products presentation

38
1 Products Presentation Products Presentation 2005 Summer 2005 Summer STANDARD IC Div. STANDARD IC Div. Marketing Dept. Marketing Dept. SECTION 1 SECTION 1 MASAHIKO INAGAKI MASAHIKO INAGAKI July, 2005 July, 2005 Audio IC.

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Products Presentation. Audio IC. 2005 Summer. July, 2005. STANDARD IC Div. Marketing Dept. SECTION 1 MASAHIKO INAGAKI. Audio IC - Electronic Volume Products - Strength of NJRC’s Electronic Volume - For AV Amplifier - For DVD recorder - For Mini Component - For Car Audio - PowerPoint PPT Presentation

TRANSCRIPT

Page 1: Products Presentation

1

Products PresentationProducts PresentationProducts PresentationProducts Presentation

2005 Summer2005 Summer

STANDARD IC Div.STANDARD IC Div.Marketing Dept. SECTION 1 Marketing Dept. SECTION 1 MASAHIKO INAGAKIMASAHIKO INAGAKI

July, 2005July, 2005

Audio IC.

Page 2: Products Presentation

2

Audio IC- Electronic Volume Products

- Strength of NJRC’s Electronic Volume - For AV Amplifier- For DVD recorder- For Mini Component- For Car Audio- For General

- Audio Amplifier Products- Headphone Amplifier with Electronic Volume- Boost Amplifier for Car Audio

- Others- Band Pass Filters for Spectrum Analyzer- Audio Limiter

Page 3: Products Presentation

3

Electronic Volume Products

00:00 1ch00:00 1ch

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

Page 4: Products Presentation

4

Strength of NJRC’s Electronic Volume

-Wide Line up-

Simple 2 channel Volume to Multifunction 8 channel Volume

Line up for each application

- NEWS -

00:00 1ch00:00 1ch

< Home Theater / AV Amplifier / Mini-Compo. >

< DVD/HDD Recorder > < Car Audio >

- Feature - Low noise -114dBV typ.

Line up for 0.5dB step series

Low distortion 0.0008% typ.

(NJW1196)

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

Page 5: Products Presentation

5

Electronic Volumefor AV Amplifier

-Resistor Ladder Type-

Page 6: Products Presentation

6

Electronic VolumeElectronic Volume ICIC ( & Selector IC)( & Selector IC) Function Function Segmentation MapSegmentation Map

Ladder Type Electronic Volume & Selector IC for AV AmplifierLadder Type Electronic Volume & Selector IC for AV Amplifier

2ch 4ch 6ch 8ch

For AV AmplifierFor AV AmplifierFor 2ch / Multi-ch AudioFor 2ch / Multi-ch Audio

Channel

To

ne &

Vo

l. On

ly

Fu

nctio

n

Sel.

To

ne

Sel.

NJW1159NJW1159 NJW1159NJW1159

NJW1150/51NJW1150/51 NJW1150/51NJW1150/51

NJW1153NJW1153 NJW1153NJW1153 NJW1157BNJW1157B NJW1157BNJW1157B

NJW1194NJW1194 NJW1194NJW1194 NJW119XNJW119X NJW119XNJW119X NJW1197NJW1197 NJW1197NJW1197

NJW11XXNJW11XX NJW11XXNJW11XX

NJW11XXNJW11XX NJW11XXNJW11XX

0.5dBstep0.5dBstep 0.5dBstep0.5dBstep 0.5dBstep0.5dBstep

NJW11XXNJW11XX NJW11XXNJW11XX0.5dBstep0.5dBstep0.5dBstep0.5dBstep

NJWXXXX NJWXXXX SeriesSeries

NJWXXXX NJWXXXX SeriesSeries

Sel. O

nly

0.5dBstep0.5dBstep

9in 3out Selector9in 3out Selector

NJW11XXNJW11XX NJW11XXNJW11XX0.5dBstep0.5dBstep

Page 7: Products Presentation

7

Volume

Buffer Amp.(Variable Gain)

Tone Control2ch input Sel.

Volume Buffer Amp.(Variable Gain)

CD

MD

Tuner

AUX0

Dolby DigitalDecoder

Dolby DigitalDecoderDVD

InputATT

InputATT

Tone Control

2ch input Sel.

