Nokia NPL-4 Series Manual page 19

Nokia Customer Care
Table 4: AC and DC Characteristics of DCT4 RF-Baseband Voltage Supplies
Signal From
name
VBAT Battery
VR1A UEMEK
VR1B
VR2 UEMEK
VR3 UEMEK
VR4 UEMEK
VR5 UEMEK
Copyright © 2005 Nokia Corporation. All rights reserved.
Issue 2 05/05
To Parameter Min
PA & Voltage
UEMEK
Current
Current
drawn by
PA when
"off"
HELGO85 Voltage
Current
Noise
density
HELGO85 Voltage
Current
Noise
density
f=100Hz
f>300Hz
VCTCXO, Voltage
HELGO85
Current
Noise
density
HELGO85 Voltage
Current
Noise
density
f=6Hz
f=60Hz
f>600Hz
HELGO85 Voltage
Current
Noise
density
BW=100Hz.
.. 100kHZ
System Module and User Interface
Typ Max
2.95 3.6 4.2 V
2000 MA
0.8 2 µA
4.6 4.75 4.9 V
2 10 MA
240 nVrms/
sqrt(Hz)
2.7 2.78 2.86 V
65 100 MA
120 nVrms/
sqrt(Hz)
2.7 2.78 2.86 V
1 20 MA
240 nVrms/
sqrt(Hz)
2.7 2.78 2.86 V
50 MA
5500 nVrms/
sqrt(Hz)
550
55
2.7 2.78 2.86 V
50 MA
240 nVrms/
sqrt(Hz)
NPL-4/5/
Unit Function
Battery
supply. Cut-
off level of
DCT4
regulators
is 3.2V.
Losses in
PWB tracks
and ferrites
are taken
account to
minimum
battery
voltage
level.
Supply for
charge
pump for
SHF VCO
tuning.
Supply for
I/Q-
modulators,
buffers, ALS
Supply for
VCTCXO,
PLL digital
parts
Supply for
HELGO85R
X; PA bias
blocks.
Noise
density
decades
20dB/deg
from 6Hz to
600 Hz.
From
f>600Hz
max. noise
density
nVrms/
sqrt(Hz)
Supply for
HELGO85PL
L; dividers,
LO- buffers,
prescaler,
Page 19