NJW2303(2003) View Datasheet(PDF) - Japan Radio Corporation
Part Name
Description
Manufacturer
NJW2303 Datasheet PDF : 4 Pages
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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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