Analog Devices Inc. ADL5811ACPZ-R7

Overview

ADL5811ACPZ-R7 from Analog Devices is a high-linearity, double-balanced passive RF mixer with integrated IF amplifier and wideband LO amplifier, operating from 700 MHz to 2800 MHz RF, 250–2800 MHz LO, and 30–450 MHz IF. It delivers 7.5 dB power conversion gain, 27.5 dBm input IP3, and 10.7 dB SSB noise figure at 1900 MHz, enabling use in multiband cellular base station receivers and broadband radio link downconverters.

For engineers reviewing the ADL5811ACPZ-R7 datasheet, ADL5811ACPZ-R7 pinout, ADL5811ACPZ-R7 application, or ADL5811ACPZ-R7 equivalent, this page provides verified functional architecture, serial-port programmable RF/LO baluns, differential IF output interface, supply voltage flexibility (3.6–5.0 V), and thermal performance across −40°C to +85°C.

Technical Context

The ADL5811ACPZ-R7 implements a BiCMOS-based architecture combining square-wave limiting LO amplifiers (enabling high-side or low-side injection without energy storage elements) with doubly balanced passive mixer cores and integrated RF/LO balancing circuits. This enables single-ended RF and LO operation while maintaining >20 dB RF port return loss via serial-programmable tuning.

Its programmable RF balun (RFB register), LO bias control (VLO1–VLO4), IF gain setting (IFGM), and low-pass filter configuration (LPF bits) allow dynamic optimization of linearity, gain, and noise across frequency bands - all managed through a 3-wire SPI interface with timing compliance to t1–t7 min/max limits per Table 2.

Key Specifications

Pinout & Package

ADL5811ACPZ-R7 uses a 5 mm × 5 mm, 32-lead LFCSP package with exposed paddle (EPAD) that must be soldered to ground for thermal and electrical integrity. The package supports reflow-compatible assembly and achieves θJA = 25°C/W when EPAD is properly connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF mixer applications.

Compared with HMC774ALC3 and LT5560EDDB#TRPBF, the ADL5811ACPZ-R7 uniquely integrates LO amplification, IF buffering, and full SPI configurability in a single 32-lead LFCSP - delivering optimal balance of wideband linearity, programmable matching, and system-level integration for 4G/5G infrastructure designs.

Availability

ADL5811ACPZ-R7 is available at Aetrix Electronics and suitable for multiband cellular base station receivers, radio link diversity downconverters, multimode cellular extenders, and broadband spectrum analyzer front-ends requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for ADL5811ACPZ-R7 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 digital signal processing semiconductors, serving communications, industrial, automotive, and instrumentation markets since 1965.

The ADL5811ACPZ-R7 belongs to Analog Devices' high-linearity RF mixer product line, designed specifically for wideband infrastructure receivers requiring exceptional IP3, low noise figure, and flexible programmability in compact form factors.

FAQ

What is the recommended LO drive level for ADL5811ACPZ-R7?

The ADL5811ACPZ-R7 is specified for typical operation at 0 dBm LO drive, with acceptable range from −6 dBm to +10 dBm. At 0 dBm, it achieves 7.5 dB power conversion gain and 27.5 dBm input IP3 at 1900 MHz. Lower LO drive reduces current consumption but degrades linearity; higher drive increases gain slightly but risks saturation of the LO amplifier stages. The device's square-wave limiting LO amplifier architecture ensures stable performance across this range without external level-setting components.

Does ADL5811ACPZ-R7 require external baluns for single-ended RF operation?

No, the ADL5811ACPZ-R7 integrates programmable RF baluns controlled via the RFB register, enabling true single-ended RFIN operation across 700–2800 MHz without external transformers or discrete baluns. The internal balun structure allows >20 dB RF port return loss to be tuned digitally, eliminating manual matching networks and improving board-level repeatability. External AC coupling capacitor (e.g., 100 pF) is still required at RFIN, but no impedance transformation components are needed.

How does the ADL5811ACPZ-R7 handle LO leakage to RF and IF ports?

The ADL5811ACPZ-R7 achieves −25 dBm LO-to-RF leakage and −40 dBm LO-to-IF leakage due to its doubly balanced passive mixer core and isolated LO/RF/IF supply domains (VLO1–VLO4, VPIF, IFGD). These values are measured unfiltered and represent worst-case performance at 1900 MHz. The architecture inherently suppresses even-order LO harmonics, with 2LO-to-IF and 3LO-to-IF leakage measured at <−70 dBm across the band - reducing need for external LO filtering in most infrastructure applications.

Can ADL5811ACPZ-R7 operate from a 3.6 V supply?

Yes, the ADL5811ACPZ-R7 supports 3.6 V to 5.0 V single-supply operation. At 3.6 V, typical supply current drops to ~120 mA (vs. 185 mA at 5 V) while maintaining usable performance: power conversion gain remains ≥6 dB, input IP3 stays above 25 dBm, and noise figure increases by ≤1.5 dB across 700–2800 MHz. This enables direct compatibility with 3.3 V system rails using a 0.3 V headroom margin, making it suitable for power-sensitive remote radio units and portable test equipment.

What is the function of the IFGM pin on ADL5811ACPZ-R7?

The IFGM pin (Pin 31) on ADL5811ACPZ-R7 sets the bias current of the integrated IF amplifier via an external resistor to ground, allowing trade-off between conversion gain, noise figure, and linearity. A 910 Ω resistor yields nominal 7.5 dB gain and 10.7 dB noise figure at 1900 MHz; increasing resistance lowers current and improves noise figure at the expense of gain and IP3. This analog trim complements digital SPI control (RFB, LPF), giving designers fine-grained optimization of IF-stage performance without changing firmware.