ADF4110BRU

The ADF4110BRU is a versatile RF PLL Frequency Synthesizer manufactured by Analog Devices Inc. This component is designed for implementing local oscillators in wireless receivers and transmitters, finding applications in base stations, wireless LANs, and communications test equipment.

Key electrical specifications include a maximum frequency of 3.0 GHz and a wide operating power supply range from 2.7V to 5.5V. It features a programmable dual-modulus prescaler with options of 8/9, 16/17, 32/33, and 64/65. Control is managed via a convenient 3-wire serial interface. The device also offers analog and digital lock detect capabilities and a hardware/software power-down mode for efficient operation.

This frequency synthesizer family is built upon a low-noise digital Phase Frequency Detector (PFD), a precision charge pump, a programmable reference divider, and programmable A and B counters. These elements work together with the dual-modulus prescaler to implement an N divider (N = BP + A). A 14-bit reference counter allows for selectable REFIN frequencies at the PFD input, enabling the creation of a complete Phase-Locked Loop (PLL) when paired with an external loop filter and Voltage Controlled Oscillator (VCO).

The ADF4110BRU is suitable for surface mount applications. Its robust design and feature set make it a valuable component for engineers developing advanced wireless communication systems.