SKY72300-21 Datasheet, PDF (17/23 Pages) Skyworks Solutions Inc. – SKY72300-21: Spur-Free, 2.1 GHz Dual Fractional-N Frequency Synthesizer

DATA SHEET • SKY72300-21 FREQUENCY SYNTHESIZER
Table 8. Electrical Characteristics (Note 1) (1 of 2)
(VDD = 3 V, TA = 25 qC, 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
Units
Charge pump currents of
37.5
mW
200 PA. Both synthesizers
fractional,
FREF_MAIN = 20 MHz,
FREF_AUX = 1 MHz
Auxiliary synthesizer
power down
27
mW
10 (Note 2)
PA
AC coupled, single-ended
0.1
2.7 V d VXTAL d 3.3 V
50
MHz
2.0
Vpp
r0.3
ppm
Sinusoidal, –40 qC to
+85 qC
Sinusoidal, –40 qC to
+85 qC
AC coupled
100 (Note 3)
2100
100 (Note 3)
500
50
250
94 – j140
@ 1200 MHz
FREF_MAIN/218 or FREF_MAIN/210
FREF_AUX/210
MHz
MHz
mVPEAK
:
Hz
Hz
Measured inside the loop
bandwidth using 25 MHz
reference frequency,
–40 qC to +85 qC
–128
+ 20 Log (N)
dBc/Hz
–40 qC to +85 qC
–40 qC to +85 qC
VCP = 0.5 VCCCP
VCP = 0.5 VCCCP
0.5 V d VCP d (VCCCP
– 0.5 V)
VCP = 0.5 VCCCP
–40 qC < T < +85 qC
0.5 V d VCP d (VCCCP
– 0.5 V)
125
–125
GND + 400
25
MHz
25
MHz
1000
PA
–1000
PA
±20
%
VCCCP – 400
mV
5
%
8
%
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
101217N • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 11, 2009
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