NJW channel Electronic Volume with Input Selector

Transcription

1 4-channel Electronic Volume with Input Selector!GENERAL DESCRIPTION The NJW1191 is 4-channel Electronic Volume with input selector. It includes main volume, balance and fader trim, 4 inputs selector, loudness and tone control. The NJW1191 performs low noise and low distortion characteristics with resistance ladder type electrical volume. All of internal status and variables are controlled by I 2 C BUS interface.!package OUTLINE!FEATURES Operating Voltage I 2 C BUS Interface Low Output Noise Low Distortion 4ch Input Selector Loudness Tone Control Main Volume Balance & Fader Bi-CMOS Technology Package Outline!BLOCK DIAGRAM 7.5 to 13V -3dBV typ..1% typ. Bass / Treble SSOP32 NJW1191V Tone db,6db,12db,18db I 2 C Interface Tone db,6db,12db,18db Bias 1

2 !PIN FUNCTION No. SYMBOL FUNCTION No. SYMBOL FUNCTION 1 Ground 17 SDA I 2 C Data Input / Acknowledge Output 2 VREF Reference Voltage 18 RL_OUT Lch Rear Vol. Output 3 IN1R Rch Input 1 19 FL_OUT Lch Front Vol. Output 4 IN2R Rch Input 2 2 VOL2IN_L Lch 2 nd Vol. Input 5 IN3R Rch Input 3 21 TONEOUT_L Lch Tone Output 6 IN4R Rch Input 4 22 DCCL Lch Tone Bass DC cut Capacitor 7 TAP1R Rch Loudness High Freq. Time Constant 23 TLCL Lch Tone Bass Time Constant 8 TAP2R Rch Loudness Low Freq. Time Constant 24 THCL Lch Tone Treble Time Constant 9 THCR Rch Tone Treble Time Constant 25 TAP2L Lch Loudness Low Freq. Time Constant TLCR Rch Tone Bass Time Constant 26 TAP1L Lch Loudness High Freq. Time Constant 11 DCCR Rch Tone Bass DC cut Capacitor 27 IN4L Lch Input 4 12 TONEOUT_R Rch Tone Output 28 IN3L Lch Input 3 13 VOL2IN_R Rch 2 nd Vol. Input 29 IN2L Lch Input 2 14 FR_OUT Rch Front Vol. Output 3 IN1L Lch Input 1 15 RR_OUT Rch Rear Vol. Output 31 N.C No Connect 16 SCL I 2 C Clock Input 32 V Power Supply 2

3 !ABSOLUTE MAXIMUM RATING (Ta=25 C) PARAMETER SYMBOL RATING UNIT Supply Voltage V 15 V Power Dissipation P D 8 NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting mw Operating Temperature Range Topr -4 to 85 C Storage Temperature Range Tstg -4 to 125 C!ELECTRICAL CHARACTERISTICS ( Ta=25 C, V=9V, R g=6ω, R L=47kΩ, Vin=1.5Vrms,f=1kHz, all controls flat(gv=db) unless otherwise specified) PARAMETER SYMBOL Condition MIN. TYP. MAX. UNIT Operating Voltage V V Supply Current I CC No Signal ma Reference Voltage V REF No Signal V Maximum Input Voltage Maximum Output Voltage 1 Maximum Output Voltage 2 Voltage Gain 1 V IM VOL1=-2dB THD=1% Vrms V OM1 THD=1% Vrms V OM2 THD=1%, f=5khz Vrms G V1 VOL1=dB, AMP GAIN=18dB Vin=.1Vrms db Voltage Gain 2 G V2-1 1 db Voltage Gain 3 G V3 VOL1=-68dB db Voltage Gain 4 G V4 VOL2FL,FR,BL,BR=-42dB db Mute Level Mute VOL2FL,FR,BL,BR=Mute Filter : 4Hz to 3kHz db Channel Balance G CB -1 1 db Total Harmonic Distortion THD BW : 4Hz to 3kHz % Output Noise Voltage 1 V NO1 Rg=Ω, Filter : A-weighted (7) -9 (32) dbv (µvrms) dbv (µvrms) Output Noise Voltage 2 V NO2 VOL2FL,FR,BL,BR=Mute Rg=Ω, Filter : A-weighted - (4) (17.8) Selected Input : No signal Rg=Ω Cross Talk CT Unselected Input : Input signal 9 - db Filter : 4Hz to 3kHz Channel Separation CS Rg=Ω, Filter : 4Hz to 3kHz 9 - db LOUDNESS Maximum Low Boost Level G LDL Loudness=ON,VOL1=-24dB,f=4Hz db Maximum High Boost Level G LDH Loudness=ON,VOL1=-24dB,f=kHz db TONE Treble Boost Level G HBST BCT= 1,TREB= 111, f=khz Vin=.1Vrms db Treble Flat Level G HFLT TREB=,f=kHz db Treble Cut Level G HCUT BCT=,TREB= 111, f=khz db Bass Boost Level G LBST BCB= 1,BASS= 111, f=hz Vin=.1Vrms db Bass Flat Level G LFLT BASS=,f=Hz db Bass Cut Level G LCUT BCB=,BASS= 111, f=hz db 3

