User Guide

NSD-5
3. System Module PAMS Technical Documentation
Page 46 Nokia Corporation Issue 1 05/02
Table 15: PCS 1900MHz Downconverter Specs
Interstage SAW Filter
The Rx interstage filter used is Z702. Insertion loss = 4.1dB.
Attenuation
DC - 1700MHz = 20dB
1850MHz - 1910MHz = 15dB
2058MHz - 2118MHz = 15dB
2186MHz - 2246MHz = 22dB
2246MHz - 6000MHz = 10dB
IF SAW Filter
The IF SAW filter used is Z703.
Key Parameters
Receiver Intermediate Frequency (RIF)
The RIF IC incorporates the following functions: CDMA AGC, IQ Demodulator. These func-
tions are explained in the sections that follow. The RIF IC is powered from the VR3 regu-
lator from CCONT and consumes approximately 24mA of current. The RIF IC reference
designator (N730) is packaged in an LFBGA 36.
Min LO drive -7dBm
Max LO drive -3dBm
Gain =16dB
NF =4dB
IIP
3
2dBm
Current =13mA
Center frequency 128.1MHz
Insertion loss 6dB to 10dB
3dB pass bandwidth +/- 615KHz
Attenuation +/- 1.25MHz 37dB