ADF4117 General Description
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.
ADF4117 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
ADF4117 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
ADF4117 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
ADF4117 Connection Diagram
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