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The ADF4116 family of frequency synthesizers can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. 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 (5-bit) and B (13-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 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 5.5 V and can be powered down when not in use.
ADF4116 Maximum Ratings
AVDD to GND3 . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.3 V VP to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V VP to AVDD . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +5.5 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 VP + 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 CSP JA Thermal Impedance (Paddle Soldered) . . . . . . . . . . . . . . . . . . . . . . . . .122°C/W (Paddle Not Soldered) . . . . . . . . . . . . . . . . . . . . . .216°C/W
ADF4116 Features
ADF4116: 550 MHz ADF4117: 1.2 GHz ADF4118: 3.0 GHz 2.7 V to 5.5 V Power Supply Separate VP Allows Extended Tuning Voltage in 3 V Systems Selected Charge Pump Currents Dual Modulus Prescaler ADF4116: 8/9 ADF4117/ADF4118: 32/33 3-Wire Serial Interface Digital Lock Detect Power-Down Mode Fast Lock Mode
ADF4116 Typical Application
Base Stations for Wireless Radio (GSM, PCS, DCS,CDMA, WCDMA) Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA) Wireless LANS Communications Test Equipment CATV Equipment