The DHL214D is an integrated dual frequency synthesizer with prescaler. It consists of a dual-modulus prescaler, programmable program(P) and swallow(S) counter, programmable reference(R) counter, a phase frequency detector(PFD) and a charge pump. A PLL can be completely implemented with external loop filter and voltage controlled oscillator(VCO). It is available in a 16-pin TSSOP plastic package.

　　Features 

　　Two systems for transmitter and receiver 

　　Wide frequency range (50MHz to 1.4GHz) 

　　Wide supply voltage range (2.4V ~ 5.5V) 

　　Selectable charge pump current (0.2mA, 0.4mA, 0.8mA, 1.6mA) 

　　Selectable power down 

　　Lock detection 

　　3-wire serial interface 

　　GP214D compatible

　　DHL214D是一款带有预分频器的集成双频合成器。它由对偶模量、预分频器、可编程程序（P）和吞咽（S）计数器、可编程参考（R）计数器、相位频率检测器（PFD）和电荷泵组成。PLL可以完全用外部环路滤波器和压控振荡器（VCO）实现。它有16针TSSOP塑料包装。

　　特点

　　发射器和接收器的两个系统

　　宽频率范围（50MHz至1.4GHz）

　　电源电压范围宽（2.4V~5.5V）

　　可选择的电荷泵电流（0.2mA、0.4mA、0.8mA、1.6mA）

　　可选择断电

　　锁定检测

　　三线串行接口

　　GP214D兼容