Texas Instruments RI-TRP-R9QL-20

Overview

RI-TRP-R9QL-20 from Texas Instruments is a 30 mm disk-shaped, batteryless LF RFID transponder operating at 134.2 kHz with HDX (Half Duplex) transmission, ISO 11784/11785 compliance, 64-bit read-only memory, and IP67-rated POM housing. It delivers stable read performance in access control, vehicle ID, and asset tracking systems where non-metallic mounting and environmental resilience are required.

For engineers reviewing the RI-TRP-R9QL-20 datasheet, RI-TRP-R9QL-20 pinout, RI-TRP-R9QL-20 application, or RI-TRP-R9QL-20 equivalent, key selection factors include its HDX modulation scheme, 70 ms typical read time, –25°C to +85°C operating temperature range, and immunity to non-metallic material interference - all critical for embedded RFID reader integration and industrial tag deployment.

Technical Context

This transponder uses Half-Duplex (HDX) communication with FSK modulation (134.2 kHz / 123.2 kHz), enabling robust bidirectional data exchange without an internal power source. Its patented tuning process ensures consistent coupling efficiency and read/write stability across varying antenna geometries and mounting substrates.

Designed for passive operation, the RI-TRP-R9QL-20 draws energy solely from the reader's magnetic field and supports only read functionality - distinguishing it from its read/write counterpart RI-TRP-W9QL-20. Memory is factory-programmed and immune to x-ray exposure and standard EMC environments.

Key Specifications

Pinout & Package

RI-TRP-R9QL-20 is a fully passive, two-terminal resonant LC device housed in a 29.4 mm × 8.4 mm disk package (RFIDP) with no external pins or solderable terminals. It contains an integrated coil and tuned capacitor; electrical interface is exclusively via magnetic coupling to an external reader antenna.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar passive LF RFID transponder applications.

Compared with RI-TRP-R9QL-20, RI-TRP-R9QL-30 offers identical electrical and mechanical performance with active supply chain support, while EM4102 provides basic 125 kHz compatibility at reduced environmental robustness and read reliability.

Availability

RI-TRP-R9QL-20 is available at Aetrix Electronics and suitable for access control, vehicle identification, and container tracking applications requiring stable component supply despite its OBSOLETE status - inventory is held for legacy system continuity and repair fulfillment.

Supply support for RI-TRP-R9QL-20 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

Texas Instruments is a global semiconductor company founded in 1930, specializing in analog, embedded processing, and connectivity technologies with leadership in industrial, automotive, and RFID solutions.

The RI-TRP-R9QL series belongs to TI's legacy LF RFID transponder product line, engineered specifically for high-reliability, maintenance-free identification in demanding physical environments - not general-purpose ICs but optimized passive RF devices.

FAQ

What is the operating frequency of the RI-TRP-R9QL-20?

The RI-TRP-R9QL-20 operates at a fixed resonance frequency of 134.2 kHz, compliant with ISO/IEC 11784/11785 standards. This LF band enables reliable magnetic coupling with reader antennas and global regulatory acceptance for animal, vehicle, and industrial identification. Its frequency is determined by internal LC tuning and cannot be adjusted.

Is the RI-TRP-R9QL-20 a read-only or read/write device?

The RI-TRP-R9QL-20 is strictly a read-only transponder with 64 bits of factory-programmed, non-volatile memory. Unlike the RI-TRP-W9QL variants, it does not support programming in the field. Its ID remains immutable after manufacture, ensuring data integrity in security-critical applications like access control.

What does the "-20" suffix mean in RI-TRP-R9QL-20?

The "-20" suffix denotes a specific packaging configuration used in TI's historical ordering system - in this case, an obsolete tape-and-reel format with unspecified quantity per reel. It is distinct from the active -30 variant (250 pcs/reel, Pb-Free). The core device functionality and specifications remain identical across -00, -20, and -30 suffixes.

Can the RI-TRP-R9QL-20 be embedded in metal environments?

No - the RI-TRP-R9QL-20 is explicitly insensitive to non-metallic materials only. Mounting directly on or within metal structures detunes its resonant circuit and blocks magnetic coupling. For metallic surfaces, TI recommends using purpose-built on-metal transponders with ferrite shielding or alternative mounting methods such as recessed non-conductive housings.

What is the maximum operating temperature for the RI-TRP-R9QL-20?

The RI-TRP-R9QL-20 is rated for continuous operation from –25°C to +85°C. This extended upper limit distinguishes it from the RI-TRP-W9QL-20 (–25°C to +70°C) and makes it suitable for under-hood automotive use, outdoor waste bins, and industrial enclosures exposed to solar loading or ambient heat buildup.