Analog Devices Inc. ADF4107BRUZ-REEL

Overview

ADF4107BRUZ-REEL from Analog Devices is a 7.0 GHz bandwidth integer-N PLL frequency synthesizer designed for local oscillator generation in wireless transceivers. It integrates a low-noise phase frequency detector, precision charge pump, dual-modulus prescaler (8/9, 16/17, 32/33, 64/65), programmable A/B counters (6-bit/13-bit), and 14-bit reference divider. Operates from 2.7 V to 3.3 V with separate VP supply up to 5.5 V, enabling extended VCO tuning voltage in 3 V systems - used in LMDS base station transmitters and broadband wireless access equipment.

For engineers reviewing the ADF4107BRUZ-REEL datasheet, ADF4107BRUZ-REEL pinout, ADF4107BRUZ-REEL application, or ADF4107BRUZ-REEL equivalent, key selection criteria include RF input frequency range (1–7 GHz), PFD frequency capability (up to 104 MHz), charge pump current programmability (625 µA to 5 mA), lock detect options (analog/digital), and TSSOP-16 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The ADF4107BRUZ-REEL implements an N-divider architecture where N = BP + A, using a dual-modulus prescaler (P/P+1) and cascaded 13-bit B and 6-bit A counters. Its phase frequency detector features programmable antibacklash pulse width (1.3 ns, 2.9 ns, or 6.0 ns) to eliminate dead-zone-induced phase noise and reference spurs.

It supports three-state charge pump output, hardware/software power-down modes, and a 24-bit serial interface with LE/CLK/DATA control. MUXOUT provides selectable access to lock detect, scaled RF, or scaled reference signals - critical for real-time PLL diagnostics and system-level synchronization in instrumentation and satellite up/downconverters.

Key Specifications

Pinout & Package

TSSOP-16 package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed pad connected to AGND per Figure 3 and Table 4. Pin functions validated per Analog Devices Rev. D datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADF4107BRUZ-REEL, ADF4153A offers higher PFD speed but sacrifices VP-based tuning extension, while LMX2531 trades RF input bandwidth and temperature rating for fractional-N flexibility and integration - selection depends on whether raw RF frequency coverage, VCO headroom, or frequency resolution dominates the design priority.

Availability

ADF4107BRUZ-REEL is available at Aetrix Electronics and suitable for broadband wireless access infrastructure, satellite communication uplinks, and test instrumentation requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for ADF4107BRUZ-REEL 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 digital signal processing semiconductors, headquartered in Norwood, MA.

The ADF4107BRUZ-REEL belongs to Analog Devices' ADF4xxx PLL synthesizer product line, engineered specifically for high-frequency wireless infrastructure LO generation with emphasis on phase noise, RF bandwidth, and industrial reliability.

FAQ

What is the maximum RF input frequency supported by the ADF4107BRUZ-REEL?

The ADF4107BRUZ-REEL 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 bandwidth enables direct synthesis in Ka-band applications without requiring external frequency multipliers, simplifying RF front-end architecture and reducing system cost and insertion loss.

Does the ADF4107BRUZ-REEL require an external loop filter?

Yes, the ADF4107BRUZ-REEL requires an external passive loop filter between the CP pin and the VCO tuning port. The charge pump outputs ±ICP current into this filter, which integrates the error signal to generate the VCO control voltage. Filter design must account for selected ICP value, PFD frequency, and desired loop bandwidth - no on-chip filtering is provided.

How does the separate VP supply improve VCO tuning range in the ADF4107BRUZ-REEL?

The ADF4107BRUZ-REEL's VP pin accepts 3.3 V to 5.5 V, independent of AVDD/DVDD (2.7–3.3 V). This allows the charge pump to drive the VCO tuning line up to 5 V even when the core operates at 3 V - directly extending usable varactor voltage range and enabling wider VCO frequency coverage without level-shifting circuitry.

Can the ADF4107BRUZ-REEL generate non-integer multiples of the reference frequency?

No, the ADF4107BRUZ-REEL is an integer-N PLL synthesizer only. Its N-divider implements N = BP + A using fixed-modulus prescalers and binary A/B counters. It does not support fractional-N division, delta-sigma modulation, or dithering - output frequency resolution is strictly fREFIN/R, where R is the 14-bit reference divider value.

What package type is used for the ADF4107BRUZ-REEL?

The ADF4107BRUZ-REEL is supplied in a 16-lead TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch) with exposed thermal pad. Pin configuration matches Figure 3 in the Rev. D datasheet, and the exposed pad must be soldered to AGND for thermal and electrical performance compliance.