Rf Frequency Plan; Dc Characteristics; Regulators; Control Signals (Typical Current Consumption In Different Modes) - Nokia NSB-6 Series Technical Documentation Manual

NSB–6
System Module

RF Frequency Plan

925–960
MHz
1930–1990
MHz
880–915
MHz
1850–1910
MHz

DC characteristics

Regulators

Transceiver has a multi function power management IC at baseband sec-
tion, which contains among other functions, also 7 pcs of 2.8 V regulators.
All regulators can be controlled individually with 2.8 V logic directly or
through control register. In GSM direct controls are used to get fast
switching, because regulators are used to enable RF–functions.
VREF_2 from CCONT IC and RXREF from COBBA IC are used as the
reference voltages for HAGAR RF–IC, VREF_2 (1.5V) for bias reference
and RXREF (1.2V) for RX ADC's reference.

Control signals (typical current consumption in different modes)

VXCOPWR SYNTHPWR RXPWR TXPWR TXP
L L
H H
H H
H H
H H
Page 40
HAGAR
f f
f/2 f/2
f
f/2
PLL
f
f/2
f
f/2
L L L
L L L
H L L
L H L
L H H
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
I–signal I–signal I–signal I–signal
Q–signal
3520–
3980
MHz
26 MHz
VCTCXO
13 MHz
I–signal
Q–signal
Typ. cur- Notes
rent cons.
<10 uA Leakage current ( PA )
28 mA Synthesizer
81 mA RX active
138 mA TX active except PA
1900 mA TX active, full power
Issue 1 06/2000
RX
TX