Nokia NKC-1X Series Technical Documentation Manual page 46

NKC-1X
System Module
for UHF and VHF PLLs and as a baseband clock signal. All RF locals are generated in PLLs.
Due to AMPS mode simultaneous reception and transmission, TX and RX IF frequencies
are exactly 45MHz apart from each other. RXIF is 135.54 MHz and TXIF 180.54 MHz.
UEM
VR1a
VR2
VR3
VR4
5 mA
VR5
5 mA
IPA1
VR7
VFLASH1
VREFRF01
VBATT 3.1-5.0 V
RXIF frequency is set so that it is not a multiple of either VHF's comparison frequency
(120k).
Page 46
1 mA
Pwr Det
1 mA
VCTCXO
PA 800
630 mA
10 mA
2G VCO
Nokia Corporation
CCS Technical Documentation
TACO
2 mA
UHF phasedet.
TX VHF VCO
2G TX mixer
38/36 mA
TX-IF
60 mA
1G TX mixer
0.9 mA
REF_in / REF_out
0.5 mA
biasing
6.0 mA
RX 1st mixer
12 mA
RX-IF
4.3/5.6 mA
LNA / LNA_bias
4.5 mA
TXVHF PLL
5.6 mA
RXVHF PLL
4.1/4.7 mA
RX 1st mixer
6.7/5.1 mA
UHF PLL
LO buff (2G TX mix)
10 /0mA
mixer
LO buff (1G TX mix)
mixer
0.8 mA
REF_in + PLLs
50 uA
bias reference
VCC_CP
VCC_TXMIX
VCC_TX
VCC_TXMIX
VCC_REF
VCC_RX
VCC_RX
VCC_RX
VCC_LNA
VCC_TX2
VCC_RX2
VCC_PLL
VCC_PLL
VCC_PLL
VCC_PLL
VCC_DIGI
VREF
Issue 1 02/03