4 !TIMING ON THE I 2 C BUS (SDA,SCL) SDA t f t r t SU:DAT t f t HD:STA t SP t r t BUF SCL t HD:STA t SU:STA t SU:STO S t LOW t HD:DAT t HIGH Sr P S!CHARACTERISTICS OF I/O STAGES FOR I2C BUS (SDA,SCL) I 2 C BUS Load Conditions STANDARD MODE : Pull up resistance 4kΩ (Connected to 5V), Load capacitance 2pF (Connected to ) PARAMETER SYMBOL Standard mode MIN. TYP. MAX. UNIT Low Level Input Voltage V IL V High Level Input Voltage V IH V Low level output voltage (3mA at SDA pin) V OL -.4 V Input current each I/O pin with an input voltage between.1v DD and.9v DDmax I i - - µa 4

5 !CHARACTERISTICS OF BUS LINES (SDA,SCL) FOR I 2 C-BUS DEVICES PARAMETER SYMBOL Standard mode MIN. TYP. MAX. UNIT SCL clock frequency f SCL - - khz Hold time (repeated) START condition. t HD:STA µs Low period of the SCL clock t LOW µs High period of the SCL clock t HIGH µs Set-up time for a repeated START condition t SU:STA µs Data hold time NOTE) t HD:DAT - - µs Data set-up time t SU:DAT ns Rise time of both SDA and SCL signals t r - - ns Fall time of both SDA and SCL signals t f ns Set-up time for STOP condition t SU:STO µs Bus free time between a STOP and START condition t BUF µs Capacitive load for each bus line C b pf Noise margin at the Low level V nl V Noise margin at the High level V nh V C b ; total capacitance of one bus line in pf. NOTE). Data hold time : t HD:DAT Please hold the Data Hold Time (t HD:DAT) to 3ns or more to avoid status of unstable at SCL falling edge. The SDA block in the NJW1191 does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not providing a hold time of at least 3nsec for the SDA in the master device. The time-consists of the data-delay-circuit of the SDA terminal are as follows. (a) Low level! High level : (b) High level! Low level : T HL R D*C D T LH R P*C D In addition, Schottky barrier diode (SBD) influences a Low level at the Acknowledge. Therefore choose the low forward voltage (Vf) as much as possible. V DD R P R P SCL MASTER SBD SDA NJW1191 R D C D 5

