ADF4108集成电路（IC）的时钟发生器PLL频率合成器规格书PDF中文资料

ADF4108属于集成电路（IC）的时钟发生器PLL频率合成器。由亚德诺半导体技术有限公司制造生产的ADF4108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。

FEATURES

8.0 GHz bandwidth

3.2 V to 3.6 V power supply

Separate charge pump supply (VP) allows extended

voltage in 3.3 V systems

Programmable, dual-modulus prescaler 8/9, 16/17, 32/33, or 64/65

Programmable charge pump currents

Programmable antibacklash pulse width

3-wire serial interface

Analog and digital lock detect

Hardware and software power-down mode

Loop filter design possible with ADIsimPLL

4 mm × 4 mm, 20-lead chip scale package

APPLICATIONS

Broadband wireless access

Satellite systems

Instrumentation

Wireless LANs

Base stations for wireless radio

GENERAL DESCRIPTION

The ADF4108 frequency synthesizer can be used to implement local oscillators in the upconversion and downconversion sections of wireless receivers and transmitters. It consists 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 (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 phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). Its very high bandwidth means that frequency doublers can be eliminated in many high frequency systems, simplifying system architecture and reducing cost.