HD155111F Datasheet, PDF (11/44 Pages) Hitachi Semiconductor – RF Single-chip Linear IC for PCN Cellular Systems

HD155111F
Power saving is implemented through use of the idle mode. All function blocks of the HD155111F are
switched off until such time as the system controller commends the device to power up again.
Table 1 Operating Modes with Power Saving
Mode
switch
HD155111F
circuit status
POONRX1 (pin 1)
POONRX2 (pin 2)
POONTX (pin 7)
LNA bias
1st mixer
IF AMP
2nd mixer
AGC
IO demodulator
Divider (Rx.)
Divider (Tx.)
IO modulator
Offset PLL
RF 1st local buffer
IF local buffer
IFVCO
Total current
Receive
(Rx)
H
H
L
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
42.5 mA Typ
Calibrate
(Cal)
L
H
L
OFF
OFF
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
32 mA Typ
Warm-up
(Lo-ON)
L
L
L
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
10.5 mA Typ
Transmit
(Tx)
L
L
H
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
38 mA Typ
Idle
(PS)
H
L
Don’t care
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1 µA Typ
4.615ms
4.615ms
The slots of
PCN system
7012345670123456701
Rx
Tx
Mon
Rx
Tx
Mon
Cal
Cal
Cal
Cal
Operating modes
of the HD155111F
Rx
Lo-ON
Tx
Lo-
ON
Rx
Lo-
ON
Rx
Lo-ON
Tx
Lo-
ON
Rx
Lo-
ON
PS
POONRX1(pin 1)
POONRX2(pin 2)
POONTX (pin 7)
Idle(PS) mode don't care
Power Amplifier ON
UHF PLL synth. ON
UHF PLL synth. load
VCO control voltage
of UHF PLL synth.