Datasheet

MAX2870
23.5MHz to 6000MHz Fractional/
Integer-N Synthesizer/VCO
3Maxim Integrated
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
= -40NC to +85NC. Typical values measured at V
CC_
= 3.3V, T
A
= +25NC, 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
CP[3:0] = 1111, RSET = 5.1kI 5.12
mA
CP[3:0] = 0000, RSET = 5.1kI 0.32
RSET Range 2.7 10 kI
RF OUTPUTS
Fundamental Frequency Range 3000 6000 MHz
Divided Frequency Range With output dividers (1/2/4/8/16/32/64/128) 23.4375 6000 MHz
VCO Sensitivity 100 MHz/V
Frequency Pushing Open loop 0.7 MHz/V
Frequency Pulling Open loop into 2:1 VSWR 70 KHz
2nd Harmonic Fundamental VCO output 40 dBc
3rd Harmonic Fundamental VCO output 34 dBc
2nd Harmonic VCO output divided-by-2 20 dBc
3rd Harmonic VCO output divided-by-2 21 dBc
Maximum Output Power fRFOUT_ = 3000MHz (Note 4) 5 dBm
Minimum Output Power fRFOUT_ = 3000MHz (Note 4) -4 dBm
Output Power Variation (Note 4)
-40NC P TA P +85NC 1.5
dB
3V P VCC_ P 3.6V 0.2
Muted Output Power (Note 4) -31 dBm
VCO AND FREQUENCY SYNTHESIZER NOISE
VCO Phase Noise (Note 5)
VCO at 3000MHz
10kHz offset -83.5
dBc/Hz
100kHz offset -111
1MHz offset -136
5MHz offset -149
VCO at 4500MHz
10kHz offset -75
100kHz offset -104
1MHz offset -130
5MHz offset -145.5
VCO at 6000MHz
10kHz offset -71.5
100kHz offset -100.5
1MHz offset -128.0
5MHz offset -143.5
In-Band Noise Floor Normalized (Note 6) -226.4 dBc/Hz
1/f Noise Normalized (Note 7) -116 dBc/Hz
In-Band Phase Noise (Note 8) -95 dBc/Hz
Integrated RMS Jitter (Note 9) 0.25 ps
Spurious Signals Due to PFD Frequency -87 dBc
VCO Tune Voltage 0.5 2.5 V