6 !APPLICATION CIRCUIT C25 µf C7 nf R2 C1 µf C2 1µF C3 1µF C4 1µF C5 1µF C6 47pF R1 39kΩ 4.7kΩ C8 4.7nF C9 nf VREF INPUT SELECTOR MASTER VOLUME & LOUDNESS TONE CONTROL BIAS INPUT SELECTOR MASTER VOLUME & LOUDNESS TONE CONTROL V V C24 1µF C23 1µF C22 1µF C21 1µF C21 47pF R8 39kΩ C2 nf R7 C19 4.7nF 4.7kΩ C18 nf R3 2.2kΩ C 4.7µF 11 C17 4.7µF 22 R6 2.2kΩ C µF C16 1µF C12 µf C13 µf R4 Ω FRONT VOLUME REAR VOLUME I 2 C BUS INTERFACE FRONT VOLUME REAR VOLUME SCL SDA C15 µf C14 µf R5 Ω!APPLICATION NOTES Pin No. Function Note 2 VREF 3-6, 27-3 Inputs 7,8,25,26 9,,11,22,23, 24 Loudness filter Taps Tone filter terminals C1 can be adjusted rise and fall time of reference voltage at power on and off. Take care that the reduced C1makes sensitive to ripple of power supply. The Input impedance is designed about 48k ohms. The ground line should be inserted between each input lines to avoid cross talk. Loudness frequency can be adjusted with external parts(see page 6). Especialy, 8 and 25 pins should be kept from large signal lines such as digital signal lines or the other sound signal lines to avoid digitaly noise or cross talk in Loudness mode. Tone Bass and Treble cut off frequency can be adjusted with external parts(see page6). These pins should be kept from large signal lines such as digital signal lines or the other sound signal lines to avoid the digitaly noise or cross talk. 12,21 Tone outputs Output impedance is designed about 5 ohms. 13,2 Balance Fedar Input impedance is designed about 24k ohms. volume inputs 14,15,18,19 Balance Fedar volume outputs Output impedance is designed about 5 ohms. 16,17 I 2 C control signal ports These terminals should be inserted resistance about ohms between terminal and signal source to reduce the digitaly noise. These lines should be kept from analog signal lines and or near by the chip to avoid digitaly noise. Inserted ground line between analog line and digital line should be recommended. 6

7 !APPLICATION NOTES < Loudness fc adjustment > Loudness High and Low Boost cut off frequencies are able to adjust with the external parts as shown in fig.a. They are given by the functions below. C e1 (C6, C21) TAP1 (7, 26pin) MASTER VOLUME & LOUDNESS High Boost cut off frequency: f ch = 2 π R C e1 1 e1 (Hz) R e1 (R1, R8) TAP2 (8, 25pin) Low Boost cut off frequency: f cl = 2 π R C e2 1 e2 (Hz) R e2 (R2, R7) C e2 (C7, C2) <NOTE> R e2 should be fixed to 4.7kΩ for the precise level of volume in Loudness mode. < Tone fc adjustment > fig. A Loudness circuit Tone High and Low cut off frequencies are able to adjust with the external parts as shown in fig.b. They are given by the functions below.. R 3A R 3B (R 3A R 3B = 33kΩ) THC (9, 24pin) TLC (, 23pin) (Boost) R 4A R 4B C e3 C e4 C e5 (C8, C19) (C9, C18) (C, C17) R e3 (R3, R6) (R 4A R 4B = 33kΩ) DCC (11, 22pin) Treble cut off frequency: f ct= Bass cut off frequency: f cbl= DC cut off frequency: f cdc= 1 2πR C 3B e3 4A (Hz) (R4B Re3 ) 2π ( R R ) R 4B e3 (R 3B=5.5kΩ at 14dB set) 4B 1 2π ( R R ) C e5 e3 C (Hz) e4 (Hz) (R 4B=3.3kΩ at 14dB set) R 3A R 4A R 3B (R 3A R 3B = 33kΩ) R 4B (R 4A R 4B = 33kΩ) THC (9, 24pin) TLC (, 23pin) DCC (11, 22pin) C e3 C e4 C e5 (C8, C19) (C9, C18) (C, C17) R e3 (R3, R6) (Cut) fig. B Tone circuit 7

