ADF4153ABRUZ-RL7

Overview

The ADF4153ABRUZ-RL7 is a fractional-N frequency synthesizer from Analog Devices, designed for local oscillator applications in wireless transceivers. It integrates a low-noise digital phase-frequency detector, precision charge pump, and sigma-delta fractional interpolator. The device supports RF input frequencies from 500 MHz to 4 GHz with a 2.7 V to 3.3 V supply. Key electrical parameters include a programmable charge pump current ranging from 312.5 µA to 5 mA, a normalized phase noise floor of -223 dBc/Hz, and a 3-wire serial interface for register control.

Feature Summary

• Fractional-N synthesis with sigma-delta interpolation for programmable channel spacing
• RF input range of 500 MHz to 4 GHz with dual-modulus prescaler options (4/5 or 8/9)
• Programmable charge pump current (312.5 µA to 5 mA) via external RSET resistor
• Integrated analog and digital lock detect with configurable MUXOUT

Applications

• CATV equipment
• Base stations for mobile radio (GSM, PCS, DCS, WiMAX, CDMA, W-CDMA)
• Wireless handsets and LANs
• Communications test equipment

Procurement Notes

Verify the specific suffix RL7 corresponds to the Reel packaging format as indicated by distributor listings. Confirm RoHS compliance status through official Analog Devices documentation prior to integration. Ensure the TSSOP-16 package thermal characteristics are accounted for in the PCB design, particularly regarding the exposed pad connection to ground.

Selection Notes

Select this component when an RF input frequency up to 4 GHz is required with fractional-N flexibility. Choose the ADF4153A over the ADF4153B if the application operates within the commercial temperature range (-40°C to +85°C) rather than the extended industrial range. Ensure the loop filter design accommodates the programmable charge pump currents and that the reference input sensitivity matches the available clock source.

Part Context

The ADF4153A is part of the ADF4153 family, pin-compatible with the ADF4106, ADF4110, ADF4111, ADF4112, and ADF4113 series. The 'A' suffix typically denotes the commercial temperature grade (-40°C to +85°C), distinguishing it from the 'B' variant which supports extended temperatures up to +125°C. The BRUZ indicates the TSSOP-16 package type.

Replacement Considerations

Pin-compatible replacements include ADF4106, ADF4110, ADF4111, ADF4112, and ADF4113. For extended temperature operation, consider the ADF4153BRUZ-RL7. Verify that the substitute part meets the specific RF input frequency and phase noise requirements of the design.