2ch

2ch

2ch

2ch

2ch

2ch

6ch

2ch

Rec Out

6ch

DSPDSP

AUX1

2ch

7.1ch

NJW1194 NJW1194 2ch EVR with Tone & Input Selector2ch EVR with Tone & Input Selector

NJW1153 / NJW119X NJW1153 / NJW119X 6ch EVR with Input Selector6ch EVR with Input Selector

Tone Control for the Others beside Front Channel2ch

Selectable 4-Chip Address

two-channel stereo to eight-channel

Application Example 1 EVR Application Example 1 EVR ( AV ( AV Amp. )Amp. )

Page 8: Products Presentation

8

Application Example 2 EVR Application Example 2 EVR ( AV ( AV

Amp. )Amp. )

Volume

Buffer Amp.(Variable Gain)

Tone Control2ch input Sel.

Volume Buffer Amp.(Variable Gain)

CD

MD

Tuner

AUX0

Dolby DigitalDecoder

Dolby DigitalDecoderDVD

InputATT

InputATT

Tone Control

2ch input Sel.

2ch

2ch

2ch

2ch

2ch

2ch

2ch

2ch

8ch

2ch

Rec Out

8ch

DSPDSP

AUX1

AUX2

AUX3

2ch

7.1chEx). Living Room

2chEx). Bed RoomChild’s Room

Room 1

Room 2NJW1194 NJW1194 2ch EVR with Tone & Input Selector2ch EVR with Tone & Input Selector

NJW1157B / NJW1197 NJW1157B / NJW1197 8ch EVR with Input Selector8ch EVR with Input Selector

Tone Control for Room 2 (Sub. Room) Selectable 4-Chip Address

Room 2 to Room 5

Page 9: Products Presentation

9

NJW1197

GENERAL DESCRIPTION The NJW1197 is a 8-Channel Electronic Volume with Input Selector. It includes tone control, Input/Output gain control, REC Output and Multi channel inputs. The NJW1197 is suitable for multi-channel audio system, such as AV amplifier, DVD receiver, and others. All of internal status and variables are controlled by3-wired serial bus interface.

8-Channel Electronic Volume with Input Selector

FEATURES Operating Voltage 4.5 to 7.5V 3-wired Serial BUS Control Input selector (2ch 11, 7.1ch 2) REC Output (2ch 5) Independent Mute function Input Gain Control 0/-3/-6/-9/-12dB Output Gain Control

Gain : 0/+12/+13/+14/+15/+16/+17/+18dB (L,R,C,LS,RS,LB,RBch)

Gain : 0/+22/+23/+24/+25/+26/+27/+28dB (SWch)Independent Control: L,Rch / Cch / LS,RSch / LB,RBch / SWch

Volume 0 ~ -100dB/0.5dBstep, MUTE Tone Control (Bass,Treble) for L,R-ch Bi-CMOS Technology Package Outline QFP100

PACKAGE OUTLINE

NJW1197FC2 BLOCK DIAGRAM

U.D

.

FL+ FL-

CBIN LSBIN RBBIN LBBIN RBBIN

SWBIN

GNDV+

V-LATCHDATACLOCK

SupplyVoltage

COMInterface

FR+ FR-

VolumeOutput Gain

LOUT

ROUT

COUT

LSOUT

RSOUT

SWOUT

TONE

TONE

FIL1_R FIL2_R FIL3_RFIL1_L FIL2_L FIL3_L

Multi-channel Selector

Volume

LBOUT

RBOUT

LBIN RBIN

SSWBSW

TSW

MUTE

LSCIN LBCIN RBCINRSCIN

Mu

lti-Ch

an

nel In

pu

t A

CAINLSAINRSAINLBAINRBAINSWAIN

LAINRAIN

R1IN

L1IN

L2IN

L3IN

L4IN

L5IN

L6IN

L7IN

R2IN

R3IN

R4IN

R5IN

R6IN

R7IN

L8IN

R8IN

2 C

han

nel In

pu

t

L9IN

R9IN

L10IN

R10IN

L11IN

R11IN

RE

CA

1L

RE

CA

2L

RE

CA

4L

RE

CA

1R

RE

CA

3R

RE

CA

4R

RE

CA

3L

RE

CA

2R

RE

CB

1L

RE

CB

1R

Multi-Channel Input BInput Selector REC Out Selector

SW

SW

P.6

Page 10: Products Presentation

10

NJW1194

GENERAL DESCRIPTION The NJW1194 is a 2-channel electronic volume with4-in 1-out stereo audio selector and Tone Control. The NJW1194 performs low noise and low distortion characteristics with resistance ladder circuit. All of functions are controlled via three-wired serial bus. Selectable 4-Chip address is available for using four chips on same serial bus line. It’s suitable for two-channel stereo system and or multi-channel audio system.

