Analog Devices Inc. ADF4360-5BCP

Overview

ADF4360-5BCP from Analog Devices is an integrated integer-N PLL frequency synthesizer with on-chip VCO, designed for 1300 MHz center frequency operation in RF local oscillator (LO) generation. It delivers RF output from 1200 MHz to 1400 MHz (or 600–700 MHz with ÷2 enabled), supports 3.0–3.6 V supply, features 3-wire serial interface, and provides programmable output power from −13.5 dBm to −4.5 dBm in 3 dB steps - used in GSM/PCS/WCDMA handset transceivers.

For engineers reviewing the ADF4360-5BCP datasheet, ADF4360-5BCP pinout, ADF4360-5BCP application, or ADF4360-5BCP equivalent, key selection criteria include its 1200–1400 MHz VCO range, dual-modulus prescaler (8/9, 16/17, 32/33), lock detect capability, 24-pin CSP package with exposed pad, and compatibility with 1.8 V logic levels.

Technical Context

The ADF4360-5BCP implements a fully integrated PLL architecture with a 13-bit B counter, 5-bit A counter, 14-bit R counter, and programmable dual-modulus prescaler enabling N = BP + A division. Its VCO uses eight overlapping frequency bands with automatic band selection at power-up or latch update, ensuring stable tuning across 1200–1400 MHz without excessive KV drift.

It integrates analog and digital lock detection, mute-till-lock detect (MTLD), hardware/software power-down modes, and a charge pump with RSET-controlled current (2.5 mA typical at 4.7 kΩ). The output stage supports differential RFOUTA/RFOUTB with programmable tail current (3.5–11 mA) and corresponding output power levels.

Key Specifications

Pinout & Package

ADF4360-5BCP uses a 24-lead chip-scale package (CSP) with exposed thermal pad (EP), requiring soldering of EP to AGND for thermal and electrical integrity. Pin pitch is 0.5 mm; body size is 4.0 mm × 4.0 mm × 0.8 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integer-N synthesizer with integrated VCO applications.

Compared with ADF4360-7BCPZ, the ADF4360-5BCP offers optimized phase noise and spur performance at 1300 MHz but lacks fractional-N flexibility; versus LMX2531LQ1580E, it provides superior lock detect functionality and proven handset integration but requires higher supply voltage and lacks fractional division.

Availability

ADF4360-5BCP is available at Aetrix Electronics and suitable for wireless handset design, RF test instrumentation, WLAN front-end development, and CATV equipment manufacturing requiring stable component supply and long-term production continuity.

Supply support for ADF4360-5BCP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, and industrial markets since 1965.

The ADF4360 family targets cost-sensitive, space-constrained RF systems requiring integrated PLL+VCO solutions - specifically engineered for cellular infrastructure, handset, and test equipment LO generation with minimal external components.

FAQ

What is the recommended power-up sequence for the ADF4360-5BCP?

The ADF4360-5BCP requires strict sequencing: first apply AVDD/DVDD/VVCO, then load the R counter latch, followed by the control latch, and finally the N counter latch. This ensures correct VCO band selection and avoids tuning instability. Skipping this order may cause extended lock time or failure to achieve specified 1200–1400 MHz output on the ADF4360-5BCP.

Does the ADF4360-5BCP support fractional-N synthesis?

No, the ADF4360-5BCP implements an integer-N PLL architecture only. It does not support fractional division or delta-sigma modulation. Frequency resolution is limited to fREFIN/R steps. For fractional-N capability, consider alternatives like the ADF4350 or LMX2531 series - the ADF4360-5BCP is strictly integer-N.

How is output power controlled on the ADF4360-5BCP?

Output power on the ADF4360-5BCP is set via PL1 and PL2 bits in the control latch, selecting tail current values of 3.5 mA, 5 mA, 7.5 mA, or 11 mA in the RF output stage. These correspond to output power levels of −13.5 dBm, −10.5 dBm, −7.5 dBm, and −4.5 dBm into 50 Ω. This programming is done over the 3-wire serial interface and applies to both RFOUTA and RFOUTB.

Can the ADF4360-5BCP generate frequencies below 1200 MHz?

Yes - the ADF4360-5BCP supports a divide-by-2 mode (enabled by setting DIV2 bit in the N counter latch), producing RF output from 600 MHz to 700 MHz. This mode halves the VCO frequency while preserving phase noise scaling (KV reduced to 15 MHz/V), making it suitable for lower-band applications like DECT or ISM without external dividers.

What is the function of the MUXOUT pin on the ADF4360-5BCP?

The MUXOUT pin on the ADF4360-5BCP is a programmable multiplexer output that can be configured to provide digital lock detect (active-high), analog lock detect (open-drain), N-divider output, R-divider output, or serial data output (SDOUT). Selection is controlled by M3/M2/M1 bits in the function latch, enabling flexible system monitoring and debug without additional test points.