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MFG:AD  Package Cooled:TSOP20  D/C:2007+  

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Part Number: ADF4218

 

MFG: AD

Package Cooled: TSOP20

D/C: 2007+

Description: The ADF4216/ADF4217/ADF4218 are dual frequency synthesizers that can be used to implement local oscillators (LOs) in th...


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ADF4218 General Description


The ADF4216/ADF4217/ADF4218 are dual frequency synthesizers that can be used to implement local oscillators (LOs) in the upconversion and downconversion sections of wireless receivers and transmitters. They can provide the LO for both the RF and IF sections. They consist of a low-noise digital PFD (Phase Frequency Detector), a precision charge pump, a programmable reference divider, programmable A and B counters, and a dual-modulus prescaler (P/P+1). The A (6-bit) and B (11-bit) counters, in conjunction with the dual modulus prescaler (P/P+1), implement an N divider (N = BP + A). In addition, the 14-bit reference counter (R Counter), allows selectable REFIN frequencies at the PFD input. A complete PLL (Phase- Locked Loop) can be implemented if the synthesizers are used with an external loop filter and VCOs (Voltage Controlled Oscillators).

ADF4218 Maximum Ratings

VDD1 to GND3. . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to +7 V
VDD1 to VDD2  . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +0.3 V
VP1, VP2 to GND  . . . . . . . . . . . . . . . . . . . . . .0.3 V to +7 V
VP1, VP2 to VDD1  . . . . . . . . . . . . . . . . . . . 0.3 V to +5.5 V
Digital I/O Voltage to GND  . . . . . .    0.3 V to DVDD + 0.3 V
Analog I/O Voltage to GND  . . . . . . . . . 0.3 V to VP + 0.3 V
REFIN, RFINA, RFINB,
IFINA, IFINB 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
TSSOP JA Thermal Impedance  . . . . . . . . . . . . 150.4°C/W

ADF4218 Features

ADF4216: 550 MHz/1.2 GHz
ADF4217: 550 MHz/2.0 GHz
ADF4218: 550 MHz/2.5 GHz
2.7 V to 5.5 V Power Supply
Selectable Charge Pump Currents
Selectable Dual Modulus Prescaler
  IF: 8/9 or 16/17
  RF: 32/33 or 64/65
3-Wire Serial Interface
Power-Down Mode

ADF4218 Typical Application

Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)
Base Stations for Wireless Radio (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANS
Communications Test Equipment
CATV Equipment

ADF4218 Connection Diagram

ADF4218 Connection Diagram

ADF4218 datasheet

ADF4218
PDF/DataSheet Download

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