2-Channel Electronic Volume with Input Selector, Tone Control

FEATURES Operating Voltage 4.5 to 7.5V 3-wired Serial BUS Control Selectable 4-Chip Address Available for using four chips on same serial bus line Low Output Noise -110dBV typ. Low Distortion 0.001% typ. at Vin=2Vrms 4in 1out Stereo Signal Selector Volume 0 to –100dB /0.5dBstep, MUTE Volume Output Gain +18 to +6dB /2dBstep Tone Control 0 to 10dB / 1dBstep Channel Separation 100dB typ. Bi-CMOS Technology Package Outline SSOP32

PACKAGE OUTLINE

NJW1194V

BLOCK DIAGRAM

U.D

.

TONE

TONE

Bias

V+ GND V-

Out A

OutB

Ach Tone Filter

Bch Tone Filter

In A1

In A2

In A3

In A4

In B1

In B2

In B3

In B4

Control Logic

CL

OC

K

DA

TA

LA

TC

H

AD

R1

AD

R0

P.8

Page 11: Products Presentation

11

Electronic Volumefor DVD recorder -Resistor Ladder Type-

00:00 1ch00:00 1ch

Page 12: Products Presentation

12

Application Example Application Example NJW1196 ( DVD NJW1196 ( DVD recorder. )recorder. )

For Input Level Adjusting in DVD/HDD Recorder

VCR

A/D

TV Tuner

DVDDVD

BS Tuner

TV

BSEncoder

CAM(Front VCR)

HDDHDD

CS / CATV

CS /CATV Tuner

00:00 1ch00:00 1ch

For double Tuner

NJW1196NJW1196

Selectable 2-Chip Address

Vno=-114dBV typ.THD=0.0008% typ.

Low noise, Low Distortion

Page 13: Products Presentation

13

NJW1196

GENERAL DESCRIPTION The NJW1196 is a 2-channel electronic volume with6-in 1-out stereo audio selector. The NJW1196 performs low noise and low distortion characteristics with resistance ladder circuit. It includes two reference voltage circuits for each channel. They realizes very high channel separation. All of functions are controlled via I2C Bus. And the Slave Address selector is available for using two chips on same serial bus line. It is suitable for input signal trimmer of audio equipments such as DVD/HDD recorder and VCR.

2-Channel Electronic Volume with Input Selector

FEATURES Operating Voltage 7.5 to 13V I2C Bus Interface Slave Address select function Low Output Noise -114dBV typ. Low Distortion 0.0008% typ. at Vin=1Vrms 6in 1out Stereo Signal Selector Volume +21 to 0dB /3dBstep

0 to –39.5dB /0.5dBstep, MUTE Channel Separation 110dB typ. Input Resistance 130k typ. Bi-CMOS Technology Package Outline SSOP32

PACKAGE OUTLINE

NJW1196V

BLOCK DIAGRAM

26 25 2432 31 30 29 28 27 19 18 1723 22 21 20

7 8 9 1 2 3 4 5 6 14 15 1610 11 12 13

21dB to 0dB/ 3dBstep

21dB to 0dB/ 3dBstep

0dB to -39.5dB/ 0.5dBstep, Mute

0dB to -39.5dB/ 0.5dBstep, Mute

50k

50k

VDD I2CInterface

++ + + + + + + + +

+ ++ + + + + + +

GND DGND

+

+10F10F 10F 10F 10F 10F 10F 10F 10F 100F10F

10F10F 10F 10F 10F 10F 10F 10F 10F

In A1 In A2 In A3 In A4 In A5 In A6 Out A

In B1 In B2 In B3 In B4 In B5 In B6 Out B V+

ADR SDA

VREF Amp.

VREF Amp.

GND

SCL

VOL

VOL

Gain

Gain

U.D

.

