User Guide

PAMS
Technical Documentation
NSB–1
System Module
Page 3 – 27
Original 06/98
Power Distribution – Maximum Currents
RX mixer UHF
LNA
VR1 VCTCXO
VR3
VR4
VHF predivider
UHF predivider
charge pump
Dividers
UHF VCO + buffer
VHF VCO
UHF buffer RX+TX
VHF buffer + mix2
VR5
Receiver
detector/temp
TX upconverter
VR7
Transmitter
13mA
4mA
2mA
10.2mA
11mA
0.6mA
2mA
25mA
7mA
14mA
36.6mA
150 mA
70mA
37.5mA
battery TX PA
CRFU2a (V_RX)
PLUSSA (VP1)
PLUSSA (VP2)
PLUSSA (VCE1)
PLUSSA (VDD)
CRFU2a (V_UHF)
CRFU2a (V_VHF)
PLUSSA (VRX)
CRFU2a (V_TX)
PLUSSA (VTX)
RXPWR
VCXOEN
SYNPWR
TXPWR
TXP
1.6mA
1.32A
VVCXO
VSYN_D
VSYN_A
VRX
VBAT
VTX
29mA
External
transistor
V5V
V5V
PA 45%
max. output
(32.5dBm)
Vbat=3.0V
charge pump
PLUSSA (VCE2)
0.6mA
PLUSSA (VOP)
TX buffer
Pwrcntrl opamp
2.65mA
15mA
NOTE: Currents are only estimates at this time
VCTCXO buffer
1mA
PA gain control
70mA
VR2
VDET