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).

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

APPLICATIONS

Base Stations for Wireless Radio (GSM, PCS, DCS, CDMA, WCDMA)

Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)

Wireless LANS

Communications Test Equipment

CATV Equipment

ADF4118属于集成电路（IC） > 时钟发生器，PLL，频率合成器。亚德诺半导体技术有限公司制造生产的ADF4118时钟发生器，PLL，频率合成器时钟发生器、PLL 和频率合成器集成电路 (IC) 可为逻辑器件提供参考信号的稳定定时脉冲，这些器件包括计算机、微控制器、数据通信系统和图形/视频发生器。这些集成电路可能包括缓冲器、驱动器、分频器、倍频器、多路复用器、合成器、扇出分配器和预分频器。