JRC NJW1138 User Manual

NJW1138

PRELIMINALY

AUDIO PROCESSOR

■■■■ GENERAL DESCRIPTION ■■■■ PACKAGE OUTLINE

The NJW1138 is an audio processor. It includes all of functions processing audio signal for TV, such as tone control, balance, vo lum e, m ute, NJRC origin al surr ound, an d 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.

■■■■ FEATURES

●●●● Operating Voltage 8 to 13V

2

C BUS Interface

●●●● I

●●●● AGC Circuit (It reduces volume difference among input sources.)

●●●● eala(NJRC Original Surround)

●●●● Simulated Surround

●●●● Bi-CMOS Technology

●●●● Package Outline SDIP30, SDMP30

■■■■ BLOCK DIAGRAM

2

C

NJW1138M NJW1138L

VOL1

TONE

eala

AGC

&

Simulated

Surround

VOL2

I2C Bus

Interface

VOL1

TONE

VOL2

Bias

- 1 –F

NJW1138

A

■■■■ PIN FUNCTION

INa NC NC OUT1a IN2a TONE-Ha TONE-La OUT2a

GC SS-FIL CVB CV SDA

INb

NC NC

OUT1b

IN2b

TONE-Hb

TONE-Lb

OUT2b SR-FIL

VREF

CTH

CTL UX0

SCL

GND

UX1

Vcc

No. Symbol Function No Symbol Function

1 IN1a Ach Input 16 Vcc Power Supply Pin 2 NC Non Connect 17 AUX1 Auxiliary Output1 3 NC Non Connect 18 AUX0 Auxiliary Output0 4 OUT1a Ach Output for the Other Accessories 19 CTL DAC Output for Tone Low Frequency 5 IN2a Ach Input From the Other Accessories 20 CTH DAC Output for Tone High Frequency 6 TONE-Ha Ach Treble Filter 21 VREF Reference Voltage 7 TONE-La Ach Bass Filter 22 SR-FI L NJRC Original Surround Filter 8 OUT2a Ach Output 23 OUT2b Bch Output 9 AGC AGC Filter 24 TONE-Lb Bch Bass Filter 10 SS-FIL Simulated Stereo Filter 25 TONE-Hb Bch Treble Filter 11 CVB DAC Output for Bch Volume & Balance 26 IN2b Bch Input from the Other Accessories 12 CVA DAC Output for Ach Volume & Balance 27 OUT1b Bch Output for the Other Accessories 13 SDA SDA Data Input (I2C BUS) 28 NC Non Connect 14 SCL SCL Data Input (I2C BUS) 29 NC Non Connect 15 GND GND 30 IN1b Bch Input

- 2 -

NJW1138

■■■■ ABSOLUTE MAXIMUM RATING (Ta=25°C)

PARAMETER SYMBOL RATING UNIT Supply Voltage V+ 14 V Power Dissipation PD 700 mW Operating Temperature Range Topr -20 to +75 °C Storage Temperature Range Tstg -40 to +125 °C

■■■■ ELECTRICAL CHARACTERISTICS

( Ta=25°C, V+=9V, Rg=600Ω, R

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Voltage V+ 8.0 9.0 13.0 V Supply Current ICC No Signal - 10 25 mA

Reference Voltage V Maximum Input Voltage VIM VOL=-20dB,THD=1% 2.8 3.0 - Vrms

Maximum Output Voltage VOM Channel Balance GCB VOL=0dB -1.5 0.0 1.5 dB

Balance Boost A BA Balance Cut A BA Balance Boost B BB Balance Cut B BB

Total Harmonic Distortion THD Maximum Gain G

Minimum Gain G Channel Separation CS Vin = 2Vrms - - -70 dB

Output Noise 1 V

Output Noise 2 V

AUX Output Voltage V

=47kΩ, Vin=100mVrms/1kHz unless otherwise specified)

L

No Signal 4.0 4.5 5.0 V

REF

OUTPUT VOL=0dB,THD=1%

CHS=”0”,BAL=”11111” -2.0 0.0 2.0 dB

BST

CHS=”1”,BAL=”11111”

CUT

BST

CUT

Vin = 1Vrms

CHS=”1”,BAL=”11111” -2.0 0.0 2.0 dB

CHS=”0”,BAL=”11111” Vin = 1Vrms Vo=0.5Vrms BW=400Hz to 30kHz

VOL= 0dB -2.0 0.0 2.0 dB

VMAX

VOL= MUTE - - -70 dB

VMIN

VOL = 0dB

NO1

NO2

BW=400Hz to 30kHz VOL = MUTE BW = 400Hz to 30kHz

- 2.5 - Vrms

- - -70 dB

- - 0.5 %

-

(31.6)

-

Logic Output : High 4.5 - 5.0

AUX

Logic Output : Low 0 - 0.3

-90

-106 (5.0)

-85

(56.2)

-96

(15.8)

dBV

(µVrms)

dBV

(µVrms)

