NXP Semiconductors OM13533UL

Overview

OM13533UL from NXP Semiconductors is a demonstration board for the SA636 low-voltage FM IF system IC, integrating mixer, limiting IF amplifiers, quadrature detector, and high-speed RSSI. It supports 10.7 MHz and 9.8 MHz IF applications, operates from 2.7 V to 5.5 V, delivers 600 kHz data bandwidth, and enables rapid evaluation of DECT, FSK/ASK, and portable receiver designs.

For engineers reviewing the OM13533UL datasheet, OM13533UL pinout, OM13533UL application, or OM13533UL equivalent, this board provides validated RF layout, pre-characterized 240/229.3 MHz and 110.592/120.392 MHz DECT test configurations, and direct access to SA636 signal paths including DATA_OUT, RSSI_OUT, POWER_DOWN_CTRL, and QUADRATURE_IN for functional validation and system integration.

Technical Context

The OM13533UL implements two distinct SA636 reference configurations: one using SSOP20-packaged SA636DK/01 (P1–P10 header layout) for 110.592 MHz RF / 9.8 MHz IF DECT evaluation, and another using HVQFN20-packaged SA636BS (U1) for 240 MHz RF / 10.7 MHz IF testing with optimized thermal pad grounding and 47 nH/33 nH matching inductors.

Each configuration includes full decoupling (C1–C22), ceramic filter interfaces (FLT1/FLT2), SMA RF/LO inputs, buffered RSSI and audio outputs, power-down control via JP3, and selectable trim capacitors (C8, C6) for impedance tuning - all aligned with NXP's recommended layout practices for stability and sensitivity.

Key Specifications

Availability

OM13533UL is available at Aetrix Electronics and suitable for DECT base station development, portable FM receiver prototyping, FSK/ASK data receiver validation, and RF front-end design requiring stable component supply and reference-grade layout fidelity.

Supply support for OM13533UL 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

NXP Semiconductors is a global semiconductor leader founded by Philips, specializing in secure connectivity solutions for automotive, industrial, and communication markets.

The OM13533UL belongs to NXP's SA636 evaluation platform family, designed to accelerate time-to-test for battery-powered, wideband FM IF systems in digital cordless telephony and wireless data receivers.

FAQ

What is the OM13533UL used for?

The OM13533UL is an NXP-certified evaluation board for the SA636 FM IF system IC. It enables functional verification of mixer performance, RSSI linearity, wideband data demodulation (≥600 kHz), and power-down behavior under real-world RF conditions. Engineers use OM13533UL to validate 110.592/120.392 MHz DECT and 240/229.3 MHz VHF receiver architectures before committing to custom PCB design.

Does the OM13533UL support both SA636 package variants?

Yes, the OM13533UL supports both SA636DK/01 in SSOP20 (SOT266-1) and SA636BS in HVQFN20 (SOT917-1). The board provides separate layout sections: P1–P10 headers for SSOP20-based DECT evaluation and U1 footprint with thermal pad routing for HVQFN20-based 240 MHz testing - each with dedicated filter networks and matching components.

How is power delivered to the OM13533UL?

OM13533UL accepts +3 V DC via J3 (3-pin header), with on-board regulation handled by a 10 Ω series resistor (R2) and local decoupling using 15 μF (C7), 0.1 μF (C5), and 0.1 μF (C10) capacitors. No external voltage regulator is required - the board directly powers the SA636 ICs within their 2.7 V to 5.5 V operating range.

Can the OM13533UL be used for RSSI calibration?

Yes, OM13533UL provides direct access to RSSI_OUT and RSSI_FEEDBACK pins, enabling precise calibration of the SA636's temperature-compensated logarithmic RSSI output across its >90 dB dynamic range. The board's low-noise layout, grounded thermal pad, and matched decoupling minimize offset drift - critical for calibrating RSSI voltage vs. IF level (e.g., −118 dBm → 0.2–0.5 V for SA636DK/01).

Is the OM13533UL compatible with standard lab equipment?

Yes, OM13533UL features SMA connectors for RF input (J1), LO injection (J2), and test point access to DATA_OUT, RSSI_OUT, and POWER_DOWN_CTRL. It integrates seamlessly with RF signal generators, spectrum analyzers, oscilloscopes, and DC voltmeters - as confirmed in NXP's Figure 20 test setup using 110.592 MHz RF and 120.392 MHz LO sources.