P.10

Page 14: Products Presentation

14

Electronic Volumefor Mini-Component

-Resistor Ladder Type-

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

Page 15: Products Presentation

15

Tone Control Bass, Middle, Treble

Tone Control Bass, Middle, Treble

5 Input SelectorTuner, CD, Cassette, Aux1,

Aux2

5 Input SelectorTuner, CD, Cassette, Aux1,

Aux2

Surround + Bass Boost10 effects  ex. Hall, Disco, Church …

Surround + Bass Boost10 effects  ex. Hall, Disco, Church …

VOL1

VOL1

IN2a

IN3a

IN4a

IN5a

IN1b

IN2b

IN3b

IN4b

MO

Na

MO

Nb

MIC-IN 0,6,10,14dB

0 to 14dB 2dBstep

0 to 14dB 2dBstep

surround

TONE

TONE

VOL2

VOL2

Bias

I2C Bus

Interf ace

GND

Vcc

Vref

SCL

SDA

OUTa

OUTb

TREBLE-14 to 14dB2dB step

MIDDLE-14 to 14dB2dB step

BASS-14 to 14dB2dB stepMute

Mic-in

IN1a

IN5b

BassBoost

Audio Processor with multi-purpose Surround Sound

Application Example Application Example NJW1190 ( Mini-NJW1190 ( Mini-Compo. )Compo. )

Resistor Ladder type VolumeLow Distortion 0.005% typ.Low Noise –100dBV typ.

Resistor Ladder type VolumeLow Distortion 0.005% typ.Low Noise –100dBV typ.

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

Page 16: Products Presentation

16

NJW1190NJW1190NJW1190NJW1190

Mute前面スピーカーから音が出ています。前面スピーカーから音が出ています。

The sound comes from speakers on the wall.The sound comes from speakers on the wall.

Mute

Mute-Cancel

ClassicClassic

ONONONON

Classic ModeClassic Mode

JazzJazz

RockRock MovieMovie

DiscoDisco ChurchChurch

CathedralCathedral StadiumStadium

BypassBypass

多彩なサラウンドサウンドを提供します多彩なサラウンドサウンドを提供します““NJW1190” reproduces a number of surround sounds.NJW1190” reproduces a number of surround sounds.

Page 17: Products Presentation

17

Electronic Volumefor Car Audio

-Resistor Ladder Type-

Page 18: Products Presentation

18

Application Example Application Example NJW1192 ( Car Audio NJW1192 ( Car Audio ))

Vol1 : Mastering volume and Loudness

Vol2 : Balance and fader volumeEx.) AM(monaural), FM, CD, AUX switches

3 stereo & 1 monaural in1out Input Selector

Tone Control

±14dB / 2dBstep

4ch Electronic Volume with LoudnessSuitable for Car Audio

I2C

In

terf

ace

Treble Bass

Treble Bass Bia

s

0, +6dB, +12 dB, +18dB

0, +6dB, +12 dB, +18dB

LchLch RchRch

SLchSLch SRchSRch

PowerPowerAmplifierAmplifier

Boost Boost AmplifieAmplifierr Line

OutputLine Output

CDCD

TunerTuner

AUXAUX

TunerTuner

Boost Output Functionfor Car Audio Line Output

NJM2792NJM2792

Line OutputLine Output

Page 19: Products Presentation

19

4-channel Electronic Volume with Input Selector

PACKAGE OUTLINE

NJW1192V

GENERAL DESCRIPTION NJW1192 is 4-channel electronic volume with input selector. It includes master volume, balance control, fader, Loudness, tone control, 3 stereo inputs and 1 monaural input selector and loudness function. NJW1192 performs low noise and low distortioncharacteristics with resistance ladder circuit. All of internal status and variables are controlled by I2C BUS interface.

NJW1192

FEATURES Operating Voltage 7.5 to 13V I2C BUS Interface Low Output Noise -103dBVtyp Low Distortion0.005%typ 3ch Stereo & 1ch Mono Input Selector Loudness and Tone control Main Volume Balance and Fader Bi-CMOS Technology Package Outline SSOP32

BLOCK DIAGRAM

I2C

In

terf

ace

Treble Bass

Treble Bass Bia

s

0, +6dB, +12 dB, +18dB

MONO

0, +6dB, +12 dB, +18dB

U.D

.

P.12

Page 20: Products Presentation

20

Electronic Volumefor General

-Voltage Control Amplifier Type-

Page 21: Products Presentation

21

Application Example 1 Application Example 1 NJW1184 NJW1184 ( General )( General )

Electronic Volume System by Volume function and Auxiliary port

External EVR of system IC without VOL functionEx. ) KARAOKE system

C

NJW1184

IN3

IN4

OUT1

OUT2

OUT3

OUT4

I2C Bus

Inter-face

VOL1

VOL2

VOL3

VOL4

SDA SCL

AUX0

AUX1

ADR

System IC without EVR

Music

IN1

IN2

Function

Page 22: Products Presentation

22

Application Example 2 Application Example 2 NJW1184 NJW1184 ( General )( General )

