SKY72301-22 Datasheet, PDF (17/21 Pages) Skyworks Solutions Inc. – Spur-Free, 1.0 GHz Dual Fractional-N Frequency Synthesizer

DATA SHEET • SKY72301-22 FREQUENCY SYNTHESIZER
Table 8. Electrical Characteristics (1 of 2)
(VDD = 3 V, TA = 25 °C, Unless Otherwise Noted)
Parameter
Symbol
Power Consumption
Total power consumption
PTOTAL
Power-down current
Reference Oscillator
Reference oscillator frequency
Oscillator sensitivity (as a buffer)
Frequency shift versus supply voltage
VCOs
Main synthesizer operating frequency
Auxiliary synthesizer operating frequency
RF input sensitivity
RF input impedance
Main fractional-N tuning step size
Auxiliary fractional-N tuning step size
Noise
Phase noise floor
ICC-PWDN
FOSC
VOSC
FSHIFT_SUPPLY
FVCO_MAIN
FVCO_AUX
VVCO
ZVCO_IN
∆FSTEP_MAIN
∆FSTEP_AUX
Pnf
Phase Detectors and Charge Pumps
Main phase detector frequency
Auxiliary phase detector frequency
Charge pump output source current
Charge pump output sink current
Charge pump accuracy
Charge pump output voltage linearity range
FREF_MAIN
FREF_AUX
ICP-SOURCE
ICP-SINK
ICP-ACCURACY
ICP vs VCP
Charge pump current versus temperature
ICP vs T
Charge pump current versus voltage
ICP vs VCP
Test Conditions
Min
Typ
Max
Charge pump currents of
200 µA. Both synthesizers
fractional,
FREF_MAIN = 20 MHz,
FREF_AUX = 1 MHz
Auxiliary synthesizer
power down
33
23
10 (Note 1)
50
AC coupled, single-ended
0.1
2.0
2.7 V ≤ VXTAL ≤ 3.3 V
±0.3
Sinusoidal, –40 °C to
+85 °C
Sinusoidal, –40 °C to
+85 °C
AC coupled, –40 °C to
+85 °C
100 (Note 2)
1000
100 (Note 2)
500
50
250
150 – j168 @
800 MHz
FREF_MAIN/2¹⁸ or FREF_MAIN/2¹⁰
FREF_AUX/2¹⁰
Measured inside the loop
bandwidth using 25 MHz
reference frequency,
–40 °C to +85 °C
–130
+ 20 Log (N)
–40 °C to +85 °C
25
–40 °C to +85 °C
25
VCP = 0.5 VCCCP
125
1000
VCP = 0.5 VCCCP
–125
–1000
±20
0.5 V ≤ VCP ≤ (VCCCP
– 0.5 V)
GND + 400
VCCCP – 400
VCP = 0.5 VCCCP
5
–40 °C < T < +85 °C
0.5 V ≤ VCP ≤ (VCCCP
8
– 0.5 V)
Units
mW
mW
µA
MHz
Vpp
ppm
MHz
MHz
mVpeak
Ω
Hz
Hz
dBc/Hz
MHz
MHz
µA
µA
%
mV
%
%
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200706B • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • May 21, 2007
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