMODE4 TEST CONDITION pin4, pin5, pin6, pin7, pin8, pin9 pin4, pin5, pin6, pin7, pin8, pin9 pin 13, pin 14 pin 13, pin 14 pin 13, pin 14 pin 13, pin 14 MIN. V *0.8 0 0 40 90 150 15 0.8 133 + TYP. 100 20 1 167 MAX. V + + UNIT V V kΩ kΩ kΩ kΩ kΩ ms S ms V *0.2 20 60 110 ∞ 25 1.2 200 -4- NJU7394 Ver.3.0_E NJU7394 TERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION V+ EQUIVALENT CIRCUIT V+ TERMINAL DC VOLTAGE 1 3 IN1L IN1R Lch Input 1 Rch Input 1 50k Ω 10pF 50k Ω 10pF V+/2 V+/2 V+ V+ 2 IN1G Common Input 1 500k Ω 1k Ω 10pF V+/2 VREF V+ 10pF V+ 4 5 IN2L IN2R Lch Input 2 Rch Input 2 50k Ω 10pF V+/2 V+/2 50k Ω VREF V+ 10pF V+ + V /2 V+/2 0V or V+ 0V or V+ 0V or V+ V+/2 V+/2 V+/2 V+/2 6 8 17 18 19 28 30 31 32 EXOUTL EXOUTR BBIND EXIND PWIND BB1 BB3 OUTR OUTL 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 52.5Ω NJU7394 Ver.3.0_E -5- NJU7394 PIN NO. SYMBOL FUNCTION V+ EQUIVALENT CIRCUIT V+ V+ TERMINAL DC VOLTAGE 7 9 VOLINL VOLINR Volume Input L Volume Input R 52.5Ω 50k Ω + V /2 V+/2 V+ 50k Ω VREF V+ 10 SELSW Input Selector Setting 52.5Ω 100k Ω 0V V+ V+ V+ V+ 100k Ω 11 14 15 16 PWSW UP DOWN TEST Power Switch Volume Up Switch Volume Down Switch Test Terminal 52.5Ω 0V 0V 0V 0V V+ 200k Ω 12 13 EXSW BBSW Stereo Expander Switch Bass Boost Switch 52.5Ω -6- 200k Ω V+/2 V+/2 NJU7394 Ver.3.0_E NJU7394 PIN NO. SYMBOL FUNCTION V+ EQUIVALENT CIRCUIT V+ V+ TERMINAL DC VOLTAGE 20 21 27 TREBLE SWMODE SENSE Treble Gain Setting Control Mode Setting Limiter Threshold Setting 52.5Ω It depends on a test circuit. V+ V+ 22 IREF Reference Current 52.5Ω 5k Ω 5k Ω 1.2V V+ V+ V+ 200k Ω 20k Ω 23 VREF Reference Voltage 200k Ω 20k Ω 52.5Ω V+/2 24 V+ Power Supply V+ NJU7394 Ver.3.0_E -7- NJU7394 PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT TERMINAL DC VOLTAGE 25 GND Ground 0V V+ V+ 26 INT Limiter Recovery Time Setting 1k Ω 0V V+ V+ 29 BB2 Bass Boost Filter Terminal 2 1k Ω 10pF 1k Ω V+/2 VREF -8- NJU7394 Ver.3.0_E NJU7394 PIN DESCRIPTION SWMODE (pin 4) PIN CONDITION L H PWSW: Momentary SW mode. PWSW: Toggle SW mode. FUNCTION Momentary SW mode data format High Low Mode Change [ ex. ON ] Mode Change [ ex. OFF ] Mode Change [ ex. ON ] Toggle SW mode data format Mode Change [ ex. ON ] Mode Change [ ex. OFF ] Mode Change [ ex. ON ] High Low STBY (pin 5) ●Toggle SW Mode PIN CONDITION L H FUNCTION When SWMODE and PWSW are Low, IC becomes a standby mode. When PWSW is High, IC becomes active mode. * The “Momentary SW mode” does not support. DOWN (pin 15) ●Toggle SW Mode PIN CONDITION L H Attenuator: OFF Attenuator: ON * The “Momentary SW mode” does not support. PWSW (pin 7) ●Momentary SW mode setting PIN CONDITION OPEN(L)→H H→OPEN(L) FUNCTION System status is changed to active mode and standby mode alternately. No change. FUNCTION ●Toggle SW mode setting PIN CONDITION H OPEN(L) Active mode Standby Mode. FUNCTION NJU7394 Ver.3.0_E -9- NJU7394 UP (pin 8) ●Momentary SW mode setting PIN CONDITION OPEN(L)→H