Analog Devices Inc. ADF4107BCPZ-REEL7

Overview

ADF4107BCPZ-REEL7 from Analog Devices is a 7 GHz fractional-N PLL frequency synthesizer IC used as a local oscillator in RF up/downconversion stages. It features dual-modulus prescaling (8/9, 16/17, 32/33, 64/65), programmable charge pump current (625 µA to 5 mA), and separate VP supply enabling extended tuning voltage in 3 V systems. It supports RF input frequencies from 1.0 GHz to 7.0 GHz and operates across −40°C to +85°C for satellite transceivers and wireless base stations.

For engineers reviewing the ADF4107BCPZ-REEL7 datasheet, ADF4107BCPZ-REEL7 pinout, ADF4107BCPZ-REEL7 application, or ADF4107BCPZ-REEL7 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated LFCSP-20 pin mapping, confirmed alternatives with functional divergence, and supply-chain support for high-frequency RF system integration.

Technical Context

The ADF4107BCPZ-REEL7 implements a digital phase-frequency detector (PFD) with programmable antibacklash pulse width (1.3 ns, 2.9 ns, or 6.0 ns), precision charge pump with ±5 mA max sink/source, and a 14-bit R counter enabling REFIN division from 20 MHz to 250 MHz. Its N-divider architecture combines a 13-bit B counter and 6-bit A counter with a dual-modulus prescaler (P/P+1) to realize N = BP + A over wide output ranges.

It supports three-state charge pump operation, hardware/software power-down modes drawing only 10 µA, and multiplexed MUXOUT for lock detect (digital/analog), scaled RF, or scaled reference outputs. The 24-bit serial interface uses 3-wire CMOS logic (CLK/DATA/LE) with timing-critical setup/hold requirements (t1 ≥ 10 ns, t2 ≥ 10 ns).

Key Specifications

Pinout & Package

LFCSP-20 (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad connected to AGND. Pin 1 is top-left corner (marked dot); EP must be soldered to analog ground plane for thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADF4107BCPZ-REEL7, ADF4153AACPZ-R7 trades VP flexibility for single-supply simplicity and lower quiescent current, while HMC830LP6GE offers broader RF coverage and higher integration at the cost of increased complexity and layout sensitivity.

Availability

ADF4107BCPZ-REEL7 is available at Aetrix Electronics and suitable for satellite transceivers, LMDS base stations, wireless test instrumentation, and 5G FR1 signal generators requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for ADF4107BCPZ-REEL7 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 ADF4107 belongs to Analog Devices' PLL frequency synthesizer product line, designed specifically for high-frequency wireless infrastructure where low phase noise, wide RF bandwidth, and flexible power architecture are essential.

FAQ

What is the maximum RF input frequency supported by the ADF4107BCPZ-REEL7?

The ADF4107BCPZ-REEL7 supports RF input frequencies from 1.0 GHz to 7.0 GHz, as specified in Table 1 of the Rev. D datasheet. This 7 GHz upper limit enables direct synthesis in Ka-band applications without requiring frequency doublers, reducing system complexity and phase noise degradation in satellite and point-to-point radio designs. The ADF4107BCPZ-REEL7 achieves this using a high-speed CML prescaler stage followed by CMOS A/B counters rated for ≤300 MHz input.

Does the ADF4107BCPZ-REEL7 require an external loop filter?

Yes, the ADF4107BCPZ-REEL7 requires an external passive loop filter between its CP pin and the tuning port of an external VCO. The IC contains only the PFD, charge pump, and digital counters; it does not integrate loop filter components or a VCO. Designers select resistor/capacitor values based on desired loop bandwidth, phase margin, and reference spur suppression - a standard requirement for all integer-N PLL synthesizers like the ADF4107BCPZ-REEL7.

How does the separate VP supply improve VCO tuning range in the ADF4107BCPZ-REEL7?

The separate VP supply (AVDD ≤ VP ≤ 5.5 V) allows the ADF4107BCPZ-REEL7's charge pump to deliver up to 5 V tuning voltage to the VCO even when AVDD/DVDD operate at 3.3 V. This extends usable VCO tuning range beyond what a single 3.3 V rail permits, enabling wider frequency coverage with commercially available VCOs. In contrast, ICs without VP require level-shifting or boost circuits - a key design advantage of the ADF4107BCPZ-REEL7.

Can the ADF4107BCPZ-REEL7 generate frequencies below 1 GHz?

No, the ADF4107BCPZ-REEL7 is not specified for RF input frequencies below 1.0 GHz. Its prescaler and RF front-end are optimized for 1–7 GHz operation, and the datasheet explicitly lists 1.0 GHz as the minimum RF input frequency. For sub-GHz synthesis, Analog Devices recommends alternatives such as the ADF4351 or ADF4360 family, which are characterized and guaranteed down to 35 MHz or lower. Using ADF4107BCPZ-REEL7 below 1 GHz risks degraded sensitivity and undefined performance.

What package type is used for the ADF4107BCPZ-REEL7?

The ADF4107BCPZ-REEL7 uses a 20-lead LFCSP (Lead Frame Chip Scale Package) measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed thermal pad. This package is distinct from the TSSOP variant (ADF4107BSTZ) and is optimized for RF performance, thermal dissipation, and compact layout in high-frequency PCBs. The exposed pad must be soldered to AGND for proper thermal conduction and noise immunity - a requirement explicitly stated in the ADF4107BCPZ-REEL7 datasheet Figure 4.