Datasheet

MAX2870
23.5MHz to 6000MHz Fractional/
Integer-N Synthesizer/VCO
6Maxim Integrated
Typical Operating Characteristics (continued)
(Measured with MAX2870 EV Kit. V
CC_
= 3.3V, V
GND_
= 0V, f
REF_IN
= 50MHz, T
A
= +25°C, see the Testing Conditions Table.)
1k100101 10k
MAX2780 toc10
FREQUENCY (kHz)
PHASE NOISE (dBc/Hz)
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-170
2113.5MHz FRACTIONAL-N PHASE NOISE
vs. FREQUENCY (LOW-SPUR MODE)
1k100101 10k
MAX2780 toc11
FREQUENCY (kHz)
PHASE NOISE (dBc/Hz)
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-170
2679.4MHz FRACTIONAL-N PHASE NOISE
vs. FREQUENCY (LOW-NOISE MODE)
SUPPLY CURRENT vs. OUTPUT POWER
SETTING (ONE CHANNEL ACTIVE, 3GHz)
MAX2780 toc13
SUPPLY CURRENT (mA)
70
80
90
100
110
120
130
140
60
PWR SETTING
00 01 10 11
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
1k100101 10k
MAX2780 toc12
FREQUENCY (kHz)
PHASE NOISE (dBc/Hz)
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-170
2679.4MHz FRACTIONAL-N PHASE NOISE
vs. FREQUENCY (LOW-SPUR MODE)
SUPPLY CURRENT vs. FREQUENCY
(ONE CHANNEL ACTIVE,
MAXIMUM OUTPUT POWER)
MAX2780 toc14
FREQUENCY (MHz)
SUPPLY CURRENT (mA)
1k100
70
90
110
130
150
170
190
210
230
250
50
10 10k
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
SUPPLY CURRENT vs. OUTPUT POWER
SETTING (TWO CHANNELS ACTIVE)
MAX2780 toc15
SUPPLY CURRENT (mA)
180
80
PWR SETTING
00 01 10 11
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
90
100
110
120
130
140
150
160
170