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2.4GHz Monolithic
Voltage-Controlled Oscillators
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2750/MAX2751/MAX2752 EV kit, V CC = +2.7V to +5.5V, V TUNE = +0.4V to +2.4V, V SHDN ≤ +2V, OUT = connected to 50 Ω load,
T A = +25°C. Typical values are at V CC = +3.0V, unless otherwise noted.)
PARAMETER
Load Pulling
Supply Pushing
Oscillator Turn-On Time (Note 3)
Oscillator Turn-Off Time (Note 4)
CONDITIONS
VSWR = 2:1, all phases
V CC stepped: +3.3V to +2.8V
Exiting shutdown
Entering shutdown
MIN
TYP
4
1.3
8
5
MAX
UNITS
MHzp-p
MHz/V
μ s
μ s
Note 1:
Note 2:
Note 3:
Note 4:
Specifications are production tested at T A = +25 ° C. Limits over temperature are guaranteed by design and characterization.
Tuning gain is measured at the oscillator’s guaranteed frequency limits.
Turn-on time to within 3dB of final output power
Turn-off time to output power of -10dBm.
Typical Operating Characteristics
(Circuit of Figure 1, V CC = +3.0V, V TUNE = +0.4V to +2.4V, V SHDN ≤ 2V, T A = +25°C, unless otherwise noted.)
15
14
MAX2750/MAX2751/MAX2752
SUPPLY CURRENT vs. TEMPERATURE
0.5
MAX2750/MAX2751/MAX2752
SHUTDOWN CURRENT vs. TEMPERATURE
1.0
MAX2750/MAX2751/MAX2752
TUNING CURRENT vs. TEMPERATURE
13
12
MAX2750
0.4
0.3
0.8
0.6
11
10
9
MAX2752
MAX2751
0.2
0.1
0.4
0.2
8
7
0
0
-40
-20
0 20
40
60
80
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
2600
TEMPERATURE ( ° C)
MAX2750
VCO TUNING CURVE
2350
TEMPERATURE ( ° C)
MAX2751
VCO TUNING CURVE
2350
TEMPERATURE ( ° C)
MAX2752
VCO TUNING CURVE
2500
2400
T A = -40 ° C
T A = +25 ° C
2250
2150
T A = -40 ° C
T A = +25 ° C
2250
2150
T A = -40 ° C
2300
T A = +85 ° C
2050
1950
T A = +85 ° C
2050
1950
T A = +85 ° C
T A = +25 ° C
2200
1850
1850
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
V TUNE (V)
V TUNE (V)
V TUNE (V)
3
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