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MAX2870
23.5MHz to 6000MHz Fractional/
Integer-N Synthesizer/VCO
AC ELECTRICAL CHARACTERISTICS (continued)
(Measured using MAX2870 EV Kit. V CC_ = 3V to 3.6V, V GND_ = 0V, f REF_IN = 50MHz, f PFD = 25MHz, f RFOUT_ = 6000MHz,
T A = -40 N C to +85 N C. Typical values measured at V CC_ = 3.3V, T A = +25 N C, register settings 00780000,20000141,01005E42,00000
013,610F423C,01400005; unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CHARGE PUMP
Sink/Source Current
R SET Range
CP[3:0] = 1111, R SET = 5.1k I
CP[3:0] = 0000, R SET = 5.1k I
2.7
5.12
0.32
10
mA
k I
RF OUTPUTS
Fundamental Frequency Range
3000
6000
MHz
Divided Frequency Range
VCO Sensitivity
Frequency Pushing
Frequency Pulling
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
Maximum Output Power
Minimum Output Power
Output Power Variation (Note 4)
Muted Output Power
With output dividers (1/2/4/8/16/32/64/128)
Open loop
Open loop into 2:1 VSWR
Fundamental VCO output
Fundamental VCO output
VCO output divided-by-2
VCO output divided-by-2
f RFOUT_ = 3000MHz (Note 4)
f RFOUT_ = 3000MHz (Note 4)
-40 N C P T A P +85 N C
3V P V CC_ P 3.6V
(Note 4)
23.4375
100
0.7
70
40
34
20
21
5
-4
1.5
0.2
-31
6000
MHz
MHz/V
MHz/V
KHz
dBc
dBc
dBc
dBc
dBm
dBm
dB
dBm
VCO AND FREQUENCY SYNTHESIZER NOISE
10kHz offset
-83.5
VCO at 3000MHz
100kHz offset
1MHz offset
5MHz offset
10kHz offset
-111
-136
-149
-75
VCO Phase Noise (Note 5)
VCO at 4500MHz
100kHz offset
1MHz offset
-104
-130
dBc/Hz
5MHz offset
10kHz offset
-145.5
-71.5
VCO at 6000MHz
100kHz offset
1MHz offset
5MHz offset
-100.5
-128.0
-143.5
In-Band Noise Floor
1/f Noise
In-Band Phase Noise
Integrated RMS Jitter
Spurious Signals Due to PFD Frequency
VCO Tune Voltage
Maxim Integrated
Normalized (Note 6)
Normalized (Note 7)
(Note 8)
(Note 9)
0.5
-226.4
-116
-95
0.25
-87
2.5
dBc/Hz
dBc/Hz
dBc/Hz
ps
dBc
V
3
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