SP5669 Datasheet, PDF (8/15 Pages) Mitel Networks Corporation – 2.7GHz I2C Bus Controlled Synthesiser

SP5669
RE
RTS TS2 TS1 TS0
REF/COMP OUTPUT
MODE
0
0
X
X
X
Disabled to high state
0
1
X
0
0
Disabled to high state
0
1
X
0
1
Disabled to high state
0
1
X
1
0
Disabled to high state
0
1
X
1
1
Disabled to high state
0
1
1
X
X
Disabled to high state
1
0
X
X
X
1
1
X
X
X
F _ref switched
F _comp switched
Test mode description
Normal operation
Charge pump sink.
Status byte FL = logic ‘1’
Charge pump source.
Status byte FL = logic ‘0’
Charge pump disabled.
Status byte FL=logic ‘0’
Port P0 = F pd /2
Varactor Drive Output
disabled
Normal operation
Normal operation
X=don’t care
Figure. 5 REF/COMP output mode and Test modes
C1
byte 5, bit 1
0
0
1
1
C0
byte 5, bit 2
0
1
0
1
min
±90
±195
±416
±900
Current in µA
typ
±120
±260
±555
±1200
Figure 6. Charge pump current
max
±150
±325
±694
±1500
300
VIN
(mV RMS
INTO 50 )
100
50
10
OPERATING
WINDOW
300
VIN
(mV RMS
INTO 50 )
100
50
10
OPERATING
WINDOW
80 100
1000
2000
FREQUENCY (MHz)
3000 3500
Figure. 7a Typical input sensitivity
(prescaler disabled, PE=0)
80 300
1000
2000
FREQUENCY (MHz)
3000 3500
2700
Figure. 7b Typical input sensitivity
(prescaler enabled, PE=1)
8