ADF4110BRUZ

Overview

The ADF4110BRUZ is a single-channel, integer-N phase-locked loop (PLL) frequency synthesizer from Analog Devices. It operates with an RF input frequency range of 50 MHz to 550 MHz and supports power supplies between 2.7 V and 5.5 V. The device integrates a low-noise digital phase-frequency detector, a precision charge pump, programmable reference and feedback counters, and a dual-modulus prescaler. It draws a typical supply current of 4.5 mA at 5 V and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated Integer-N PLL architecture with a 6-bit A counter, 13-bit B counter, and 14-bit R counter for flexible frequency synthesis.
• Programmable dual-modulus prescaler supporting ratios of 8/9, 16/17, 32/33, or 64/65.
• Precision charge pump with programmable output currents set via an external resistor on the RSET pin.
• Controlled via a simple 3-wire serial interface with hardware and software power-down modes.

Applications

• Local oscillators for wireless base station transmitters and receivers.
• Frequency synthesis in wireless handsets and mobile communication devices.
• Signal generation for communications test equipment.
• Component modules for CATV systems and wireless LANs.

Procurement Notes

Verify that the specific order contains the BRUZ suffix to confirm the TSSOP-16 package variant. Confirm the B version designation ensures compliance with the specified -40°C to +85°C operating temperature range. Cross-reference the manufacturer part number against official distributor catalogs to ensure authenticity before procurement.

Selection Notes

Select the ADF4110BRUZ when the application requires a maximum RF input frequency of 550 MHz. Ensure the design accommodates the separate VP pin for charge pump supply if extended tuning voltage is needed. Verify that the required division ratios are compatible with the available prescaler settings and counter bit widths.

Part Context

This component belongs to the ADF4110 family of RF PLL frequency synthesizers. It shares architectural similarities with the ADF4111, ADF4112, and ADF4113 models, which offer higher maximum RF input frequencies of 1.2 GHz, 3.0 GHz, and 4.0 GHz, respectively. All variants utilize identical control logic and pin configurations.

Replacement Considerations

The ADF4113BRUZ serves as a functional substitute for applications requiring higher frequency operation up to 4.0 GHz. Designers must verify that the increased RF input capability does not conflict with existing circuit constraints and that the slightly higher current consumption is supported by the power supply design.