Analog Devices Inc./Maxim Integrated MAX2634EVKIT+

Overview

MAX2634EVKIT+ from Maxim Integrated is a fully assembled and tested evaluation kit designed to simplify RF performance validation of the MAX2634 315MHz/433MHz low-noise amplifier for automotive remote keyless entry (RKE) systems. It operates from 2.2V to 5.5V, features 50Ω SMA input/output connectors, delivers 15.5dB gain at 315MHz and 13.5dB at 433MHz, and measures noise figure of 1.25dB across both bands.

For engineers reviewing the MAX2634EVKIT+ datasheet, MAX2634EVKIT+ pinout, MAX2634EVKIT+ application, or MAX2634EVKIT+ equivalent, this kit enables rapid verification of LNA gain, noise figure, and input linearity (P1dB = –29dBm at 315MHz, IP3 = –16dBm) without external matching networks or support circuitry.

Technical Context

The MAX2634EVKIT+ implements two independent RF signal paths-one optimized for 315MHz (L1 = 56nH) and one for 433MHz (L2 = 33nH)-each with dedicated VCC headers (J1/J5), ground headers (J2/J8), RF I/O SMA connectors (J4/J6 and J3/J7), and enable jumpers (JP1/JP2). Each path uses the MAX2634AXT+ LNA in a 6-pin SOT23 package with internal biasing and shutdown control.

It supports single-supply operation from 2.2V to 5.5V, draws 2.5mA per channel, and maintains 50Ω impedance match at RF ports using controlled-impedance PCB traces and surface-mount Murata/AVX passive components. Layout follows RF best practices including local decoupling, short ground vias, and top-side RF ground plane connection.

Key Specifications

Availability

MAX2634EVKIT+ is available at Aetrix Electronics and suitable for automotive RKE development, RF front-end validation, and low-noise amplifier characterization requiring stable component supply, traceable sourcing, and full documentation support.

Supply support for MAX2634EVKIT+ 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) designs precision analog, mixed-signal, and RF ICs for automotive, industrial, and communications applications.

The MAX2634EVKIT+ belongs to Maxim's RF evaluation platform family, engineered specifically to accelerate prototyping and performance verification of ultra-low-noise, low-power RF amplifiers used in secure wireless access systems.

FAQ

What is the primary function of the MAX2634EVKIT+?

The MAX2634EVKIT+ is an evaluation kit that enables direct RF performance testing of the MAX2634 low-noise amplifier. It provides two fully matched, independently configurable 315MHz and 433MHz signal paths with SMA connectors, onboard biasing, and factory calibration-eliminating the need for external matching networks or discrete support circuitry during LNA validation.

Does the MAX2634EVKIT+ require additional components to operate?

No, the MAX2634EVKIT+ is fully assembled and tested. It requires only a DC power supply (2.2V–5.5V), RF signal generator, and spectrum analyzer or noise figure meter. All passive matching components-including Murata LQW15AN inductors and GRM capacitors-are populated, and the MAX2634AXT+ ICs are soldered in place on the board.

How do I configure the MAX2634EVKIT+ for 315MHz versus 433MHz operation?

To test at 315MHz, apply power to J1 (VCC_315) and J2 (GND), set JP1 to "ON", and connect RF signals to J4 (IN_315) and J6 (OUT_315). For 433MHz, use J5 (VCC_433), J8 (GND), JP2 "ON", and J3 (IN_433)/J7 (OUT_433). The two paths are electrically isolated and use different matching inductors (56nH vs. 33nH).

What RF performance metrics can be measured directly using the MAX2634EVKIT+?

Using standard lab equipment, the MAX2634EVKIT+ allows direct measurement of small-signal gain (15.5dB @ 315MHz, 13.5dB @ 433MHz), noise figure (1.25dB at both bands), input P1dB (–29dBm @ 315MHz), and input IP3 (–16dBm @ 315MHz). These values are validated per the kit's published performance table and quick-start procedure.

Is the MAX2634EVKIT+ RoHS compliant and lead-free?

Yes, the MAX2634EVKIT+ is RoHS compliant and lead(Pb)-free, as indicated by the "+" suffix in the part number and confirmed in the bill of materials. All supplied components-including MAX2634AXT+, Murata capacitors, AVX tantalums, and Johnson SMA connectors-meet current RoHS requirements and are marked accordingly in the official documentation.