njw1165 New Japan Radio Co.,Ltd, njw1165 Datasheet

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njw1165

Manufacturer Part Number
njw1165
Description
Audio Processor
Manufacturer
New Japan Radio Co.,Ltd
Datasheet

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njw1165L
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OKI
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njw1165L
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JRC
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20 000
functions processing audio signal for TV, such as tone
control, balance, volume, mute, NJRC original surround, and
AGC functions.
surround sound and clear vocal orientation.
BUS interface.
GENERAL DESCRIPTION
The NJRC original surround system reproduces natural
FEATURES
BLOCK DIAGRAM
All of internal status and variables are controlled by I
The NJW1165 is an audio processor. It includes all of
AGC Circuit (It reduces volume difference among input sources.)
Operating Voltage
I
eala (NJRC Original Surround)
Simulated Surround
Bi-CMOS Technology
Package Outline
2
C BUS Interface
AGC
VOL1
VOL1
SDIP30, SDMP30
7.5 to 13V
Sim ulated
Surround
eala
&
AUDIO PROCESSOR
2
C
TONE
TONE
PACKAGE OUTLINE
NJW1165L
VOL2
VOL2
Interface
I
2
NJW1165
Bias
C Bus
NJW1165M
- 1 -

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njw1165 Summary of contents

Page 1

... GENERAL DESCRIPTION The NJW1165 is an audio processor. It includes all of functions processing audio signal for TV, such as tone control, balance, volume, mute, NJRC original surround, and AGC functions. The NJRC original surround system reproduces natural surround sound and clear vocal orientation. All of internal status and variables are controlled by I BUS interface ...

Page 2

... NJW1165 PIN FUNCTION No. Symbol 1 IN1a Ach Input 2 NC Non Connect 3 NC Non Connect 4 OUT1a Ach Output for the Other Accessories 5 IN2a Ach Input From the Other Accessories 6 TONE-Ha Ach Treble Filter 7 TONE-La Ach Bass Filter 8 OUT2a Ach Output 9 AGC AGC Filter ...

Page 3

... BW=400Hz to 30kHz G VOL= 0dB VMAX G VOL= MUTE VMIN Vin = 2Vrms CS Ain Bout, Bin Aout VOL = 0dB V NO1 BW=400Hz to 30kHz VOL = MUTE V NO2 BW = 400Hz to 30kHz Logic Output: High V AUX Logic Output: Low NJW1165 RATING 15 700 -20 to +75 -40 to +125 MIN. TYP. MAX. 7.5 9.0 13 4.0 4.5 5.0 2 ...

Page 4

... NJW1165 TONE CONTROL PARAMETER High Frequency Boost High Frequency Flat High Frequency Cut Low Frequency Boost Low Frequency Flat Low Frequency Cut SUB-TONE CONTROL PARAMETER High Frequency Boost High Frequency Cut Low Frequency Boost Low Frequency Cut AGC CONTROL PARAMETER AGC Boost ...

Page 5

... DD DDmax t f SU:DAT t SU:STA t HIGH BUS (SDA,SCL) Pull up resistance 4k (Connected to +5V), Load capacitance 200pF (Connected to GND) SYMBOL HD:STA SP t SU:STO Standard mode UNIT MIN. TYP. MAX. 0.0 - 1.5 V 2 0 µA NJW1165 t BUF ...

Page 6

... HD:DAT Please hold the Data Hold Time (t The SDA block in the NJW1165 does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not providing a hold time of at least 300nsec for the SDA in the master device. The time-consists of the data-delay-circuit of the SDA terminal are as follows. ...

Page 7

... Ach Output for the Other Accessories 8 OUT2a 23 OUT2b Bch Output for the Other Accessories 27 OUT1b 10 SS-FIL Simulated Stereo Filter 6 TONE-Ha Treble (tone control) filter terminal 25 TONE-Hb FUNCTION 1,30 pin Ach Output FB Bch Output terminal NJW1165 EQUIVALENT CIRCUIT V+ 20k 80k Vref 4, 8 23,27pin 50 10pin 25pin 20k FB VOLTAGE V+/2 V+/2 V+/2 V+/ ...

Page 8

... NJW1165 ! TERMINAL DESCRIPTION No. SYMBOL 7 TONE-La Bass (tone control) filter terminal 24 TONE-Lb Capacitor connection terminal for 9 AGC AGC attack and recovery time setting Pop Noise Reduction 11 CVB 12 CVA for Volume & Balance 13 SDA 14 SCL - 8 - FUNCTION 11,12pin data terminal clock terminal ...

Page 9

... Pop Noise reduction for Bass Control 19 CTL Pop Noise reduction for Treble Control Surround filter terminal 22 SR-FIL 15 V+ Ground terminal 16 GND Supply voltage terminal FUNCTION 5,26pin 19pin NJW1165 EQUIVALENT CIRCUIT 24k 212k 21pin 212k 17, 18pin 36k 22pin VOLTAGE ...

Page 10

... NJW1165 APPLICATION CIRCUIT 1 4.7µ 4.7µ 4.7n 100n 4.7µ 1µ 100n 4.7µ 4.7µ (NOTE Separate the I C bus line from the following terminals for avoiding digital noise problem. Pin No. Symbol Pin No. 6 TONE-Ha 7 TONE- IN1a OUT1a OUT1b 5 IN2a 6 TONE-Ha ...

