Datasheet

LTC6946
9
6946fa
LTC6946-3 Spurious Response
f
RF
= 900MHz, f
REF
= 10MHz,
f
PFD
= 1MHz, Loop BW = 40kHz
LTC6946-3 Spurious Response
f
RF
= 2200MHz, f
REF
= 10MHz,
f
PFD
= 0.4MHz, Loop BW = 28kHz
LTC6946-3 Spurious Response
f
RF
= 5700MHz, f
REF
= 100MHz,
f
PFD
= 1MHz, Loop BW = 33kHz
TYPICAL PERFORMANCE CHARACTERISTICS
T
C
= 25°C, V
REF
+
= V
REFO
+
= V
D
+
= V
RF
+
= 3.3V, V
CP
+
= V
VCO
+
= 5V, RFO[1:0] = 3,unless otherwise noted.
FREQUENCY OFFSET (MHz IN 10kHz SEGMENTS)
–10
–105dBc –103dBc
–111dBc –109dBc
–3
–140
P
OUT
(dBm)
–120
–100
–80
123
0
6946 G28
–2 –1 0 10
–60
–40
–20
RBW = 1Hz
VBW = 1Hz
NOTES 8, 13
FREQUENCY OFFSET (MHz IN 10kHz SEGMENTS)
–10
–93dBc –94dBc
–86dBc
–88dBc
–1.2
–140
P
OUT
(dBm)
–120
–100
–80
0.4 0.8 1.2
0
6946 G29
–0.8 –0.4 0 10
–60
–40
–20
RBW = 1Hz
VBW = 1Hz
NOTES 8, 13
FREQUENCY OFFSET (MHz IN 10kHz SEGMENTS)
–100
–101dBc
–113dBc
–96dBc
–92dBc
–3
–140
P
OUT
(dBm)
–120
–100
–80
123
0
6946 G30
–2 –1 0 100
–60
–40
–20
RBW = 1Hz
VBW = 1Hz
NOTE 13