NJU Channels Electronic Volume PACKAGE OUTLINE
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1 Channels Electronic olume GENERAL DESCRIPTION The NJU73 is a channels I C electronic volume IC with external mute controls. PACKAGE OUTLINE The NJU73 has many characteristics that are useful in audio application, such as low noise, low distortion, and wide operating voltage range. All functions are controlled by I C BUS interface. FEATURES Operating oltage + =.5.5 Input Gain db/+3db/+db/+9db olume ~-95dB/Mute,dBstep Low Distortion.% typ. Low Noise.µrms typ. External Mute Zero Cross Detection I C BUS Control CMOS Technology Small Package SSOP BLOCK DIAGRAM PIN CONFIGURATION SSOP IN IN IN3 IN MUTE SDA SCL I C ref Zero Cross Detection OUT OUT OUT3 OUT No. Symbol Function IN Input Terminal IN Input Terminal 3 IN3 Input Terminal 3 IN Input Terminal 5 MUTE Mute Terminal SDA I C Data Input Terminal /Acknowledge Output 7 SCL I C Clock Terminal 8 + Power Supply Terminal 9 REF Reference oltage Terminal GND Ground Terminal OUT Output Terminal OUT3 Output Terminal 3 3 OUT Output Terminal OUT Output Terminal er..8e
2 ABSOLUTE MAXIMUM RATING (Ta=5 C) PARAMETER SYMBOL RATING UNIT Supply oltage + +5 Power Dissipation P D 5 (Note) mw Maximum Input oltage IMAX ~ + (Note) Operating Temperature Range Topr - ~ +85 C Storage Temperature Range Tstg - ~ +5 C (Note) EIA/JEDEC STANDARD Test board (7.x.3x.mm, layer, FR-) mounting (Note) Don t put Input oltage more than Power Supply oltage. ELECTRICAL CHARACTERISTICS (Ta=5 C, + =9, R L=7k, IN=.5rms, f=khz, all controls flat unless otherwise specified) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating oltage Supply Current I DD No signal - ma Reference oltage REF No signal Maximum Input oltage INS Main olume=-db,thd=% rms Maximum Output oltage OM THD=%.. - rms oltage Gain G Input Gain=+dB, IN=mrms 8 db oltage Gain G db oltage Gain 3 G 3 Main olume=mute, BW=Hz-3kHz db Channel Balance G CB Main olume=db - db Total Harmonic Distortion THD o=.5rms,bw=hz~3khz -.. % Output Noise oltage NO Main olume=db μrms Channel Separation CS R g= db MUTE TERMINAL CONTROL CHARACTERISTICS(Ta=5 C, all controls flat unless otherwise specified) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Low Level Input oltage IL -. High Level Input oltage IH. - + CONTROL TERMINAL EXPLANATION Mute Terminal- (Ta=5 C, + =9, R L=7k, IN=.5rms, f=khz, all controls flat unless otherwise specified) MODE STATUS TEST CONDITION Mute ON H Mute is Active Mute OFF L Mute is NOT Active
3 TERMINAL DESCRIPTION Terminal SYMBOL FUNCTION EQUIALENT CIRCUIT OLTAGE + 3 IN IN IN3 IN 3kΩ AC Input + / 8kΩ REF Internal DD kω 5 MUTE MUTE Control kω + SDA I C Data Input /Acknowledge Output.7Ω kω - ACK + 7 SCL I kω C Clock Input - 3
4 TERMINAL DESCRIPTION Terminal SYMBOL FUNCTION EQUIALENT CIRCUIT OLTAGE Supply oltage + + 3Ω 9 REF Reference oltage 75kΩ + / 75kΩ + 3 OUT OUT3 OUT OUT Ω AC Output + / kω REF
5 TEST CIRCUIT I DD / REF INS / OM / G / G / G 3 / G CB / THD IN OUT IN OUT IN OUT 3 IN OUT 3 IN3 3 OUT3 IN3 3 OUT3 IN OUT IN OUT MUTE 5 Zero Cross Detection GND MUTE 5 Zero Cross Detection GND SDA ref I C SCL 7 Bias REF 9 uf + 8 A + SDA SCL 7 REF ref 9 I C + + Bias 8 uf uf uf NO CS IN OUT IN OUT IN OUT 3 IN OUT 3 IN3 3 OUT3 IN3 3 OUT3 IN OUT IN OUT MUTE 5 Zero Cross Detection GND MUTE 5 Zero Cross Detection GND SDA ref REF 9 uf SDA ref REF 9 uf SCL 7 I C + + Bias 8 uf SCL 7 I C + + Bias 8 uf 5
6 APPLICATION CIRCUIT IN OUT IN OUT 3 IN3 3 OUT3 IN OUT + MUTE GND 5 Zero Cross Detection SDA ref REF 9 uf SCL 7 I C + + Bias 8 uf
7 TIMING ON THE I 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 IC BUS (SDA,SCL) I C BUS Load Conditions STANDARD MODE : FAST MODE : PARAMETER Pull up resistance k (Connected to +5), Load capacitance pf (Connected to GND) Pull up resistance k (Connected to +5), Load capacitance 5pF (Connected to GND) SYMBOL Standard mode Fast mode MIN. TYP. MAX. MIN. TYP. MAX. Low Level Input oltage IL High Level Input oltage IH Low level output voltage (3mA at SDA pin) OL Input current each I/O pin with an input voltage between. DD and.9 DDmax UNIT I i µa CHARACTERISTICS OF BUS LINES (SDA,SCL) FOR I C-BUS DEICES Standard mode Fast mode PARAMETER SYMBOL MIN. TYP. MAX. 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 nl Noise margin at the High level nh C b ; total capacitance of one bus line in pf. 7
