ADF4117BRUZ-RL7

Overview

The ADF4117BRUZ-RL7 is an integer-N RF PLL frequency synthesizer from Analog Devices, designed for local oscillator generation in wireless communication systems. It features a dual-modulus prescaler with a 32/33 modulus and supports RF input frequencies up to 1.2 GHz. The device operates on a single power supply ranging from 2.7 V to 5.5 V, with a typical operating current of 4.5 mA at 3 V. It includes a precision charge pump with selectable high (1 mA) and low (250 µA) currents, a digital lock detect function, and a fastlock mode for rapid settling. The component is housed in a 16-lead TSSOP package.

Feature Summary

• RF input frequency range up to 1.2 GHz with a 32/33 dual-modulus prescaler
• Integrated phase frequency detector and programmable charge pump (250 µA or 1 mA)
• Digital lock detect output and fastlock mode for accelerated loop locking
• 3-wire serial interface controlling R, N, function, and initialization latches

Applications

• Local oscillators for GSM, PCS, DCS, CDMA, and WCDMA base stations
• Local oscillators for wireless handsets supporting GSM, PCS, DCS, CDMA, and WCDMA
• Wireless LAN applications
• Communications test equipment
• CATV equipment

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm temperature grade and packaging configuration. Confirm that the B version meets the required industrial temperature range of -40°C to +85°C. Ensure compatibility with the system's voltage levels for the 3-wire serial interface and reference input.

Selection Notes

Select this component when an RF input frequency up to 1.2 GHz is required. The 32/33 prescaler allows for higher division ratios compared to lower-frequency variants. Consider the Y grade if operation beyond +85°C up to +125°C is necessary. Verify that the external VCO tuning voltage requirements are met by the VP pin capability relative to the AVDD supply.

Part Context

This part belongs to the ADF411x family, which also includes the ADF4116 (550 MHz) and ADF4118 (3.0 GHz). All members share similar architectures, including the 3-wire interface and charge pump structure, but differ primarily in their maximum RF input frequency capabilities and prescaler moduli settings.

Replacement Considerations

The ADF4116BRUZ-RL7 and ADF4118BRUZ-RL7 are direct pin-compatible alternatives within the same family. Selection depends on whether the application requires a lower maximum frequency (ADF4116) or a higher one (ADF4118). The ADF4113HVBRUZ-RL7 offers a high-voltage charge pump option but has different frequency specifications.