8 !TERMINAL DESCRIPTION No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE V 2 VREF Reference Voltage V/2 2k 2k V IN1R IN2R IN3R IN4R IN1L IN2L IN3L IN4L Rch Input 1 Rch Input 2 Rch Input 3 Rch Input 4 Lch Input 1 Lch Input 2 Lch Input 3 Lch Input k 3k VREF V/2 V 7 26 TAP1R TAP1L Rch Loudness High Freq. Time Constant Lch Loudness High Freq. Time Constant 5 V/2 V 8 25 TAP2R TAP2L Rch Loudness Low Freq. Time Constant Lch Loudness Low Freq. Time Constant 5 VREF V/2 4.7k VREF 8

9 !TERMINAL DESCRIPTION No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE V 9 24 THCR THCL Rch Tone Treble Time Constant Lch Tone Treble Time Constant 5 5k 1.8k V/2 V 23 TLCR TLCL Rch Tone Bass Time Constant Lch Tone Bass Time Constant k 5.4k V/2 V DCCR DCCL Rch Tone Bass DC cut Capacitor Lch Tone Bass DC cut Capacitor 5 3k 2k V/2 V TONEOUT_R TONEOUT_L Rch Tone Output Lch Tone Output 5 V/2 3k 6k 7k 9

10 !TERMINAL DESCRIPTION No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE V 13 2 VOL2IN_R VOL2IN_L Rch 2 nd Vol. Input Lch 2 nd Vol. Input 7 12k 2.5k V/2 7 12k 2.5k V FR_OUT RR_OUT RL_OUT FL_OUT Rch Front Vol. Output Rch Rear Vol. Output Lch Front Vol. Output Lch Rear Vol. Output 5 V/2 k VREF k 16 SCL I 2 4k C Clock Input - 12k 17 SDA I 2 C Data Input / Acknowledge Output 4k 12k -

11 !DEFINITION OF I 2 C REGISTER I 2 C BUS FORMAT MSB LSB MSB LSB MSB LSB S Slave Address A Select Address A Data A P 1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit S: Starting Term A: Acknowledge Bit P: Ending Term SLAVE ADDRESS Slave Address MSB LSB - Hex 1 8(h) CONTROL REGISTER TABLE The select address sets each function (Volume, Loudness, Balance, Fader, Tone Control, Input Selector). The auto increment function cycles the select address as follows. H 1H 2H 3H 4H H <Write Mode> Select BIT Address D7 D6 D5 D4 D3 D2 D1 D H Amp Gain VOL1 1H VOL2FL (Front Left) VOL2FR (Front Right) 2H VOL2RL (Rear Left) VOL2RR (Rear Right) 3H BCB Tone Bass BCT Tone Treble 4H FLMute FRMute RLMute RRMute Input Selector Loudness Test * * Test : Set D= in usually. (For device check use only) CONTROL REGISTER DEFAULT VALUE Control register default value is all. Select BIT Address D7 D6 D5 D4 D3 D2 D1 D H 1H 2H 3H 4H 11

12 !INSTRUCTION CODE a) MAIN VOLUME (VOL1,Amp Gain) SETTING Select BIT Address D7 D6 D5 D4 D3 D2 D1 D H Amp Gain VOL1 Amp Gain : db, 6dB, 12dB, 18dB VOL1 : Volume 1 Attenuator setting to 3dB (1dB/Step),-3 to 68dB (2dB/Step),Mute b) BALANCE, FADER VOLUME (VOL2FL,FR,RL,RR ) SETTING Select BIT Address D7 D6 D5 D4 D3 D2 D1 D 1H VOL2FL VOL2FR 2H VOL2RL VOL2RR VOL2FL,FR,RL,RR :,-2,-4,-6,-8,-,-12,-16,-18,-2,-24,-32,-34,-36,-38,-42 db c) TONE SETTING Select BIT Address D7 D6 D5 D4 D3 D2 D1 D 3H BCB TONE BASS BCT TONE TREBLE BCB : Boost cut select for Bass control : Cut 1 : Boost TONE BASS : BASS Level Setting Cut Level : -14 to db(2db/step) Boost Level : to 14dB(2dB/Step) BCT : Boost cut select for Treble control : Cut 1 : Boost TONE TREBLE : TREBLE Level Setting Cut Level : -14 to db(2db/step) Boost Level : to 14dB(2dB/Step) d) INPUT SELECTOR SETTING Select BIT Address D7 D6 D5 D4 D3 D2 D1 D 4H FLMute FRMute RLMute RRMute Input Selector Loudness Test FLMute, FRMute, RLMute, RRMute : VOL2FL,FR,RL,RR Mute Input Selector: INPUT1 to 4 Loudness : Loudness ON/OFF Test : For device check use only. Set D = in usual. 12

