ADF4117BRUZ

Overview

The ADF4117BRUZ is an integer-N RF PLL frequency synthesizer from Analog Devices, designed for local oscillator generation in wireless communication systems. It supports a maximum RF input frequency of 1.2 GHz and operates with a power supply ranging from 2.7 V to 5.5 V. The device features a dual-modulus prescaler (32/33), a low-noise digital phase-frequency detector, and a precision charge pump. Key electrical specifications include a typical operating current of 4.5 mA at 5 V, a reference input frequency range of 5 MHz to 100 MHz, and a charge pump current capability of up to 1 mA. It is available in a 16-lead TSSOP package.

Feature Summary

• Supports RF input frequencies up to 1.2 GHz with a 32/33 dual-modulus prescaler.
• Operates on a single 2.7 V to 5.5 V power supply with separate VP pin for extended tuning voltage.
• Includes a fastlock mode and power-down mode for rapid locking and low-power operation.
• Features a 3-wire serial interface for register control and digital/analog lock detect outputs.

Applications

• Local oscillators for GSM, PCS, DCS, CDMA, and WCDMA base station transmitters and receivers.
• Frequency synthesis for wireless handsets supporting multiple cellular standards.
• Clock generation for wireless LAN applications.
• Signal sources for communications test equipment and CATV systems.

Procurement Notes

Verify the specific suffix (e.g., BRUZ) against the manufacturer's ordering guide to confirm the package type and temperature grade. Confirm RoHS compliance status through official documentation. Check for any regional distribution restrictions or limited availability notices prior to procurement.

Selection Notes

Select the ADF4117BRUZ when an RF input frequency up to 1.2 GHz is required. Ensure the application utilizes an external loop filter and VCO to complete the phase-locked loop. Verify that the reference input frequency falls within the 5 MHz to 100 MHz range and that the charge pump current settings meet the loop filter design requirements.

Part Context

The ADF4117BRUZ belongs to the ADF411x family, which includes the ADF4116 (550 MHz) and ADF4118 (3.0 GHz). These devices share a common architecture and register map but differ in their maximum RF input frequencies and prescaler configurations. The B version denotes an industrial temperature range of -40°C to +85°C.

Replacement Considerations

The ADF4116BRUZ and ADF4118BRUZ are direct functional replacements within the same family, differing primarily in maximum RF frequency limits. Ensure the substitute part meets the specific RF input frequency requirement of the target application.