Selectable 2 Slave Address

Eight channel volume

C

IN1

IN2

IN3

IN4

OUT1

OUT2

OUT3

OUT4

I2C Bus

Inter-f ace

VOL1

VOL2

VOL3

VOL4

SDA SCL

ADRAUX0

AUX1

IN1

IN2

IN3

IN4

OUT1

OUT2

OUT3

OUT4

VOL1

VOL2

VOL3

VOL4

SDA SCL

H

L

NJW1184 NJW1184

I2C Bus

Inter-f ace

ADRAUX0

AUX1

Page 23: Products Presentation

23

NJW1184

GENERAL DESCRIPTION The NJW1184 is a four channel electronic volume. The NJW1184 performs click-noiseless characteristics with VCA circuit.. These functions are controlled by I2C Bus. And the Slave Address selector is available for using two chips on same serial bus line. It’s available for two-channel stereo and or multi-channel audio volume.

4-Channel Electronic Volume

FEATURES Operating Voltage 7.5to 13V I2C Bus Interface Slave Address Selector available for using two chips

on same serial bus line Volume (VCA type) 0 to –100dB/0.5dBstep, MUTE 2 Auxiliary Port Bi-CMOS Technology Package Outline SSOP20, DMP20, DIP20

PACKAGE OUTLINE

BLOCK DIAGRAM

Bias

VOL3

OUT3

OUT4

CVOL1

CVOL2 CVOL3 CVOL4

GND V+

Vref

SCL SDA VOL4

AUX0

IN4

IN3

ADR AUX1

I2C Bus

Interface

VOL1

OUT1

OUT2

VOL2

IN2

IN1

NJW1184V NJW1184M NJW1184D

U.D

.

P.13

Page 24: Products Presentation

24

Audio AmplifierProducts

Page 25: Products Presentation

25

Headphone Amplifierwith Electronic Volume

Page 26: Products Presentation

26

NJM2777 / NJW1109NJM2777 / NJW1109

Headphone Amp.

with EVR

Audio ProcessorAudio ProcessorDSP&D/AClass-D

Amp.

Audio ProcessorAudio ProcessorDSP&D/AClass-D

Amp.

Mismatch in SPK and Hp-Amp Impedance.

Picture in Picture

ex. NJW1149ex. NJW1149

ex. NJW1149ex. NJW1149

NJM2777 / NJW1109 Application

Page 27: Products Presentation

27

VOL

IN b

IN a

VOL

Vref

V+ GND

OUTa

OUTb

DGND

Bias

I2C

CAPa

CAPb

Interface

SDA SCL

VOL

IN b

IN a

VOL

Vref

V+ GND

OUTa

OUTb

CNTb

CNTa

Mute

Bias

Mute

CAPa

CAPb

NJM2777NJM2777 NJW1109NJW1109

II22 C-Bus Control

C-Bus Control

DC Voltage

DC Voltage

Control

Control

PACKAGE OUTLINE

NJW1109D NJW1109M NJW1109V

FEATURES Power Supply Voltage +8 to +10V Low Operating Current 5.0mA typ. EVR range +20 to -80dB Output Power 100mW typ.

@RL=100, V+=9V

Status : MP Status : MP

Headphone Amplifier with EVR

Radio Cassette,CD(DVD)-R/W Slot, Mini Component, Audio Equip.

C-TV,LCD-TV,DVD-Player, AV receiver, I2C-Audio Equip.

P.14

Page 28: Products Presentation

28

Boost Amplifier for Car Audio

Page 29: Products Presentation

29

Application Example Application Example NJM2792 (Car NJM2792 (Car Audio)Audio)

High-voltage output realizes High S/N Performance

V+=9V

Vo=14Vpp

EVR for CarEVR for Car

NJW1192, etc

PowerPowerAmplifierAmplifier

Boost Boost AmplifierAmplifier

NJM2792

V+=9V

Line OutputLine Output

Line OutputLine Output

Comply with DVD Car Theater

Comply with DVD Car Theater

System.System.Comply with DVD Car Theater

Comply with DVD Car Theater

System.System.

Wide Frequency ResponceWide Frequency Responce- 5Vrms typ. , at f=100kHz -

Page 30: Products Presentation

30

QUAD CAR AUDIO BOOST AMPLIFIER

NJM2792

GENERAL DESCRIPTION The NJM2792 is a quad boost amplifier designed for car audio system. It expands the frequency characteristics by high slew rate.It can swing 14V peak-to-peak output voltage at 9V. It consists of four channel non-inverting amplifier with the gain of 8dB.It is suitable for car audio system and other boost amplifier system.

