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PS2500 2.2 GHz Fractional-N Frequency Synthesizer
- 16 -
Philsar Semiconductor Inc.
146 Colonnade Road S.
Nepean, Ontario, Canada
K2E 7Y1
Tel: 613-274-0922
Fax: 613-274-0915
www.philsar.com
PMP-001-DS2 V1.2
Table 3: Reference Oscillator
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Fosc
Reference oscillator frequency
-
-
-
50
MHz
Vosc
Oscillator sensitivity (as a buffer)
AC Coupled, single-ended
0.05
-
2.0
Vpp
Fshift_ship
Frequency shift at shipping
T = 25
°C, V
xtal = 3.0 V
With 1% tolerance 20 pF
crystal loading capacitors
-
-
± 3
ppm
Fshift_temp
Frequency shift vs temperature
-40
°C < T < +85°C
Vxtal = 3.0 V
-
-
± 3
Fshift_supply
Frequency shift vs supply voltage
T = 25
°C
2.7 V
≤ V
xtal ≤ 3.3 V
-
-
± 0.3
Table 4: VCOs
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Fvco_main
Main synthesizer operating
frequency
Sinusoidal
300
a
a.
When operating in integer mode, minimum main synthesizer frequency is 100 MHz
-
2200
MHz
Fvco_aux
Auxiliary synthesizer operating
frequency
300
b
b.
When operating in integer mode, minimum auxiliary synthesizer frequency is 100 MHz
-
500
Vvco
RF input sensitivity
AC Coupled
50
-
250
mVpeak
Zvco_in
RF input impedance
-
1000
-
Ω
∆F
step_main
Main Fractional-N tuning step size
-
Fref_main / 2
18 or F
ref_main / 2
10
Hz
∆F
step_aux
Aux Fractional-N tuning step size
-
Fref_aux / 2
10
Table 5: Noise
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Pnf
Phase noise floor
In PLL loop bandwidth
-
-132 +
20Log(N)
-
dBc/Hz
PIB
Total spurious power
-
-70
-
dBc
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