ADF4117BRU-REEL7

Overview

The ADF4117BRU-REEL7 is an RF PLL frequency synthesizer from Analog Devices, designed for local oscillator implementation in wireless communication systems. It features a dual-modulus prescaler with a 32/33 configuration and supports RF input frequencies up to 1.2 GHz. The device operates on a single power supply ranging from 2.7 V to 5.5 V, with a separate VP pin allowing extended tuning voltage up to 6.0 V. Key electrical specifications include a typical supply current of 4.5 mA, a phase detector frequency of 55 MHz, and a charge pump current of 1 mA. It utilizes a 3-wire serial interface for register control.

Feature Summary

• Integrated Integer-N PLL with 32/33 dual-modulus prescaler supporting frequencies up to 1.2 GHz
• Low power consumption with 4.5 mA typical supply current and 1 μA low-power sleep mode
• Fastlock mode capability for rapid PLL locking via external resistor switching
• Digital lock detect output and multiplexer output (MUXOUT) for internal signal monitoring

Applications

• Local oscillators for GSM, PCS, DCS, CDMA, and WCDMA base stations
• Frequency synthesis in wireless handsets and mobile devices
• Signal generation for Wireless LANs and communications test equipment
• Frequency synthesis for CATV equipment

Procurement Notes

Verify the specific suffix 'Y' for the -40°C to +125°C industrial temperature range when ordering. Confirm that the REEL7 packaging designation matches the required tape and reel quantity for automated assembly processes. Ensure compatibility with the TSSOP-16 package outline dimensions during PCB layout.

Selection Notes

Select this component for applications requiring a 1.2 GHz maximum RF input frequency. The Y-grade version is necessary for environments exceeding 85°C. Designers must provide an external loop filter and VCO to complete the phase-locked loop. Ensure the VP supply voltage does not exceed 6.0 V to maintain device reliability.

Part Context

This part belongs to the ADF411x family, which includes the ADF4116 (550 MHz) and ADF4118 (3.0 GHz). The ADF4117 specifically bridges the gap between these models by offering a 1.2 GHz limit. All variants share the same functional architecture, including the 3-wire interface and charge pump characteristics, differing primarily in the prescaler modulus and RF input stage capabilities.

Replacement Considerations

The ADF4116BRU-REEL7 serves as a lower-frequency alternative with a 550 MHz limit. The ADF4118BRU-REEL7 provides higher performance up to 3.0 GHz. Both share the same TSSOP-16 package and pinout, facilitating potential board-level substitutions if frequency requirements allow.