NJW2303(2003) 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW2303
(Rev.:2003)

BASE BAND INTERFACE IC

Japan Radio Corporation  

NJW2303

BASE BAND INTERFACE IC

■ GENERAL DESCRIPTION

The NJW2303 is base band interface IC for cellular Phone

system. It consists of speaker amplifier with limiter and noise

canceller, microphone amplifier, and ringer driver. It also

includes power down function which applies to low

consumption power design.

The NJW2303 is suitable for PCS, cellular phone, and any

other handy wireless communication equipments.

■ PACKAGE OUTLINE

NJW2303F

■ FEATURES

● Operating Voltage

● Low Operating Current

● Internal Power-Down ON / OFF Switch

● Low Power-Down Operating Current

‹Power Amplifier›

● Output Power Exceeds 40mW

● Low Output Noise Voltage

● Input Limit Level

● Internal Noise Cancel AGC Function

‹Microphone Amplifier›

● Low Equivalent Input Noise Voltage

● Internal Three Steps Ringer Driver

● Bi-CMOS Technology

● Package Outline

(2.7 to 3.3V)

(2.2mA typ.)

(1µA MAX.)

(V+=3V, RL=32Ω)

(-100dBV typ.)

(-14dBV typ.)

(2µVrms typ.)

QFP32

■ PIN CONFIGURATION

PIN FUNCTION

1. MICREF

2. POWREF

3. MICIN1

4. MICIN2

5. MICIN3

6. MICOUT

7. SGND

8. POWIN1

9. POWIN2

10. POWIN3

11. POWFB

12. CRECT

13. TC1

14. NRREF

15. NRCNT

16. TC2

17. POWOUT1

18 PGND

19. POWOUT2

20. V+

21. RINOUT3

22. RINOUT2

23. RINOUT1

24. DGND

25. RININ

26. RINCNT1

27. RINCNT2

28. PD

29. REGSD

30. SMONI

31. SP / EAR

32. REGOUT

Ver.2003-12-09

-1-

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