Analog Devices Inc./Maxim Integrated MAX2691EVKIT#

Overview

MAX2691EVKIT# from Maxim Integrated is an evaluation kit for the MAX2691 L2-band GPS low-noise amplifier, designed to validate RF performance in precision GNSS receiver front-ends. It supports 1227MHz operation with 17.5dB gain, 0.93dB noise figure, and integrated 50Ω output matching - enabling rapid prototyping of asset-tracking and avionics navigation systems.

For engineers reviewing the MAX2691EVKIT# datasheet, MAX2691EVKIT# pinout, MAX2691EVKIT# application, or MAX2691EVKIT# equivalent, this kit provides verified Gerber files, BOM, schematic, and layout guidance for LNA integration into compact GPS L2 receivers operating from 1.6V–3.6V supply.

Technical Context

The MAX2691EVKIT# implements the MAX2691 IC in a 4-bump wafer-level package (WLP) with validated input matching (8.2nH inductor + 100nF capacitor) and output DC-blocking (10pF). It operates across -40°C to +85°C and supports shutdown via 25kΩ pull-down on RFOUT/SHDN.

Designed for GPS L2 band (1227MHz), the kit delivers measured AC performance including 13.3–17.5dB power gain, -3.0dBm IIP3, -8.5dBm input P1dB, and >10.9dB input return loss - all traceable to the MAX2691's SiGe BiCMOS process and internal 50Ω output match.

Key Specifications

Availability

MAX2691EVKIT# is available at Aetrix Electronics and suitable for precision navigation, telematics asset tracking, avionics GNSS receivers, and industrial RTK modules requiring stable component supply and validated RF reference designs.

Supply support for MAX2691EVKIT# 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for precision sensing, power management, and communications.

The MAX2691 product line targets GPS/GNSS front-end amplification, delivering ultra-low-noise, high-linearity LNA performance in miniature WLP packages for space-constrained navigation systems.

FAQ

What is the primary function of the MAX2691EVKIT#?

The MAX2691EVKIT# is an evaluation platform for the MAX2691 LNA IC, providing a fully assembled and tested PCB with schematic, Gerber, and BOM files. It enables engineers to characterize 1227MHz GPS L2 signal amplification, verify gain/noise/IIP3 performance, and accelerate layout validation before custom design - all using the exact MAX2691 device in its native 4-bump WLP.

Does the MAX2691EVKIT# include the MAX2691 IC?

Yes, the MAX2691EVKIT# includes one populated MAX2691EWS+T IC in a 4-bump wafer-level package (WLP), mounted with proper RF grounding, decoupling (10pF at VCC), and matching components (8.2nH inductor, 100nF/10pF capacitors). The board is pre-configured for active mode but supports shutdown via external 25kΩ resistor on RFOUT/SHDN.

Can the MAX2691EVKIT# be used for frequencies outside GPS L2?

No - the MAX2691EVKIT# is optimized exclusively for 1227MHz GPS L2 operation. Its input matching network (8.2nH + 100nF), layout, and component selection are tuned for that band. Performance degrades significantly outside ±50MHz of 1227MHz; the MAX2691 IC itself is specified only for L2-band use per its datasheet AC characteristics table.

What documentation ships with the MAX2691EVKIT#?

The MAX2691EVKIT# includes access to the full MAX2691EVKIT# design package: schematic PDF, Gerber files, PADS layout file, bill of materials (BOM), and assembly drawing - all hosted on Maxim's website (now Analog Devices). No physical printed documents ship; digital resources are linked directly from the product page and datasheet.

How is shutdown implemented on the MAX2691EVKIT#?

Shutdown on the MAX2691EVKIT# is implemented by pulling the RFOUT/SHDN bump (A2) to ground through a 25kΩ external resistor, as shown in the Typical Application Circuit. This places the MAX2691 IC into low-current mode (4–20µA), disabling RF amplification while preserving bias integrity. The board includes test points and routing to support this configuration without soldering modifications.