ADF4111BRUZ-RL7

Overview

The ADF4111BRUZ-RL7 is a single-channel, integer-N phase-locked loop (PLL) frequency synthesizer from Analog Devices. It supports RF input frequencies up to 1.2 GHz and operates on a 2.7 V to 5.5 V power supply. The device integrates a low-noise digital phase-frequency detector, precision charge pump, programmable reference divider, and dual-modulus prescaler. Key electrical parameters include a maximum input frequency of 1.2 GHz, a minimum input frequency of 80 MHz, and a typical operating current of 4.5 mA at 5 V. It is housed in a 16-lead TSSOP package.

Feature Summary

• Supports RF input frequencies up to 1.2 GHz with a 2.7 V to 5.5 V supply range.
• Features a programmable dual-modulus prescaler (8/9, 16/17, 32/33, 64/65).
• Includes separate charge pump supply (VP) for extended tuning voltage in 3 V systems.
• Provides analog and digital lock detect functions via a 3-wire serial interface.

Applications

• Base stations for wireless radio (GSM, PCS, DCS, CDMA, WCDMA)
• Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
• Communications test equipment

Procurement Notes

Verify the specific suffix RL7 corresponds to the required reel packaging configuration. Confirm that the B version industrial temperature rating (-40°C to +85°C) meets system requirements. Ensure the 16-lead TSSOP footprint matches the PCB layout design before finalizing procurement.

Selection Notes

Select this component when an RF input frequency up to 1.2 GHz is required. The ADF4111 is part of a family where higher speed variants exist; ensure the 1.2 GHz limit is sufficient for the target application. Consider the separate VP pin if the system requires tuning voltages exceeding the main AVDD supply level.

Part Context

This part belongs to the ADF4110 family of RF PLL frequency synthesizers. The ADF4111 specifically targets applications requiring operation up to 1.2 GHz, distinguishing it from the ADF4110 (550 MHz), ADF4112 (3.0 GHz), and ADF4113 (4.0 GHz). All members share similar internal architectures and control interfaces.

Replacement Considerations

The ADF4110, ADF4112, and ADF4113 are functionally compatible within the same family but differ in maximum RF input frequency. Verify that the alternative variant's frequency range covers the specific application needs.