ADF4153BRUZ

Overview

The ADF4153BRUZ 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 programmable reference divider. The device supports RF input frequencies up to 4 GHz and operates on a single 2.7 V to 3.3 V supply. Key features include a Σ-Δ based fractional interpolator, programmable charge pump currents, and a 3-wire serial interface. It is housed in a 16-lead TSSOP package and offers analog and digital lock detect capabilities.

Feature Summary

• Fractional-N synthesis with RF bandwidth up to 4 GHz
• Single 2.7 V to 3.3 V power supply operation
• Programmable charge pump currents via RSET resistor
• 3-wire serial interface for register control

Applications

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

Procurement Notes

Verify the specific suffix 'BRUZ' corresponds to the industrial temperature range (-40°C to +85°C) and TSSOP-16 package. Confirm that the Y-version variant is required if extended temperature operation (-40°C to +125°C) is necessary, as it carries a different suffix. Ensure compatibility with external loop filter designs using ADIsimPLL software.

Selection Notes

Select the ADF4153BRUZ for designs requiring RF inputs up to 4 GHz with a 3.3 V supply. Consider the Y-version for automotive or high-temperature environments. The device requires an external VCO and passive loop filter components to complete the PLL. Check pin compatibility with ADF4110/ADF4111/ADF4112/ADF4113 if migrating from older designs.

Part Context

The ADF4153 belongs to the ADF41xx series of fractional-N synthesizers. It is pin-compatible with the ADF4110, ADF4111, ADF4112, ADF4113, and ADF4106, facilitating direct replacements in existing layouts. The BRUZ suffix denotes the standard industrial grade in a TSSOP-16 package, distinct from the LFCSP options available for other variants.

Replacement Considerations

The ADF4153 is pin-compatible with the ADF4110, ADF4111, ADF4112, ADF4113, and ADF4106. Verify that the replacement part matches the required temperature range and package type (TSSOP-16 vs. LFCSP).

FAQ

What is the maximum RF input frequency?

The maximum RF input frequency is 4 GHz.

How is the charge pump current set?

The charge pump current is set by connecting a resistor between the RSET pin and ground, with a typical maximum of 5 mA at 5.1 kΩ.

Does the device support fractional-N division?

Yes, it uses a Σ-Δ based fractional interpolator to allow programmable fractional-N division defined by INT, FRAC, and MOD registers.