ADF4153YRUZ-RL7

Overview

The ADF4153YRUZ-RL7 is a fractional-N frequency synthesizer manufactured by Analog Devices Inc., designed for local oscillator implementation 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 from 0.5 GHz to 4.0 GHz and operates on a 2.7 V to 3.3 V power supply. Key specifications include a maximum Phase Frequency Detector (PFD) frequency of 32 MHz, a normalized phase noise floor of −220 dBc/Hz, and a typical operating current of 20 mA. The Y-version variant ensures reliable performance across an extended temperature range of −40°C to +125°C.

Feature Summary

• Fractional-N architecture with Σ-Δ based interpolator for programmable modulus (2 to 4095).
• Extended industrial temperature rating (−40°C to +125°C) specific to the Y-version suffix.
• Programmable charge pump currents ranging from 312.5 µA to 5 mA via external RSET resistor.
• Dual lock detect outputs: analog and digital, accessible via MUXOUT pin.

Applications

• Base stations for mobile radio systems including GSM, PCS, DCS, CDMA, and W-CDMA.
• Wireless handsets supporting GSM, PCS, DCS, CDMA, and W-CDMA standards.
• CATV equipment requiring stable local oscillators.
• Communications test equipment.

Procurement Notes

Verify that the 'Y' suffix corresponds to the extended temperature grade (−40°C to +125°C), as the standard 'B' version is rated for −40°C to +85°C. Confirm package type availability, as the datasheet indicates TSSOP-16 and LFCSP options. Ensure the VP pin voltage does not exceed 5.5 V absolute maximum ratings during system design.

Selection Notes

Select this component when an extended operating temperature up to +125°C is required for RF synthesizer applications. The device requires an external Voltage Controlled Oscillator (VCO) and loop filter to complete the PLL. Designers must account for the separate VP supply pin, which allows tuning voltages up to 5.5 V independent of the 3.3 V logic supply.

Part Context

The ADF4153YRUZ-RL7 belongs to the ADF4153 family of fractional-N synthesizers. It is pin-compatible with the ADF4110, ADF4111, ADF4112, ADF4113, and ADF4106 series, facilitating direct upgrades or replacements in existing designs. The RL7 suffix denotes reel packaging for automated surface-mount assembly.

Replacement Considerations

The ADF4153BRUZ-RL7 serves as a functional substitute within the same family but is limited to an industrial temperature range of −40°C to +85°C. Verify thermal requirements before substituting the B-version for the Y-version.