H→OPEN(L) FUNCTION Volume setting is increased 1 step. Long push increase volume setting continuously. No change. * The “Toggle SW mode” does not support. DOWN (pin 9) ●Momentary SW mode setting PIN CONDITION OPEN(L)→H H→OPEN(L) FUNCTION Volume setting is decreased 1 step. Long push decrease volume setting continuously. No change. * The “Toggle SW mode” does not support. TEST (pin 10) PIN CONDITION L H VOLADJ (pin 13) CONNECTED RESISTANCE 0Ω to 20kΩ 40Ω to 60kΩ 90kΩ to 110kΩ 150kΩ to OPEN ATTADJ (pin 14) CONNECTED RESISTANCE 0Ω to 20kΩ 40Ω to 60kΩ 90kΩ to 110kΩ 150kΩ to OPEN Attenuator initial value: -10dB Attenuator initial value: -15dB Attenuator initial value: -20dB Mute FUNCTION Volume initial value: -6dB Volume initial value: -10dB Volume initial value: -14dB Volume initial value: -18dB FUNCTION Normal operation mode Test mode. Do not use for normal operation. FUNCTION - 10 - NJU7394 Ver.3.0_E NJU7394 CONTROL DATA ●INITIAL CONDITION (POWER ON) FUNCTION Power Volume TERMINAL Pin 7 Pin 8, Pin 9 Standby -6dB, -10dB, -14dB, -18dB CONDITION ●Volume gain step setting Step No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Volume [dB] MUTE -62 -58 -54 -50 -46 -42 -39 -36 -33 -30 -28 -26 -24 -22 -20 -18(*) -16 -14(*) -12 -10(*) -8 -6(*) -4 -2 0 +1 +2 +3 +4 +5 +6 (*) Initial Setting NJU7394 Ver.3.0_E - 11 - NJU7394 ■ TIMING CHART (Momentary SW mode) ●Standby release (Standby mode PWSW (pin7) High Low or OPEN High Low 280ms Output (pin18, pin20) 40ms Active mode) 20ms PWIND (pin12) + V /2 0V ●Standby (Active mode PWSW (pin7) High Low or OPEN High PWIND (pin12) Low Standby mode) 20ms 40ms 280ms Output (pin18, pin20) V+/2 0V - 12 - NJU7394 Ver.3.0_E NJU7394 ■ TIMING CHART (Toggle SW mode) ●Standby release (Standby mode PWSW (pin7) High Low or OPEN High Low 280ms Output (pin18, pin20) 40ms Active mode) 20ms PWIND (pin12) + V /2 0V ●Standby (Active mode PWSW (pin7) High Low or OPEN High PWIND (pin12) Low 40ms 280ms Standby mode) 20ms Output (pin18, pin20) 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 DOWN 1-a UP DOWN 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 DOWN 2-a UP DOWN 2-b UP DOWN 2-c - 14 - 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.) UP DOWN 3-a 4. Stop condition of Volume UP/DOWN Auto increment function Auto increment starts 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.) Pulse Distinction Time (20ms typ.) Auto increment Distinction Time (1s typ.) Increment start Increment start UP DOWN Increment stop UP DOWN Increment stop 4-a 4-b NJU7394 Ver.3.0_E - 15 - NJU7394 ■ APPLICATION CIRCUIT V+ V+ Output R Output L V+ 1µF 100k Ω 1µF RATT RINIT 20 OUTL 19 VREF 18 OUTR 17 IREF 16 GND 15 V+ 14 ATTADJ 13 VOLADJ 12 PWIND 11 VOLIND [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. NJU7394 SWMODE PWSW DOWN STBY 1 2 3 4 5 6 7 8 9 0.47µF 1µF 0.47µF V+ V+ V+ V+ V+ - 16 - Input G Input R Input L TEST ATT ING INR INL UP 10 NJU7394 Ver.3.0_E