Datasheet

MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
3
Note 1: Specifications are production tested at T
A
= +25°C. Limits over temperature are guaranteed by design and characterization.
Note 2: Tuning gain is measured at the oscillator’s guaranteed frequency limits.
Note 3: Turn-on time to within 3dB of final output power
Note 4: Turn-off time to output power of -10dBm.
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 50Ω load,
T
A
= +25°C. Typical values are at V
CC
= +3.0V, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Pulling VSWR = 2:1, all phases 4 MHzp-p
Supply Pushing
V
CC
stepped: +3.3V to +2.8V
1.3 MHz/V
Oscillator Turn-On Time (Note 3) Exiting shutdown 8 μs
Oscillator Turn-Off Time (Note 4) Entering shutdown 5 μs
MAX2750/51/52 toc01
7
8
10
9
13
14
12
11
15
SUPPLY CURRENT (mA)
-40 0 20-20 40 60 80
TEMPERATURE (°C)
MAX2750/MAX2751/MAX2752
SUPPLY CURRENT vs. TEMPERATURE
MAX2750
MAX2752
MAX2751
0
0.1
0.3
0.2
0.4
0.5
-40 0-20 20 40 60 80
MAX2750/51/52 toc02
TEMPERATURE (°C)
SHUTDOWN CURRENT (μA)
MAX2750/MAX2751/MAX2752
SHUTDOWN CURRENT vs. TEMPERATURE
MAX2750/51/52 toc03
0
0.2
0.4
0.8
0.6
1.0
TUNE INPUT CURRENT (nA)
-40 0 20-20 40 60 80
TEMPERATURE (°C)
MAX2750/MAX2751/MAX2752
TUNING CURRENT vs. TEMPERATURE
2200
2300
2400
2500
2600
0 1.00.5 1.5 2.0 2.5 3.0
MAX2750/51/52 toc04
V
TUNE
(V)
FREQUENCY (MHz)
MAX2750
VCO TUNING CURVE
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
1850
1950
2050
2150
2250
2350
0 0.5 1.0 1.5 2.0 2.5 3.0
MAX2750/51/52 toc05
V
TUNE
(V)
FREQUENCY (MHz)
MAX2751
VCO TUNING CURVE
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
1850
1950
2050
2150
2250
2350
0 0.5 1.0 1.5 2.0 2.5 3.0
MAX2750/51/52 toc06
V
TUNE
(V)
FREQUENCY (MHz)
MAX2752
VCO TUNING CURVE
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
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.)