Page 11

... IN Surround Sound IC or OUT Sound Enhancement IC Ex.) ealaBASS : NJM2706 BBE Mach3 : NJM2155 SRS TruBass : NJM2192A SRS WOW : NJM2700, NJM2195, … , etc Symbol Pin No. Symbol SS FIL 24 TONE-Lb SR FIL 25 TONE-Hb NJW1165 4.7µ 4.7µ 27 4.7µ 4.7n 100n 24 4.7µ 23 100n 22 4.7µ 4.7µ ...

Page 12

... NJW1165 APPLICATION NOTE 1. AGC (Auto Gain Control) Circuit AGC circuit adjusts the input signal level with Boost/Attenuate circuit. AGC boost the low input signal level and attenuate high input signal level automatically. The AGC flat levels (150mV, 300mV, 400mV and 540mV) are selectable via I figure ...

Page 13

... Reducing this capacity may cause to reduce the maximum attenuation level and to increase the output noise changes by gain setting of Tone. M ≈ 2.65 M ≈ 3.45 M ≈ 8. changes by gain setting of Tone. N ≈ 0.76 N ≈ 0.58 7pin N ≈ 0.25 24pin NJW1165 (±15dB) (±10dB) (±5dB (±15dB) (±10dB) (±5dB ...

Page 14

... NJW1165 2 DEFINITION REGISTER BUS FORMAT MSB LSB S Slave Address 1bit 8bit S: Starting Term A: Acknowledge Bit P: Ending Term SLAVE ADDRESS MSB R/W=0: Receive Only R/W=1: No Output Data CONTROL REGISTER TABLE The select address sets each function (Volume, Balance, AGC, Surround, Tone Control, AUX). ...

Page 15

... BCSB: Boost cut select for SUB-BASS control “0”: Cut “1”: Boost SUB-BASS: SUB- BASS control (1dB/Step) Sub-Cut Level : -3dB to 0dB(1dB/Step) Sub-Boost Level : 0dB to +3dB(1dB/Step) BIT VOL BIT BAL BIT BASS BCSB NJW1165 AGC SUR SUB-BASS - 15 - ...

Page 16

... NJW1165 d) TONE CONTROL TREBLE SETTING Select Address D7 D6 03H BCT BCT: Boost cut select for Treble control “0”: Cut “1”: Boost TREB: Treble control (1dB/step) Cut Level : -15dB to 0dB(1dB/Step) Boost Level : 0dB to +15dB(1dB/Step) BCST: Boost cut select for Sub-Treble control “ ...

Page 17

... NJW1165 ...

Page 18

... NJW1165 !MASTER VOLUME (Select Address: 00H) Gain (dB) HEX -64 3F ...

Page 19

... NJW1165 ...

Page 20

... NJW1165 !TONE CONTROL BASS (Select Address: 02H) Bass Cut or Boost Cut Boost Cut Gain (dB) Boost Gain (dB) -15 15 -14 14 -13 13 -12 12 - !TONE CONTROL SUB-BASS (Select Address: 02H) Sub-Bass Cut or Boost ...

Page 21

... BCST SUB-TREB NJW1165 ...

Page 22

... NJW1165 ! TYPICAL CHARACTERISTICS Supply Current vs Supply Voltage o Ta= Supply Voltage [V] Gain vs Volume Control V+=9V, Vin(Ach)=1Vrms,f=1kHz, OUTPUT,Rg=600 0 -20 -40 -60 o 75,25,-20 C -80 -100 0 -10 -20 -30 -40 -50 Volume Control [dB] Output Noise vs Volume Control V+=9V, OUTPUT,BW=400-30kHz o Rg=600 Ta=25 -60 -70 -80 -90 -100 -110 ...

Page 23

... V+=9V, Vin(Ach), f=1kHz, Vo(Ach)OUTPUT o Rg=600 , BW=400Hz-30kHz, Vol=0dB C 100 10 1 0.1 0dB 0.01 1 0.01 Channel Separation vs Frequency V+=9V, Vin=2Vrms, f=1kHz, Vo=OUTPUT Rg=600 , Vol=0dB, Ta= 100 NJW1165 THD+N vs Input Voltage - 0.1 1 Input Voltage [Vrms] THD+N vs Output Voltage o - 0.1 ...

Page 24

... NJW1165 ! TYPICAL CHARACTERISTICS Gain vs Frequency (TONE) V+=9V, Vin(Ach)=0.1Vrms,Gv:3dB steps Vo(Ach), Rg=600 , Ta= -10 -20 100 1000 Frequency [Hz] Gain vs Frequency (TONE) V+=9V, Vin(Ach)=0.1Vrms,Gv= +-15dB Vo(Ach), Rg=600 , Ta=25 20 C(6,25pin) = 1nF, 2.2nF, 4.7nF, 10nF 10 10nF 0 -10 4.7nF -20 100 1000 Frequency [Hz] AGC Attack Time (C:9pin=1 F) V+=9V, Vin(Ach+Bch)=1Vrms,f=20kHz,Vo(Ach)OUTPUT AGC level=0 ...

Page 25

... AGC Recovery Time (C:9pin=0.47 F) V+=9V, Vin(Ach+Bch)=1 to 0.05Vrms, f=10kHz, o Vo(Ach)OUTPUT,AGC level=0.15V,Rg=600 ,Ta=25 C 0.2 0.1 0 -0.1 -0 200 150 100 -50 -100 4 10 NJW1165 0 100 200 300 400 500 Time [ms] 0 100 200 300 400 500 Time [ms] Phase vs Frequency (Simulated) V+=9V, Vin(A+Bch)=0.1Vrms, Rg=600 , o Ta=25 C BchOUT ...

Page 26

... NJW1165 NOTE - 26 - [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 ...

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