Analog Devices Inc./Maxim Integrated DS1233MS-5+

Overview

DS1233MS-5+ from Analog Devices (formerly Linear Technology) is a demonstration circuit board built around the LT5579 high-linearity upconverting mixer IC, designed for RF system evaluation in WiMAX, UMTS, and PCS bands. It supports IF input frequencies from 174–505 MHz, LO input from 1.1–4 GHz, and delivers RF output from 1.84–4.1 GHz with conversion gain up to 2.6 dB and OIP3 up to 28 dBm.

For engineers reviewing the DS1233MS-5+ datasheet, DS1233MS-5+ pinout, DS1233MS-5+ application, or DS1233MS-5+ equivalent, this board enables rapid validation of LT5579 performance across low-side and high-side LO configurations, including return loss, conversion gain stability, intermodulation distortion, and LO leakage under real-world RF test conditions.

Technical Context

The DS1233MS-5+ implements the LT5579 in a fully populated, impedance-matched layout optimized for specific frequency plans: version -A targets 3.6 GHz WiMAX (low-side LO), -B targets 2.6 GHz WiMAX (high-side LO), -C targets 2.14 GHz UMTS (high-side LO), and -D targets 1.95 GHz PCS (low-side LO). Each variant uses tailored microstrip matching networks and precision microwave components (e.g., AVX Accu-P capacitors) for IF and RF interfaces.

It features single-ended LO and RF ports with internal LO-to-RF isolation ≥34 dB and IF-to-LO isolation ≥73 dB, enabling clean upconversion without external baluns. The board operates at 3.3 V / 226 mA and maintains stable conversion gain over –40°C to +85°C with temperature coefficients as low as –0.020 dB/°C.

Key Specifications

Availability

DS1233MS-5+ is available at Aetrix Electronics and suitable for RF front-end prototyping, wireless infrastructure testing, and 4G/LTE transceiver development requiring stable component supply and validated reference designs.

Supply support for DS1233MS-5+ 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. (including legacy Linear Technology products) is a global leader in high-performance analog, mixed-signal, and RF ICs for communications, industrial, and automotive applications.

The DS1233MS-5+ belongs to Linear Technology's demonstration circuit product line, engineered specifically to accelerate evaluation and integration of the LT5579 mixer IC into high-frequency wireless systems.

FAQ

What is the DS1233MS-5+ used for?

The DS1233MS-5+ is a demonstration circuit board designed to evaluate the LT5579 upconverting mixer IC. It enables engineers to validate RF performance-including conversion gain, OIP3, LO leakage, and port return loss-in real-world configurations for WiMAX, UMTS, and PCS frequency bands. The DS1233MS-5+ is not a standalone IC but a ready-to-test hardware platform supporting rapid RF design verification.

Does the DS1233MS-5+ include the LT5579 IC?

Yes, the DS1233MS-5+ integrates the LT5579 mixer IC as its core active component. The board is fully assembled and tested, with all supporting passive components (precision capacitors, microstrip lines, termination resistors) optimized per variant (e.g., -A for 3.6 GHz WiMAX). No additional IC mounting or soldering is required to begin evaluation of the DS1233MS-5+.

What are the key differences between DS1233MS-5+ variants?

The DS1233MS-5+ variants (-A through -D) differ in IF/LO/RF frequency alignment and matching network component values-not in PCB layout or IC. For example, -A uses 456 MHz IF and low-side LO to target 3.6 GHz RF output, while -C uses 240 MHz IF and high-side LO for 2.14 GHz UMTS. Matching components (e.g., C1/C2, TL1/TL2, C8/L3) are uniquely selected per variant to maintain optimal impedance and linearity.

Can the DS1233MS-5+ be reconfigured for other frequencies?

Yes, the DS1233MS-5+ can be reconfigured for non-standard IF or RF frequencies by modifying matching components per the LT5579 datasheet and Application Note guidance. Table 2 (IF values) and Table 3 (RF values) in the Quick Start Guide provide component recommendations for common frequencies. However, reconfiguration requires component-level changes and recalibration-original factory tuning applies only to the labeled variant.

What power supply requirements does the DS1233MS-5+ have?

The DS1233MS-5+ requires a stable 3.3 V DC supply capable of delivering 226 mA under operating conditions. Voltage must be confirmed directly at the board's VCC and GND terminals to account for trace resistance. Exceeding 3.6 V risks damage, per the LT5579's absolute maximum rating. No onboard voltage regulation is provided-the DS1233MS-5+ relies on clean, well-decoupled external supply.