FEATURES Operating Voltage 6 to 12V Operating Current 16mA typ. Roll off High Frequency 100kHz typ. , at Gv=-1dB Maximum Output Voltage 5Vrms typ. , at f=100kHz Boost Output Function Vo=14Vpp, at V+=9V Supply Voltage Rejection Ratio 50dB typ. Low Total Harmonic Distortion0.003% typ. Low Noise Output Voltage 5Vrms typ. Bipolar Technology Package Outline SSOP20

PACKAGE OUTLINE

NJM2792V

BLOCK DIAGRAM

GND

COUT1

FL OUT

FB1

FL IN

FR IN

REF

FB3

FR OUT

COUT2

CIN1

RL OUT

FB2

RL IN

V+

RR IN

FB4

RR OUT

CIN2

GND

10F

22F 22F

10F

10F10F

22F 22F

1.5nF

1.5nF

RL=10kΩ

RL=10kΩ RL=10kΩ

RL=10kΩ33kΩ

22kΩ

22kΩ

33kΩ 33kΩ

33kΩ

22kΩ

22kΩ

1

2

3

4

5

6

7

8

9

10

11

20

19

18

17

16

15

14

13

12

36kΩ

24kΩ

36kΩ

24kΩ

60kΩ 60kΩ

60kΩ 60kΩ

44kΩ 24kΩ 46kΩ

44kΩ 24kΩ 46kΩ

Lift Amp

Signal Amp Signal Amp

Front-L Rear-L

Front-R Rear-R

Signal Amp Signal Amp

Lift Amp

+

+

+

+

+

+

+

+

+

+

+ 100nF47F

22F

220F

220F

U.D

.

P.16

Page 31: Products Presentation

31

Others

00:00 1ch00:00 1ch

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

OFFOFF

22SPEAKERSSPEAKERS

Page 32: Products Presentation

32

Audio Limiter

Page 33: Products Presentation

33

ROUT

LOUT

RIN

LIN ATT

ATT

Clipped output waveform

Excessive input signal

Optimized signal level without clipping

in conventional Systemin conventional System without NJM2761without NJM2761

Apply the NJM2761Apply the NJM2761

Application Example Application Example NJM2761NJM2761

Page 34: Products Presentation

34

NJM2761

PACKAGE OUTLINE

NJM2761RB2

Audio Limiter

FEATURES Operating Voltage 2.7 to 13V Limit Level 0.2 to 1Vrms Output Noise -90dBV Bipolar Technology Package Outline TVSP10

Vcc

INT SENSE

OUTb

OUTa

INb

INa

Vref

SW

BLOCK DIAGRAM

GENERAL DESCRIPTION The NJM2761 is the audio limiter for speaker protection.It includes input level detector and attenuator for volume control at excessive input signal. The limit level is adjustableby external resistor. It is suitable for audio equipments processing wide dynamic range signal or using small speakers with narrowdynamic range.

P.17

Page 35: Products Presentation

35

Band Pass Filtersfor Spectrum Analyzer

Page 36: Products Presentation

36

Application Example Application Example NJM2760NJM2760

C

A/D

V+

GND DET

BPF1

BPF3

DET

DET

DET

DET BPF2

BPF4

NJM2760

VFD/LCDDriver

EVR

Power Amp

Page 37: Products Presentation

37

NJM2760

GENERAL DESCRIPTION The NJM2760 is a Band Pass Filters for Spectrum Analyzer. It includes 4-band BPF amplifier, 4-band detector and recording level indicator output. It works perfectly with 3.3V operated micro controller. It is suitable for level meter of audio components.

PACKAGE OUTLINE

NJM2760V

BLOCK DIAGRAM

Band Pass Filters for Spectrum Analyzer

FEATURES Operating Voltage 2.7 to 9V 4-BPF + Detector Recording Level Indicator Low Offset Voltage 5mV typ. Adjustable Input Sensitivity Bipolar Technology Package Outline SSOP20 L in

R in

REC out

BPF2 out

BPF3 out

BPF4 out

BPF1 out

BPF

BPF

BPF

DET

DET

DET

DET

DET

GND

V+ BPF

200kΩ

200kΩ

200kΩ

200kΩ

5.6kΩ 10kΩ 6.8kΩ

22nF 47nF 4.7nF

470pF

1μF

1μF

1μF

1μF

1μF

1μF

1μF

1μF

P.18

Page 38: Products Presentation

38

Thank you very much!

[email protected]