ADF4216BRUZ-RL

Overview

The ADF4216BRUZ-RL is a dual RF PLL frequency synthesizer from Analog Devices, part of the ADF4216/ADF4217/ADF4218 family. It integrates two independent phase-locked loops for local oscillator generation in wireless transceivers. The device features selectable dual-modulus prescalers (RF: 32/33 or 64/65; IF: 8/9 or 16/17) and programmable counters. It operates on a 2.7 V to 5.5 V supply with typical current consumption of 18 mA at 3 V. Key electrical parameters include a maximum RF input frequency of 1.2 GHz for the ADF4216 variant, an IF input range up to 550 MHz, and a charge pump with selectable high (4.5 mA) and low (1.125 mA) currents. It utilizes a 3-wire serial interface and is housed in a 20-lead TSSOP package.

Feature Summary

• Dual independent PLLs supporting RF and IF sections with selectable prescaler ratios (RF: 32/33, 64/65; IF: 8/9, 16/17).
• Integrated 22-bit shift register with 3-wire serial interface for control of R, A, and B counters.
• Selectable charge pump currents (High: 4.5 mA typ, Low: 1.125 mA typ) with three-state leakage current of 1 nA typ.
• Power-down mode reducing current consumption to 5 µA max, with synchronous/asynchronous control options.

Applications

• Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
• Base stations for wireless radio systems
• Wireless LANs
• Communications test equipment
• CATV equipment

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging as per distributor listings. Confirm the base model corresponds to the ADF4216 specifications (1.2 GHz RF limit) rather than the ADF4217 or ADF4218 variants. Check for obsolete status notifications from the manufacturer, as this component family may be discontinued.

Selection Notes

Select the ADF4216 variant specifically if the RF application requires a maximum input frequency of 1.2 GHz. Ensure the external VCO and loop filter are compatible with the available charge pump currents (1.125 mA or 4.5 mA). Verify that the required reference frequency falls within the 5 MHz to 40 MHz range for optimal phase detector performance.

Part Context

This component belongs to the ADF4216/ADF4217/ADF4218 series of dual frequency synthesizers. The 'B' designation indicates the industrial temperature range (-40°C to +85°C). The 'RU' package code refers to the Thin Shrink Small Outline Package (TSSOP-20). The '-RL' suffix typically denotes tape and reel packaging for automated assembly.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Consider evaluating newer generations of dual PLL synthesizers from Analog Devices or other vendors if obsolescence is a concern, ensuring pin compatibility and electrical parameter matching.