SKY72300-21 Datasheet, PDF (16/23 Pages) Skyworks Solutions Inc. – SKY72300-21: Spur-Free, 2.1 GHz Dual Fractional-N Frequency Synthesizer

DATA SHEET • SKY72300-21 FREQUENCY SYNTHESIZER
Table 5. SKY72300-21 Signal Descriptions (2 of 2)
Pin #
Pin Name
Type
Description
19 VCCcp_aux (Note 1) Power and ground Auxiliary charge pump supply, 3 to 5 V. Removing power safely powers down the associated divider chain
and charge pump.
20 CPout_aux
Analog output
Auxiliary charge pump output. The gain of the auxiliary charge pump phase detector is controlled by the
Phase Detector/Charge Pump Control Register.
21 GNDcp_aux (Note 1) Power and ground Auxiliary charge pump ground.
22 Fvco_aux
Input
Auxiliary VCO complimentary differential input.
23 Fvco_aux
Input
Auxiliary VCO differential input.
24 VCCcml_aux
(Note 1)
Power and ground ECL/CML, 3 V. Removing power safely powers down the associated divider chain and charge pump.
25 GNDdigital (Note 1) Power and ground Digital ground.
26 VCCdigital (Note 1) Power and ground Digital 3 V.
27 Data
Digital input
Serial address and data input pin. Address bits are followed by data bits.
28 CS
Digital input
Active low enable pin. Enables loading of address and data on the Data pin on the rising edge of Clock.
When CS goes high, data is transferred to the register indicated by the address. Subsequent clock edges
are ignored.
Note 1: Associated pairs of power and ground pins must be decoupled using 0.1 PF capacitors.
Table 6. Absolute Maximum Ratings
Maximum analog RF supply voltage
Parameter
Maximum digital supply voltage
Maximum charge pump supply voltage
Storage temperature
Operating temperature
Min
–65
–40
Max
3.6
3.6
5.25
+150
+85
Units
VDC
VDC
VDC
°C
°C
Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal values. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
Table 7. Recommended Operating Conditions
Parameter
Analog RF supplies
Digital supply
Charge pump supplies
Operating temperature (TA)
Note 1: When power steering is enabled, the charge pump must be 4.5 V maximum.
Min
2.7
2.7
2.7
–40
Max
3.3
3.3
5.0 (Note 1)
+85
Units
VDC
VDC
VDC
°C
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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September 11, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 101217N