Analog Devices Inc. ADF4360-9BCPZRL

Overview

ADF4360-9BCPZRL from Analog Devices is an integrated integer-N PLL frequency synthesizer with on-chip VCO, designed for precise clock generation in RF and mixed-signal systems. It delivers a primary output range of 65 MHz to 400 MHz, supports 3-wire serial programming, features digital lock detect, and operates from a single 3.3 V supply. It is used in wireless LAN infrastructure and CATV equipment where stable, programmable local oscillator signals are required.

For engineers reviewing the ADF4360-9BCPZRL datasheet, ADF4360-9BCPZRL pinout, ADF4360-9BCPZRL application, or ADF4360-9BCPZRL equivalent, this page provides verified technical context, validated pin functions, confirmed VCO tuning behavior, real-world jitter performance (1.4 ps RMS), and accurate alternative part comparisons - all grounded in Rev. D datasheet specifications and EV-ADF4360-9EB1Z evaluation board test data.

Technical Context

The ADF4360-9BCPZRL implements an integer-N PLL architecture with a 13-bit B counter (N divider) and 14-bit R counter, enabling VCO frequency synthesis via f_VCO = B × f_REFIN/R. Its VCO core uses eight overlapping frequency bands selected automatically during power-up or N latch update, with VTUNE range of 1.25 V to 2.5 V and typical KV of 2 MHz/V (L1/L2 = 270 nH).

It integrates a charge pump with programmable I_CP (2.5 mA typ at RSET = 4.7 kΩ), a 24-bit shift register with 3-wire interface (CLK/DATA/LE), and dual output paths: RFOUTA/RFOUTB (VCO or divided-by-2) and DIVOUT (programmable divide-by-A or A/2, A = 2–31). Lock detection is digital, with configurable precision (3 or 5 consecutive <15 ns phase error cycles).

Key Specifications

Pinout & Package

ADF4360-9BCPZRL is housed in a 24-lead LFCSP (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad requiring connection to AGND. Pin 1 identifier is marked; EP must be soldered to analog ground for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PLL synthesizer applications.

Compared with ADF4360-9BCPZRL, ADF4351BRUZ offers broader frequency coverage and fractional-N flexibility at higher power and complexity, while LMX2594RHBT delivers superior phase noise and wider range but omits the dedicated DIVOUT auxiliary divider - making ADF4360-9BCPZRL optimal for cost-sensitive, fixed-band 65–400 MHz clock generation with dual-output capability.

Availability

ADF4360-9BCPZRL is available at Aetrix Electronics and suitable for wireless LAN infrastructure, CATV equipment, and test instrumentation requiring stable component supply, consistent parametric performance across temperature (−40°C to +85°C), and long-term production continuity.

Supply support for ADF4360-9BCPZRL 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 ADF4360-9BCPZRL belongs to the ADF4360 family of integrated PLL synthesizers designed specifically for cost-effective, low-power RF clock generation in broadband communication systems - emphasizing simplicity, small footprint, and proven performance in field-deployed infrastructure.

FAQ

What is the maximum VCO output frequency supported by the ADF4360-9BCPZRL?

The ADF4360-9BCPZRL supports a maximum VCO output frequency of 400 MHz, as specified in the Rev. D datasheet under "Maximum VCO Output Frequency" with ICORE = 5 mA and appropriate external inductors (L1/L2). This limit is determined by the VCO core design and remains valid across the full operating temperature range (−40°C to +85°C). The ADF4360-9BCPZRL achieves this using eight auto-selected frequency bands and requires external inductor selection per the "Choosing the Correct Inductance Value" section.

Does the ADF4360-9BCPZRL support fractional-N synthesis?

No, the ADF4360-9BCPZRL implements an integer-N PLL architecture only, as explicitly stated in the "GENERAL DESCRIPTION" and "FEATURES" sections of the Rev. D datasheet. It uses a 13-bit B counter (N divider) and 14-bit R counter with no fractional modulus or sigma-delta modulator. Frequency resolution is therefore limited to f_REFIN/R steps. For fractional-N capability, designers should consider alternatives such as the ADF4351BRUZ or LMX2594RHBT, which are not pin- or functionally compatible with the ADF4360-9BCPZRL.

How is the output power level programmed on the ADF4360-9BCPZRL?

The ADF4360-9BCPZRL output power on RFOUTA/RFOUTB is programmed via PL1 and PL2 bits in the Control Latch, selecting one of four tail current levels: 3.5 mA (−9 dBm), 5 mA (−6 dBm), 7.5 mA (−3 dBm), or 11 mA (0 dBm), as detailed in the "OUTPUT STAGE" section (Page 12). These settings assume proper external matching (shunt inductor to VVCO and AC coupling into 50 Ω). The ADF4360-9BCPZRL does not support continuous power adjustment - only discrete 3 dB steps.

What is the purpose of the DIVOUT pin on the ADF4360-9BCPZRL?

The DIVOUT pin on the ADF4360-9BCPZRL provides access to internally divided signals including VCO ÷ A or VCO ÷ 2A (where A = 2–31), as well as scaled reference or N-counter outputs. Its duty cycle is 100%/A for VCO ÷ A mode or 50% for VCO ÷ 2A mode. This enables generation of lower-frequency clocks (e.g., 52 MHz, 95 MHz, 180 MHz) with 1.4 ps RMS jitter, eliminating the need for external dividers in applications like ADC encode clocks or baseband timing. Configuration is controlled by D3–D1 bits in the Control Latch.

Can the ADF4360-9BCPZRL operate from a 1.8 V supply?

No, the ADF4360-9BCPZRL requires AVDD, DVDD, and VVCO supplies between 3.0 V and 3.6 V, as specified in the "POWER SUPPLIES" table (Page 3) and Absolute Maximum Ratings (Page 6). While its digital inputs are 1.8 V logic-compatible (VINH ≥ 1.5 V, VINL ≤ 0.6 V), the core analog circuitry-including VCO, charge pump, and RF output stage-depends on the 3.0–3.6 V rail. Operating below 3.0 V risks failure to lock, degraded phase noise, or undefined behavior per Rev. D datasheet constraints.