ADF4117BRU

Overview

The ADF4117BRU is an integer-N RF PLL frequency synthesizer from Analog Devices, designed for local oscillator implementation in wireless transceivers. It features a dual-modulus prescaler with a 32/33 modulus and supports RF input frequencies up to 1.2 GHz. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, with a typical operating current of 4.5 mA. It includes a low-noise digital phase frequency detector, a precision charge pump, and programmable counters (A, B, and R) controlled via a 3-wire serial interface. The component is housed 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 power supply between 2.7 V and 5.5 V with a typical current consumption of 4.5 mA.
• Includes a precision charge pump with selectable high (1 mA) and low (250 µA) current settings.
• Features a 3-wire serial interface for register control and digital lock detect functionality.

Applications

• Local oscillators for GSM, PCS, DCS, CDMA, and WCDMA base stations
• Local oscillators for wireless handsets
• Wireless LAN systems
• Communications test equipment

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm temperature range and packaging details. The 'B' designation indicates an industrial temperature range of -40°C to +85°C. Confirm pinout compatibility with the 16-lead TSSOP outline dimensions before integration into the PCB layout.

Selection Notes

Select this model when an RF input frequency up to 1.2 GHz is required. Ensure the external VCO tuning voltage requirements are met by the separate VP supply pin, which can be set up to 6.0 V. Verify that the reference input frequency falls within the 5 MHz to 100 MHz range for optimal performance.

Part Context

This component belongs to the ADF411x family, which also includes the ADF4116 (550 MHz) and ADF4118 (3.0 GHz). All members share identical architectures and pinouts but differ in their maximum RF input frequency specifications due to internal prescaler configurations.

Replacement Considerations

The ADF4116BRU and ADF4118BRU are direct pin-compatible alternatives within the same series. Selection depends on whether the application requires a lower maximum frequency (ADF4116) or a higher one (ADF4118).