GENERAL DESCRIPTION

The ADF4110 family of frequency synthesizers can be used to implement local oscillators in the upconversion and downconversion 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 (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).

FEATURES

ADF4110: 550 MHz; ADF4111: 1.2 GHz; ADF4112: 3.0 GHz;

ADF4113: 4.0 GHz

2.7 V to 5.5 V power supply

Separate charge pump supply (VP) allows extended tuning

voltage in 3 V systems

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

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

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

ADF4110BRU屬于集成電路（IC） > 時(shí)鐘發(fā)生器，PLL，頻率合成器。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的ADF4110BRU時(shí)鐘發(fā)生器，PLL，頻率合成器時(shí)鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號(hào)的穩(wěn)定定時(shí)脈沖，這些器件包括計(jì)算機(jī)、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動(dòng)器、分頻器、倍頻器、多路復(fù)用器、合成器、扇出分配器和預(yù)分頻器。