13 !VOL1(Select Address : H) VOL1 Gain(dB) D5 D4 D3 D2 D1 D Mute 13

14 !AMP GAIN (Select Address : H) AMP GAIN Gain(dB) D7 D !VOL2 FL,FR (Select Address : 1H) VOL2 RL,RR (Select Address : 2H) : Front Channel : Rear Channel Gain(dB) VOL2 Lch D7 D6 D5 D4 Rch D3 D2 D1 D !TONE (Select Address : 3H) Cut/Boost Select BCB D7 BCT D3 Cut Boost 1 TONE BASS D6 D5 D4 Cut Boost TONE TREBLE Gain(dB) Gain(dB) D2 D1 D

15 !VOL2 MUTE (Select Address : 4H) Mute Setting FL Mute D7 FR Mute D6 RL Mute D5 RR Mute D4 Mute Active 1!INPUT SELECTOR (Select Address : 4H) Input Selector D3 D2 INPUT 1 INPUT 2 1 INPUT 3 1 INPUT 4 1 1!LOUDNESS (Select Address : 4H) Loudness Setting Loudness D1 OFF ON 1!TEST (Select Address : 4H) * FOR DEVICE CHECK USE ONLY. Test D Normal Test Mode 1 15

16 ! TYPICAL CHARACTERISTICS Operating Current vs. Ambient Temperature V=9V Operating Current vs. Operating Voltage C Operating Current [ma] Operating Current [ma] C -4 C Ambient Temperature [ C] 5 15 Operating Voltage [V] 4.7 Reference Voltage vs. Ambient Temperature V=9V PSRR vs. Frequency V=9V1Vrms - Reference Voltage [V] PSRR [db] Ambient Temperature [ C] - 1K K K Frequency [Hz] Maximum Input Voltage vs. Ambient Temperature Input : L1, Output : FL, VOL1=-2dB, THD=1% Maximum Output Voltage vs. Frequency Input : L1, Output : FL,RL, THD=1% Maximum Input Voltage [Vrms] Maximum Output Voltage [Vrms] C, 25 C 85 C Ambient Temperature [ C]. 1K K K Frequency [Hz] 16

17 ! TYPICAL CHARACTERISTICS 4. Maximum Output Voltage vs. Ambient Temperature Input : L1, Output : FL, THD=1% 4. Maximum Output Voltage vs. Ambiemt TEmperature Input : L1, Output : FL, f=5khz, THD=1% Maximum Output Voltage [Vrms] Maximum Output Voltage [Vrms] Ambient Temperature [ ] Ambient Temperature [ ] 4 2 Voltage Gain vs. Frequency Input : L1, Output : FL, BW:Hz-8kHz GAIN=18dB 4 2 Voltage Gain vs. Frequency Input : L1, Output : FL, BW:Hz-8kHz VOL2=dB Voltage GAin [db] VOL1=dB VOL1=-68dB Voltage Gain [db] VOL2=-42dB -8-8 VOL2=MUTE - VOL1=MUTE K K K Frequnency [Hz] -12 1K K K Frequnency [Hz] -8 Voltage Gain vs. Volume Set Level Input : L1, Output : FL, Control: VOL1-5 Voltage Gain vs. Volume Set Level Input : L1, Output : FL, Control: VOL C, 25 C, 85 C Voltage Gain [db] C, 25 C, 85 C Voltage Gain [db] Volume Set Level [db] Volume Set Level [db]

