ADF4116BRUZ-REEL7

Overview

The ADF4116BRUZ-REEL7 is an Integer-N RF PLL frequency synthesizer from Analog Devices, designed for local oscillator implementation in wireless communication systems. It features a dual-modulus prescaler with an 8/9 ratio, supporting RF input frequencies from 80 MHz to 550 MHz. The device operates on a single power supply ranging from 2.7 V to 5.5 V, with a typical operating current of 4.5 mA at 3 V. Key internal components include a low-noise digital phase-frequency detector, a precision charge pump with selectable gain (250 µA or 1 mA), and programmable counters. It utilizes a 3-wire serial interface for register control and includes features such as Fastlock mode, power-down capability, and digital/analog lock detect outputs.

Feature Summary

• RF Input Frequency Range: 80 MHz to 550 MHz
• Dual-Modulus Prescaler: 8/9 configuration
• Power Supply: 2.7 V to 5.5 V; Typical Current: 4.5 mA
• Charge Pump Gain: Selectable between 250 µA and 1 mA
• Fastlock Mode: Reduces PLL acquisition time

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

Procurement Notes

Verify the specific suffix REEL7 indicates reel packaging when sourcing. Confirm the B version temperature range (-40°C to +85°C) matches application requirements. Ensure the 16-pin TSSOP package footprint aligns with PCB design constraints. Cross-reference the datasheet Rev. D specifications for accurate electrical parameters during integration.

Selection Notes

Select the ADF4116 variant specifically for applications requiring RF inputs up to 550 MHz. Compare against ADF4117 (1.2 GHz) and ADF4118 (3.0 GHz) if higher frequency synthesis is needed. Consider the Y grade (-40°C to +125°C) if extended industrial temperature operation is required. Evaluate loop filter design based on the available charge pump currents (250 µA or 1 mA).

Part Context

This component belongs to the ADF411x family of frequency synthesizers, which shares a common architecture including the 3-wire interface, dual-modulus prescaler structure, and register map. The ADF4116 is distinguished by its lower maximum RF input frequency compared to the ADF4117 and ADF4118 models within the same series.

Replacement Considerations

ADF4117BRUZ offers similar functionality with a higher RF input limit of 1.2 GHz. ADF4118BRUZ provides support up to 3.0 GHz. Both share the same pinout and interface but differ in prescaler modulus (32/33 vs. 8/9) and maximum operating frequency.