ADF4113BCPZ-RL7

Overview

The ADF4113BCPZ-RL7 is an Integer-N RF PLL frequency synthesizer from Analog Devices, designed for operation up to 4.0 GHz. It integrates a low-noise digital phase-frequency detector, precision charge pump, programmable reference divider, and dual-modulus prescaler (8/9, 16/17, 32/33, 64/65). The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, with a typical operating current of 8.5 mA at 5 V. It features a separate charge pump supply pin (VP) to extend tuning voltage capabilities in 3 V systems. The component is housed in a 20-lead LFCSP package and supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Maximum RF input frequency of 4.0 GHz with programmable dual-modulus prescaler options.
• Integrated low-noise digital PFD and precision charge pump with programmable currents.
• Supports 3-wire serial interface for register control and hardware/software power-down modes.
• Includes analog and digital lock detect functions with MUXOUT capability.

Applications

• Local oscillators for wireless base stations (GSM, PCS, DCS, CDMA, WCDMA)
• Frequency synthesis for wireless handsets
• Wireless LAN applications
• Communications test equipment
• CATV equipment

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to reel packaging when sourcing. Confirm that the B version designation ensures compliance with the specified industrial temperature range of -40°C to +85°C. Ensure the LFCSP-20 package footprint matches the PCB design guidelines provided in the datasheet, particularly regarding the exposed paddle connection to AGND.

Selection Notes

Select this model when an RF input frequency up to 4.0 GHz is required. The separate VP pin allows for extended tuning voltages, which is beneficial if the system uses a 3 V supply but requires higher VCO control voltages. Consider the 8.5 mA typical current consumption against system power budgets. Verify that the external loop filter and VCO are compatible with the programmable charge pump current settings available via the RSET resistor.

Part Context

This component belongs to the ADF4110 family of frequency synthesizers, which includes the ADF4110 (550 MHz), ADF4111 (1.2 GHz), and ADF4112 (3.0 GHz). The ADF4113 variant specifically extends the operational frequency range to 4.0 GHz while maintaining similar architectural features such as the dual-modulus prescaler and serial interface found across the series.

Replacement Considerations

ADF4113BRUZ is a pin-compatible alternative in a TSSOP-16 package. ADF4106 is noted as an updated version within the product line. When replacing, verify that the package type change does not impact thermal performance or PCB layout constraints.