NJM2155

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PRELIMINARY

BBE Mach3Bass Audio Processor

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sBLOCK DIAGRAM & PIN CONFIGRATION

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sPACKAGE OUTLINE

NJM2155L

NJM2155M

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sGENERAL DESCRIPTION

NJM2155 is a BBE Mach3Bass processor, which includes

BBE sound enhancement and Mach3Bass system.

The

BBE

reproduces

high

definitive

and

Mach3BASS

provides rich and loss less bass sound.

The NJM2155 is suitable for audio items such as TV, AV

receiver, CD radio-cassette, speaker system, and others.

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sFEATURES

qOperating Voltage

4.7 to 13V

qLow Operating Current

15mA typ.

qInternal Mach3Bass ON/OFF Switch

qInternal High/Low Boost Switch

(Low Band: 2.5 or 5.5dB, High Band: 6.0 or 9.0dB)

q”Mach3Bass” Boot Switch and Center Frequency Control

qBipolar Technology

qPackage Outline

SDIP24, DMP24

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BBE

BBE

Mach3

Control

Bias

1. InA

2. HInA

3. HOutA

4. LInA

5. LOutA

6. OutA

7. Filter

8. BBE

9. PROCESS

10. LO CONTOUR

11. Mach3Bass

12. V+

13. GND

14. LPOut

15. LPIn

16. GOut

17. GIn

18. Vref

19. OutB

20. LOutB

21. LInB

22. HOutB

23. HInB

24. InB