Analog Devices Inc. ADF4107BRU-REEL7

Overview

ADF4107BRU-REEL7 from Analog Devices is a 7 GHz integer-N PLL frequency synthesizer IC used as a local oscillator in RF up/downconversion stages. It features dual-modulus prescaling (8/9 to 64/65), programmable charge pump current (625 µA–5 mA), 2.7–3.3 V supply, separate VP rail up to 5.5 V, and 3-wire serial interface. It enables high-frequency wireless transceivers requiring low phase noise and wide tuning range.

For engineers reviewing the ADF4107BRU-REEL7 datasheet, ADF4107BRU-REEL7 pinout, ADF4107BRU-REEL7 application, or ADF4107BRU-REEL7 equivalent, key selection criteria include RF input bandwidth (1–7 GHz), PFD frequency limit (104 MHz max), lock detect options (analog/digital), charge pump compliance voltage range (0.5 V to VP − 0.5 V), and TSSOP-16 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The ADF4107BRU-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 ±ICP output referenced to CPGND, and a 19-bit N-divider formed by cascaded 13-bit B and 6-bit A counters plus dual-modulus prescaler (P/P+1). Its architecture supports N = BP + A division with R-divider programmability from 1 to 16,383.

It operates with two independent power domains: AVDD/DVDD (2.7–3.3 V) for logic and analog core, and VP (≥AVDD, ≤5.5 V) for extended charge pump tuning voltage swing. The RF input stage accepts differential ac-coupled signals at RFINA/RFINB (±600 mV common-mode tolerance), while REFIN accepts CMOS/TTL-compatible square waves from 20–250 MHz.

Key Specifications

Pinout & Package

TSSOP-16 package (RU suffix), 5 mm × 4.4 mm, 0.65 mm pitch, exposed pad connected to AGND per datasheet Figure 3 and Table 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADF4107BRU-REEL7, ADF4153A offers simplified power architecture but sacrifices VP-driven VCO headroom, while HMC703LP4E delivers superior spectral purity and resolution at the cost of increased design complexity and loss of charge pump programmability.

Availability

ADF4107BRU-REEL7 is available at Aetrix Electronics and suitable for wireless base stations, satellite communication terminals, RF instrumentation, and 5G test equipment requiring stable component supply across extended temperature and long production lifecycles.

Supply support for ADF4107BRU-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, Inc. is a global leader in high-performance analog, mixed-signal, and RF ICs, headquartered in Wilmington, MA, with design centers worldwide and ISO 9001-certified manufacturing.

The ADF4107 belongs to Analog Devices' PLL frequency synthesizer product line, engineered specifically for high-frequency wireless infrastructure and test instrumentation demanding wide bandwidth, low phase noise, and robust programmability.

FAQ

What is the maximum RF input frequency supported by the ADF4107BRU-REEL7?

The ADF4107BRU-REEL7 supports RF input frequencies from 1.0 GHz to 7.0 GHz, as specified in the Rev. D datasheet Table 1. This 7 GHz bandwidth enables direct synthesis in Ka-band applications without requiring external frequency multipliers, simplifying RF front-end architecture and reducing component count in high-frequency wireless systems using the ADF4107BRU-REEL7.

Does the ADF4107BRU-REEL7 require an external loop filter?

Yes, the ADF4107BRU-REEL7 requires an external passive loop filter between the CP pin and the VCO tuning input. The charge pump outputs ±ICP current into this filter, which integrates the error signal to generate the VCO control voltage. Filter design depends on selected ICP (via RSET), desired loop bandwidth, and phase margin - no internal filtering is provided in the ADF4107BRU-REEL7.

Can the ADF4107BRU-REEL7 operate with a 5 V VCO tuning voltage?

Yes, the ADF4107BRU-REEL7 supports VP up to 5.5 V, allowing direct interfacing with VCOs requiring up to 5 V tuning range. With AVDD = 3.3 V and VP = 5 V, the charge pump maintains full ±ICP compliance over 0.5 V to VP − 0.5 V (i.e., 0.5–4.5 V), ensuring linear control and minimizing distortion in the ADF4107BRU-REEL7-based PLL.

How is lock detection implemented in the ADF4107BRU-REEL7?

The ADF4107BRU-REEL7 provides both analog and digital lock detect outputs via the MUXOUT pin. Digital lock detect asserts high after three (LDP = 0) or five (LDP = 1) consecutive PFD cycles with phase error <15 ns. Analog lock detect outputs narrow low-going pulses on lock - both modes are user-selectable and require no external components for basic use in the ADF4107BRU-REEL7.

What package type does the ADF4107BRU-REEL7 use?

The ADF4107BRU-REEL7 uses a 16-lead TSSOP package (RU suffix), 5 mm × 4.4 mm body size with 0.65 mm lead pitch and exposed thermal pad. This RoHS-compliant package is optimized for automated assembly and thermal performance in high-density RF PCB layouts, and is explicitly documented in the ADF4107BRU-REEL7 datasheet Figure 3 and Ordering Guide.