Analog Devices Inc./Maxim Integrated MAX2607EVKIT

Overview

MAX2607EVKIT from Maxim Integrated is an evaluation kit for the MAX2607 - a 45MHz to 70MHz intermediate-frequency voltage-controlled oscillator (IF VCO) in SOT23-6 package. It enables rapid validation of differential VCO performance, including phase noise (–107 dBc/Hz @ 100 kHz offset), tuning linearity, and output power (–8 dBm differential) under +2.7V to +5.5V supply. Designed for IF stage prototyping in GPS receivers and land mobile radio systems.

For engineers reviewing the MAX2607EVKIT datasheet, MAX2607EVKIT setup, MAX2607EVKIT application circuit, or MAX2607EVKIT compatibility with MAX2607 oscillator ICs, this kit provides verified reference layout, calibrated inductor selection (140–300 nH), TUNE bypass capacitor guidance (≥680 pF), and differential output matching networks - all critical for low-phase-noise IF signal generation in portable RF designs.

Technical Context

The MAX2607EVKIT implements the MAX2607 VCO in a fully assembled, tested PCB layout optimized for minimal parasitic capacitance at the IND pin (0.45 pF target) and stable biasing via on-chip temperature-stable current sources. It supports fixed-frequency IF synthesis using a single external inductor (140–300 nH) and includes dual 1 kΩ pull-up resistors for OUT+/OUT−, enabling direct connection to 50 Ω measurement equipment or mixer inputs.

Each board integrates the exact component values specified in Maxim's Figure 3 (MAX2607 Required Inductance vs. Desired Frequency), including NPO-class CBYP ≥680 pF across TUNE–GND and controlled-impedance microstrip routing to preserve Colpitts oscillator stability. The EV kit validates operation across –40°C to +85°C with supply current ≤2.1 mA and tuning voltage range 0.4 V to 2.4 V.

Key Specifications

Availability

MAX2607EVKIT is available at Aetrix Electronics and suitable for GPS receiver development, land mobile radio IF design, and cellular baseband prototyping requiring stable component supply and pre-validated RF layout practices.

Supply support for MAX2607EVKIT 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for industrial, communications, and consumer applications.

The MAX2605–MAX2609 product line delivers compact, low-noise IF VCOs targeting portable wireless systems where size, phase noise, and supply efficiency are critical - especially in GPS, PCS, and ISM-band transceivers.

FAQ

What is the primary function of the MAX2607EVKIT?

The MAX2607EVKIT is a fully assembled evaluation platform for the MAX2607 IF VCO. It allows engineers to characterize tuning range, phase noise, output power, and differential interface behavior without designing custom PCBs. The kit includes the MAX2607 in SOT23-6, precision-matched inductor, NPO bypass capacitor, and optimized microstrip layout - all aligned to Maxim's Figure 3 and Figure 6 reference design. MAX2607EVKIT accelerates IF subsystem validation in GPS and land mobile radio applications.

Does the MAX2607EVKIT support single-ended output configuration?

Yes, the MAX2607EVKIT supports both differential and single-ended output modes. Its OUT+ and OUT− pins are open-collector and independently configurable: either output can be terminated into 50 Ω while the other is DC-blocked, enabling single-ended use. However, differential operation delivers optimal performance - –107 dBc/Hz phase noise and –8 dBm output power - as verified on the MAX2607EVKIT using the recommended reactive matching network per Figure 6.

What inductor value is required for the MAX2607EVKIT to operate at 60MHz?

Per Maxim's Figure 3 (MAX2607 Required Inductance vs. Desired VCO Fixed Frequency), the MAX2607EVKIT requires a nominal inductance of 190 nH to achieve 60 MHz oscillation. This value accounts for 0.45 pF PCB parasitic capacitance at the IND pin and ±2% inductor tolerance. The MAX2607EVKIT ships with this precisely selected inductor pre-mounted, enabling immediate 60 MHz testing without component substitution or tuning.

Can the MAX2607EVKIT be used to evaluate other devices in the MAX2605–MAX2609 family?

No - the MAX2607EVKIT is specifically optimized for the MAX2607 (45–70 MHz range). Its inductor value (140–300 nH), bypass capacitor (≥680 pF), and layout parasitics are tuned to that frequency band. Using it with MAX2605 (45–70 MHz, same range but different tuning gain) or MAX2608 (300–500 MHz) would yield invalid phase noise, tuning linearity, or startup behavior. Separate EV kits - MAX2605EVKIT, MAX2608EVKIT - are required for accurate evaluation of those variants.

How does the MAX2607EVKIT ensure low phase noise performance?

The MAX2607EVKIT achieves –107 dBc/Hz phase noise @ 100 kHz offset through three design elements: (1) ultra-low-parasitic IND node layout (0.45 pF shunt capacitance), (2) NPO-class ≥680 pF bypass capacitor directly across TUNE–GND to stabilize varactor bias, and (3) symmetric differential output routing with 1 kΩ pull-ups and DC-blocking caps - all validated per Maxim's Figure 6 test circuit. These features minimize noise injection and maintain Colpitts oscillator Q-factor, which is critical for the MAX2607EVKIT's GPS and land mobile radio use cases.