V

BW : Band Width

-3-

NJW1138

♦♦♦♦ TONE CONTROL

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT High Frequency Boost HF

High Frequency Flat HF High Frequency Cut HF

Low Frequency Boost LF Low Frequency Flat LF Low Frequency Cut LF

♦♦♦♦ SUB-TONE CONTROL

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT High Frequency Boost SHF

High Frequency Cut SHF

Low Frequency Boost SLF

Low Frequency Cut SLF

BST

FLT

CUT

BST

FLT

CUT

f=10kHz

TRBE=”0000”,f=10kHz -2.0 0.0 2.0 dB

BCT=”0”,TRBE=”1111”, f=10kHz BCB=”1”,BASS=”1111”, f=100Hz

BASS=”0000”,f=100Hz -2.0 0.0 2.0 dB

BCB=”0”,BASS=”1111”, f=100Hz

BCST=”1”,

BST

SUB-TREB=”11”,f=10kHz BCST=”0”,

CUT

SUB-TREB=”11”,f=10kHz BCSB=”1”,

BST

SUB-BASS=”11”,f=100Hz BCSB=”0”,

CUT

SUB-BASS=”11”,f=100Hz

BCT=”1”,TREB=”1111”,

12.5 15.0 17.5 dB

-17.5 -15.0 -12.5 dB

12.5 15.0 17.5 dB

-17.5 -15.0 -12.5 dB

2.0 3.0 4.0 dB

-4.0 -3.0 -2.0 dB

2.0 3.0 4.0 dB

-4.0 -3.0 -2.0 dB

♦♦♦♦ AGC CONTROL(AGC-ON)

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT AGC Boost AGC AGC Flat1 AGC AGC Flat2 AGC AGC Flat3 AGC AGC Flat4 AGC AGC Cut AGC

♦♦♦♦ SURROUND (SURROUND-ON)

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT

Surround Gain1 SR

Surround Gain2 SR

Surround Gain3 SR

Surround Gain4 SR

Simulated Surround Gain1 SR

Simulated Surround Gain2 SR

Vin=50mVrms, f=1kHz 1.5 3.5 5.5 dB

BST

Vin=150mVrms, f=1kHz -2.5 0.0 2.5 dB

FLT1

Vin=300mVrms, f=1kHz -2.5 0.0 2.5 dB

FLT2

Vin=400mVrms, f=1kHz -2.5 0.0 2.5 dB

FLT3

Vin=540mVrms, f=1kHz -2.5 0.0 2.5 dB

FLT4

Vin=2Vrms, f=1kHz -14 -10 -6.0 dB

CUT

GAIN1

GAIN2

GAIN3

GAIN 4

SIM1

SIM2

Ain→Aout, f=100Hz SUR0=”0”, SUR=”1” Ain→Bout, f=100Hz SUR0=”0”, SUR=”1” Ain→Aout, f=100Hz SUR0=”1”, SUR=”1” Ain→Bout, f=100Hz SUR0=”1”, SUR=”1” Ain+Bin→Aout, f=1kHz SUR0=”1”, SUR=”0” Ain+Bin→Bout, f=1kHz SUR0=”1”, SUR=”0”

6.0 8.0 10.0

1.6 3.6 5.6

10.7 12.7 14.7

8.4 10.4 12.4

1.0 3.0 5.0

dB

- 4 -

P

S

P

NJW1138

2

■■■■ I

C BUS BLOCK CHARACTERISTICS (SDA,SCL)

PARAMETER SYMBOL MIN. TYP. MAX. UNIT High Level Input Voltage VIH 3.0 - 5.0 V Low Level Input Voltage VIL 0 - 1.5 V High Level Input Current IIH - - 10 µA Low Level Input Current IIL - - 10 µA Low Level Output Voltage (3mA at SDA pin) VOL 0 - 0.4 V Maximum Output Current IOL -3.0 - - mA Maximum Clock Frequency f Data Change Minimum Waiting Time t Data Transfer Start Minimum Waiting Time t Low Level Clock Pulse Width t High Level Clock Pulse Width T Minimum Start Preparation Waiting Time t Minimum Data Hold Time t Minimum Data Preparation Time t

0 - 100 kHz

SCL

4.7 - - µs

BUF

4.0 - - µs

HD:STA

4.7 - - µs

LOW

4.0 - - µs

HIGH

4.7 - - µs

SU:STA

5.0 - - µs

HD:DAT

250 - - ns

SU:DAT

Rise Time tR - - 1.0 µs Fall Time tF - - 300 ns Minimum Stop Preparation Waiting Time t

2

C BUS Load Condition: Pull up resistance 4kΩ (Connected to +5V)

I

4.7 - - µs

SU:STO

Load capacitance 200pF (Connected to GND)

SDA

SCL

t

LOW

tR

t

HD:DA

t

BU

t

HD:ST

t

HIGH

tF

t

HD:ST

t

SU:DA

SU:ST

t

SU:ST

Sr

-5-

NJW1138



TERMINAL DESCRIPTION

No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE

V+

1

30

4

8 23 27

10 SS-FIL

INa INb

OUT1a OUT2a OUT2b OUT1b

Ach Input terminal Bch Input terminal

Ach Output for the Other Accessories

Bch Output for the Other Accessories

Simulated Stereo Filter

Ach Output Bch Output

terminal

1,30 pin

20k

V+/2

80k

Vref

FB

50

4, 8 23,27pin

V+/2

5.3 k

FB

10pin

V+/2

6 25

TONE-Ha TONE-Hb

Treble(tone control) filter terminal

FB

10k

6, 25pin

V+/2

7 24

TONE-La TONE-Lb

Bass(tone control) filter terminal

12k

FB

12k

7, 24pin

V+/2

- 6 -



TERMINAL DESCRIPTION

NJW1138

No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE

9 AGC

11 12

13 SDA

CVB CVA

Capacitor connection terminal for

AGC attack and recovery time setting

DAC output terminal for Bch volume control DAC output terminal for Ach volume control

I2C data terminal

11,12pin

400

5V

4k

400

4k

9pin

-

13pin

8k

-

14 SCL

5

TONE INa

26

TONE INb

I2C clock terminal

Ach Input from the Other Accessories Bch Input from the Other Accessories

5V

4k

-

14pin

8k

5,26pin

24k

V+/2

-7-