18 ! TYPICAL CHARACTERISTICS THDN vs. Input Voltage Input : L1, Output : FL, BW:Hz-8kHz THDN vs. Input Voltage Input : L1, Output : FL, BW:4Hz-3kHz 1 1 VOL1=-12dB 2Hz THDN [%].1 2kHz,5kHz THDN [%].1 VOL1=-18dB.1.1 VOL1=-6dB 1kHz Input Voltage [Vrms] VOL1=dB Input Voltage [Vrms] THDN vs. Ambient Temperature Input : L1, Output : FL, BW:4-3kHz THDN vs. Frequency Input : L1, Output : FL THDN [%].1.1 Vin=1Vrms Vin=1.5Vrms THDN [%] -4 C, 25 C.1.1 Vin=.5Vrms 85 C Ambient Temperature [ C].1 1K K K Frequency [Hz] THDN vs. Input Voltage Input : L1, Output : FL, BW:4Hz-3kHz Output Noise Voltage vs. Ambient Tempereture Input : L1, Output : FL, Rg=Ω, A-w eighted 3 25 THDN [%] C 85 C Output Noise Voltage [µvrms] 2 15 VOL1=VOL2=dB C Input Voltage [Vrms] VOL2=MUTE Ambient Temperature[ ] 18

19 ! TYPICAL CHARACTERISTICS Cross Talk vs. Ambient Temperature Input : L1, Output : FL, Rg=Ω, BW:4Hz-3kHz Cross Talk vs. Frequency Input : L2,L3,L4, Output : FL, Rg=Ω, BW:Hz-8kHz Cross Talk [db] Cross Talk [db] C, 25 C, 85 C Ambient Temperature[ ] 2 Frequency [Hz] 12 Channel Separation vs. Ambient Temperature Input : L1, Output : FL, Rg=Ω, BW:4Hz-3kHz 12 Channel Separation vs. Frequency Input : R1, Output : FL, Rg=Ω, BW:Hz-8kHz 1 1 Channel Separation [db] Channel Separation [db] C, 25 C, 85 C Ambient Temperature [ ] 2 1K K K frequency [Hz] Voltage Gain [db] Voltage Gain vs. Ambient Temperature (LOUDNESS) Input : L1, Output : FL, Loudness=ON, VOL1=-24dB f =khz f =4Hz Ambient Temperature [ ] Voltage Gain [db] Voltage Gain vs. Frequency (LOUDNESS) Input : L1, Output : FL, Loudness=ON VOL1=-3dB VOL1=dB VOL1=-dB VOL1=-2dB -35 1K K K Frequency [Hz] 19

20 ! TYPICAL CHARACTERISTICS Voltage Gain vs. frequency (LOUDNESS) Input : L1, Output : FL, Loudness=ON, VOL1=-24dB 2 15 Voltage Gain vs. Frequency (TONE) Input : L1, Output : FL BASS=TREBLE=14dB Ta=-4 C, 25 C, 85 C -5 Voltage Gain [db] C Voltage Gain [db] 5-5 BASS=TREBLE=dB Ta=-4 C, 25 C, 85 C C 25 C -25 1K K K Frequency [Hz] -15 BASS=TREBLE=-14dB Ta=-4 C, 25 C, 85 C -2 1K K K Frequency [Hz] Voltage Gain vs. Frequency (BASS) Input : L1, Output : FL, Vin=.1Vrms Voltage Gain vs. Frequency (TREBLE) Input : L1, Output : FL, Vin=.1Vrms 2 15 BASS=14dB 2 15 TREBLE=14dB Voltage Gain [db] 5-5 BASS=dB Voltage Gain [db] TREBLE=dB -15 BASS=-14dB -2 1K K K Frequency [Hz] -15 TREBLE=-14dB -2 1K K K Frequency [Hz] THDN vs. Volume Set Level 1 THDN [%].1 2kHz 2Hz.1 1kHz !NOTE Volume Set Level [db] 2

21 [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. 21