Datasheet

MAX2754
1.2GHz VCO with Linear
Modulation Input
4 _______________________________________________________________________________________
950
1000
1050
1100
1150
1200
1250
1300
1350
01.00.5 1.5 2.0 2.5 3.0
VCO TUNING CURVE
MAX2754 toc01
V
TUNE
(V)
FREQUENCY (MHz)
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
-600
-540
-560
-580
-520
-500
-480
-460
-440
-420
-400
1140 11801160 1200 1220 1240 1260
MODULATION SENSITIVITY vs.
CARRIER FREQUENCY
MAX2754 toc02
CARRIER FREQUENCY (MHz)
MODULATION SENSITIVITY (kHz/V)
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
0.2
0.6
0.4
0.8
1.0
-40 10-15 35 60 85
TUNE INPUT CURRENT
vs. TEMPERATURE
MAX2754 toc03
TEMPERATURE (°C)
TUNING INPUT CURRENT (nA)
-6.0
-5.0
-5.5
-4.0
-4.5
-3.5
-3.0
1140 1240 1260
OUTPUT POWER vs. FREQUENCY
MAX2754 toc04
FREQUENCY (MHz)
OUTPUT POWER (dBm)
11801160 1200 1220
V
CC
= +5.5V
V
CC
= +4.0V
V
CC
= +2.7V
-8
-6
-7
-4
-5
-3
-2
1140 1200 12201160 1180 1240 1260
OUTPUT POWER
vs. FREQUENCY
MAX2754 toc05
FREQUENCY (MHz)
OUTPUT POWER (dBm)
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
MAX2754 toc06
ƒ
O
3ƒ
O
OUTPUT POWER (dBm)
FREQUENCY
∆ = -20dBc
NORMALIZED HARMONIC
OUTPUT SPECTRUM
2ƒ
O
∆ = -30dBc
-160
-130
-140
-150
-120
-110
-100
-90
-80
-70
-60
10 100 1000 10,000
PHASE NOISE
MAX2754 toc07
OFFSET FREQUENCY (kHz)
PHASE NOISE (dBc/Hz)
-100
-70
-80
-90
-60
-50
-40
-30
-20
-10
0
02010 30 40 50
OSCILLATOR TURN-ON/
TURN-OFF TIME
MAX2754 toc08
TIME (µs)
OUTPUT POWER (dBm)
SHDN LOW-TO-HIGH
AT TIME = 0
SHDN HIGH-TO-LOW
AT TIME = 0
-20
-15
-10
-5
0
800 1000 1200 1400900 1100 1300 1500 1600
OUTPUT S
11
MAX2754 toc09
FREQUENCY (MHz)
S
11
(dB)
Typical Operating Characteristics
(MAX2754 EV kit, V
CC
= +3.0V, V
SHDN
≥ +2.0V, V
TUNE
= V
MOD
= +1.4V, and T
A
= +25°C, unless otherwise noted.)