Purchase ADF4251, In-stock ADF4251 From SeekIC.
Part Number: ADF4251
Description: The ADF4251 is a dual fractional-N/integer-N frequency synthesizer that can be used to implement local...
- Table of contents:
ADF4251
-
Suppliers
DataSheet
General Description
ADF4251 General Description
The ADF4251 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.
ADF4251 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
LFCSP 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
LFCSP JA Thermal Impedance . . . . . . . . . . . . . . . . 122°C/W
Soldering Reflow Temperature
Vapor Phase (60 sec max) . . . . . . . . . . . . . . . . . . . . . 240°C
IR Reflow (20 sec max) . . . . . . . . . . . . . . . . . . . . . . . 240°C
ADF4251 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
·Software and Hardware Power-Down
·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
·Software and Hardware Power-Down
ADF4251 Typical Application
·Base Stations for Mobile Radio (GSM, PCS, DCS, CDMA, WCDMA)
·Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA, PHS)
·Wireless LANs
·Communications Test Equipment
·CATV Equipment
·Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA, PHS)
·Wireless LANs
·Communications Test Equipment
·CATV Equipment
ADF4251 Connection Diagram
ADF4251
PDF/DataSheet Download
- Datasheet: ADF4251
- File Size: 445611 KB
- Manufacturer:
- Click here to Download
- ·ADF4001
- AD [Analog Devices]
- 200 MHz Clock Generator PLL
- 195241 KB
- ·ADF4001BCP
- AD [Analog Devices]
- 200 MHz Clock Generator PLL
- 195241 KB
- ·ADF4001BRU
- AD [Analog Devices]
- 200 MHz Clock Generator PLL
- 195241 KB
- ·ADF4002
- 454156 KB
- ·ADF4007
- AD [Analog Devices]
- High Frequency Divider/PLL Synthesizer
- 400216 KB
- ·ADF4007BCP
- AD [Analog Devices]
- High Frequency Divider/PLL Synthesizer
- 400216 KB
- ·ADF4007BCP-REEL
- AD [Analog Devices]
- High Frequency Divider/PLL Synthesizer
- 400216 KB
- ·ADF4007BCP-REEL7
- AD [Analog Devices]
- High Frequency Divider/PLL Synthesizer
- 400216 KB
ADF4251 Relative Products
ADF4219LBRU-REEL7
IC PLL FREQ SYNTHESIZER 20-TSSOP
-
ADF4219LBRU-REEL
IC PLL FREQ SYNTHESIZER 20-TSSOP
-
ADF4219LBRU
IC SYNTH FREQ DUAL LP 20-TSSOP
ADF4219LBCC-REEL7
IC PLL FREQ SYNTHESIZER 24-LGA
ADF4219LBCC-REEL
IC PLL FREQ SYNTHESIZER 24-LGA
ADF4219LBCC
IC PLL FREQ SYNTHESIZER 24-LGA
Hotspot Suppliers Product
PC87541V-VPC
Price: 1-2 USD
LQFP, 50 mA, photocoupler, 200 mW Power dissipation, 80 mA Collector current, Low collector dark c...
SN74LVC1G32DBVR
Price: 0.1-1 USD
positive-OR gate, SOT, -0.5 V to 6.5 V
AT29C020-90JU
Price: 1.3-3 USD
PEROM, PLCC32, -0.6V to +6.25V, 5-volt Only Reprogramming, Hardware and Software Data Protection
AD8314ACPZ-RL7
Price: 1-1.5 USD
8-LFCSP, low cost subsystem, Detector, Controller
INA101SM
Price: 12-13 USD
high accuracy instrumentation amplifier, 25μV, DIP
FAN7314A
Price: 0.58-0.72 USD
SOP-20, Soft Start, Open Lamp Protection, PWM, 20-Pin SOIC, 22V
NSTB1002DXV5T1
Price: 0.001-5 USD
Bias Resistor Transistor, SOT553, -40 to 50 Vdc, -200 to 100 mAdc, Pb-Free
UPA1458H
Price: 1-2 USD
Transistor Array, ZIP, 60 ±10 V, ±5 A/unit, High hFE, Easy mount, Surge Absorber
BZY93C9V1
Price: 1-1 USD
DO-4, regulator diodes, diffused silicon diodes
AD9381KSTZ-150
Price: 3.5-4.5 USD
HDMI TM display interface, 3.6 V, QFP
MC9S12DG128CFUE
Price: 3.3-3.9 USD
IC MCU 128K FLASH 2K EE 80-QFP - MC9S12DG128CFUE
AIC1526-0PSTR
Price: 0.25-0.3 USD
dual high-side power switch, 500mA, 110mΩ, 5V, SOP, Open-Drain Fault Flag
