ADF4153ABRUZ

Overview

The ADF4153ABRUZ is a fractional-N frequency synthesizer from Analog Devices, designed for local oscillator implementation in wireless transceivers. It operates with a power supply of 2.7 V to 3.3 V and supports RF input frequencies from 500 MHz to 4 GHz. The device features a low-noise digital phase frequency detector, a precision charge pump with programmable current, and a sigma-delta based fractional interpolator. It utilizes a 3-wire serial interface for register control and includes analog and digital lock detect functions. The component is housed in a 16-lead TSSOP package.

Feature Summary

• Fractional-N synthesis with sigma-delta interpolator for programmable division
• RF bandwidth up to 4 GHz with dual-modulus prescaler (4/5 or 8/9)
• Programmable charge pump current ranging from 312.5 µA to 5 mA
• Separate VP pin allows extended tuning voltage up to 5.5 V

Applications

• CATV equipment
• Mobile radio base stations (GSM, PCS, DCS, CDMA, W-CDMA)
• Wireless LANs and PMR communications
• Communications test equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. The BRUZ suffix indicates a TSSOP-16 package. Confirm availability status through authorized distributors as supply conditions may vary. Ensure all electrical parameters match the system requirements before finalizing procurement.

Selection Notes

Select this component when a fractional-N synthesizer with an RF input up to 4 GHz is required. The separate VP supply pin enables compatibility with VCOs requiring higher tuning voltages than the logic supply. Ensure the external loop filter design accounts for the programmable charge pump currents and the desired loop bandwidth to optimize phase noise and spur performance.

Part Context

The ADF4153ABRUZ belongs to the ADF4153A family of fractional-N frequency synthesizers. It is pin-compatible with the ADF4106, ADF4110, ADF4111, ADF4112, and ADF4113 devices, facilitating direct upgrades or replacements in existing designs. The device integrates a third-order fractional interpolator to minimize spurious outputs while maintaining low phase noise characteristics.

Replacement Considerations

The ADF4153ABRUZ is pin-compatible with the ADF4110, ADF4111, ADF4112, ADF4113, and ADF4106. Verify that the substitute part number matches the required package and temperature range specifications.