8 RECOMMENDED POWER-UP SEQUENCE + (8pin) t 5msec SDA/SCL (pin/7pin) t 8
9 DEFINITION OF I C REGISTER Note) Please don't send except specified data for avoiding an incorrect operation. I C BUS FORMAT MSB LSB MSB LSB MSB LSB S Slave Address A Select Address A Data A P bit 8bit bit 8bit bit 8bit bit bit S: Starting Term A: Acknowledge Bit P: Ending Term SLAE ADDRESS Slave Address MSB LSB - Hex 8(h) CONTROL REGISTER TABLE The select address sets each function (olume A, olume B, olume B, olume 3B, olume B). The auto increment function cycles the select address as follows. H H H 3H H H <Write Mode> Select Address BIT D7 D D5 D D3 D D D H OLUME A OLUME 3A OLUME A OLUME A H ZERO OLUME B H ZERO OLUME B 3H ZERO 3 OLUME 3B H ZERO OLUME B CONTROL REGISTER DEFAULT ALUE Control register default value is all. Select Address BIT D7 D D5 D D3 D D D H H H 3H H *: Don t Care Note.) This product starts up by MUTE setting in power ON. Use it after removing MUTE of each setting. If any audio signal is inputted in input signal terminal before power ON, it may cause initial condition abnormality. In conditions of use such as the above, it prevents that abnormality by setting MUTE before power OFF" 9
10 INSTRUCTION CODE a) OLUME_A SETTING Select Address D7 D D5 D D3 D D D H OLUME A OLUME 3A OLUME A OLUME A OLUMEA/A/3A/A: to +9dB (3dB/Step) b) OLUME_B SETTING Select Address BIT D7 D D5 D D3 D D D BIT H ZERO OLUME B H ZERO OLUME B 3H ZERO 3 OLUME 3B H ZERO OLUME B ZERO //3/: Ch/Ch/Ch3/Ch Zero Cross Detection ON/OFF setting : OFF : ON OLUMEB/B/3B/B: olume B/B/3B/B setting to -95 db (db/step) / Mute OLUME A (Select Address : H) OLUME A Ch D D Gain(dB) Ch D3 D Ch 3 D5 D Ch D7 D * *: Default alue ZERO CROSS DETECTION (Select Address : H/H/3H/H) ZERO CROSS DETECTION Ch Ch Ch 3 Ch ZERO D7 D7 D7 D7 OFF* ON *: Default alue
11 OLUME B (Select Address : H/H/3H/H) OLUME B Ch D D5 D D3 D D D Gain(dB) Ch D D5 D D3 D D D Ch 3 D D5 D D3 D D D Ch D D5 D D3 D D D Mute Mute Mute Mute* *: Default alue
12 TYPICAL CHARACTERISTICS Operating Current vs Supply oltage in=no signal, R L =No Load Reference oltage vs Supply oltage in=no signal, R L =No Load 8 Operating Current [ma] 8 85 o C - o C 5 o C ref [] 85 o C 5 o C - o C Supply oltage [] Supply oltage [] olume Gain Output vs olume Setting + =9, Ta=5 o C, f=khz, Bandpass oltage Gain Output vs Frequency + =9, Ta=5 o C, in=.5rms, Bandpass - olume Gain Output [db] oltage Gain [db] db - -db - -3dB - -5dB -8-7dB - -95dB MUTE - olume Setting [db] Frequency [Hz] oltage Gain Output vs Frequency + =9, Ta=5 o C, in=.rms, Bandpass THD+N vs in -olume + =9, Ta=5 o C, f=khz, BW=Hz-3kHz oltage Gain [db] 8 9dB db 3dB THD+N [%].. -5dB -db -3dB -db -db db. db - Frequency [Hz]... Input oltage [rms]
13 TYPICAL CHARACTERISTICS THD+N vs Frequency Ta=5⁰C, in=.5rms (.8rms for + =.5), ol =db THD+N vs in - Temperature + =9, f=khz, BW=Hz-3KHz, ol =db THD +N [%].. + =.5 + =9 THD+N [%]... + =.5.,,, Frequency [Hz]. - o C, 5 o C, 85 o C... Input oltage [rms] THD+N vs in - Supply Ta=5⁰C, f=khz, BW=Hz-3kHz, Gain=dB Maximum Ouput oltage vs Supply oltage f=khz THD=%,Gain =db 5 THD +N [%] Maximum Output oltage [rms] 3 85⁰C -⁰C 5⁰C... Input oltage[rms] 5 5 Supply oltage [] -8 Output Noise oltage vs olume Setting + =9, Ta=5⁰C,Rg=, A-Weight filter -7 Channel Separation vs Frequency + =9, in=.5rms, ol =db, BW:-8kHz Chin-Chout Output Noise oltage[db] o C, 5 o C, 85 o C Channel Separration [db] ,,, olume Setting [db] Frequency [Hz] 3
14 TYPICAL CHARACTERISTICS MUTE Control Characteristics Ta=5⁰C, f=khz, in=.5rms (.8rms for + =.5), mute= OFF -> ON Output Gain [db] MUTE pin oltage [] [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.
NJU Channels Electronic Volume PACKAGE OUTLINE
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