ADF4118BRUZ-RL7

Overview

The ADF4118BRUZ-RL7 is an Integer-N RF PLL frequency synthesizer from Analog Devices, designed for local oscillator generation in wireless transceivers. It features a dual-modulus prescaler (32/33) supporting RF input frequencies up to 3.0 GHz. The device integrates a low-noise digital phase-frequency detector, precision charge pump, and programmable counters (R, A, B). Operating on a single supply of 2.7 V to 5.5 V with a typical current consumption of 6.5 mA, it includes Fastlock mode, power-down capabilities, and a 3-wire serial interface. The component is housed in a 16-lead TSSOP package.

Feature Summary

• RF Input Frequency Range: 0.1 GHz to 3.0 GHz
• Dual-Modulus Prescaler: 32/33 configuration
• Power Supply: 2.7 V to 5.5 V; Typical Current: 6.5 mA
• Integrated Features: Digital Lock Detect, Fastlock Mode, Power-Down

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 RL7 against the manufacturer's ordering guide to confirm packaging type and reel specifications. Ensure the Y-grade temperature rating (-40°C to +125°C) matches the application requirements, as the B-grade variant covers -40°C to +85°C. Confirm RoHS compliance status through official documentation prior to procurement.

Selection Notes

Select the ADF4118 when the required RF output frequency exceeds 1.2 GHz, distinguishing it from the ADF4117. Ensure the external VCO tuning voltage does not exceed the VP pin limit of 6.0 V. Verify that the reference input frequency falls within the 5 MHz to 100 MHz range and that the loop filter design accommodates the available charge pump currents (250 µA or 1 mA).

Part Context

This component belongs to the ADF411x family of integer-N frequency synthesizers, which also includes the ADF4116 (up to 550 MHz) and ADF4117 (up to 1.2 GHz). The ADF4118 specifically extends the operational range to 3.0 GHz using a 32/33 dual-modulus prescaler. All variants share identical pinouts, control interfaces, and internal architecture, differing primarily in RF performance limits.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. For direct functional replacements within the same family, consider the ADF4117 for frequencies up to 1.2 GHz or the ADF4116 for frequencies up to 550 MHz, noting the reduction in maximum RF input capability.