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MFG:ADI D/C:09
Part Number: ADF4252
MFG: ADI
D/C: 09
Description: The ADF4252 is a dual fractional-N/integer-N frequency synthesizer that can be used to implement local...
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ADF4252
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DataSheet
General Description
ADF4252 General Description
The ADF4252 is a dual fractional-N/integer-N frequency synthesizer that can be used to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters. Both the RF and IF synthesizers consist of a low noise digital PFD (phase frequency detector), a precision charge pump, and a programmable reference divider. The RF synthesizer has a --based fractional interpolator that allows programmable fractional-N division. The IF synthesizer has programmable integer-N counters. A complete PLL (phase-locked loop) can be implemented if the synthesizer is used with an external loop filter and VCO (voltage controlled oscillator).
Control of all the on-chip registers is via a simple 3-wire interface. The devices operate with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use.
ADF4252 Maximum Ratings
VDD1, VDD2, VDD3, DVDD to GND3 . . . . . . .. 0.3 V to +4 V
REFIN, RFINA, RFINB to GND . . . . . . 0.3 V to VDD + 0.3 V
VP1, VP2 to GND . . . . . . . . . . . . . . . . . . . 0.3 V to +5.8 V
VP1, VP2 to VDD1 . . . . . . . . . . . . . . . . . . . 3.3 V to +3.5 V
Digital I/O Voltage to GND . . . . . . . . 0.3 V to VDD + 0.3 V
Analog I/O Voltage to GND . . . . . .. . 0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . .. . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . 65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . 150°C
CSP JA Thermal Impedance . . . . . . . . . . . . . . . . 122°C/W
Soldering Reflow Temperature
Vapor Phase (60 sec max) . . . . . . . . . . . . . . . . . . 240°C
IR Reflow (20 sec max) . . . . . . . . . . . . . . . . . . . . . 240°C
REFIN, RFINA, RFINB to GND . . . . . . 0.3 V to VDD + 0.3 V
VP1, VP2 to GND . . . . . . . . . . . . . . . . . . . 0.3 V to +5.8 V
VP1, VP2 to VDD1 . . . . . . . . . . . . . . . . . . . 3.3 V to +3.5 V
Digital I/O Voltage to GND . . . . . . . . 0.3 V to VDD + 0.3 V
Analog I/O Voltage to GND . . . . . .. . 0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . .. . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . 65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . 150°C
CSP JA Thermal Impedance . . . . . . . . . . . . . . . . 122°C/W
Soldering Reflow Temperature
Vapor Phase (60 sec max) . . . . . . . . . . . . . . . . . . 240°C
IR Reflow (20 sec max) . . . . . . . . . . . . . . . . . . . . . 240°C
ADF4252 Features
3.0 GHz Fractional-N/1.2 GHz Integer-N
2.7 V to 3.3 V Power Supply
Separate VP Allows Extended Tuning Voltage to 5 V
Programmable Dual Modulus Prescaler
RF: 4/5, 8/9
IF: 8/9, 16/17, 32/33, 64/65
Programmable Charge Pump Currents
3-Wire Serial Interface
Digital Lock Detect
Power-Down Mode
Programmable Modulus on Fractional-N Synthesizer
Trade-Off Noise versus Spurious Performance
2.7 V to 3.3 V Power Supply
Separate VP Allows Extended Tuning Voltage to 5 V
Programmable Dual Modulus Prescaler
RF: 4/5, 8/9
IF: 8/9, 16/17, 32/33, 64/65
Programmable Charge Pump Currents
3-Wire Serial Interface
Digital Lock Detect
Power-Down Mode
Programmable Modulus on Fractional-N Synthesizer
Trade-Off Noise versus Spurious Performance
ADF4252 Typical Application
Base Stations for Mobile Radio (GSM, PCS, DCS, CDMA, WCDMA)
Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANs
Communications Test Equipment
CATV Equipment
Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANs
Communications Test Equipment
CATV Equipment
ADF4252 Connection Diagram
ADF4252
PDF/DataSheet Download
- Datasheet: ADF4252
- File Size: 819585 KB
- Manufacturer: AD
- Click here to Download
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