ADF4216 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).
ADF4216 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
ADF4216 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
ADF4216 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
ADF4216 Connection Diagram
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