TRF4903PWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TRF4903PWR is a single-chip ISM-band RF transmitter from Texas Instruments, covering 315 MHz to 915 MHz with programmable output power and data encoding. Housed in a 24-pin TSSOP package suitable for compact wireless modules. From $3.00 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- TRF4903PWR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TRF4903PWR?
- Frequency coverage from 315 MHz to 915 MHz supporting global ISM-band sub-GHz wireless standards in a single device
- Programmable output power level enabling compliance with regional EIRP limits across FCC, ETSI, and ARIB regulations
- Integrated data encoding and modulation in a 24-pin TSSOP footprint for compact, BOM-efficient wireless transmitter designs
What is TRF4903PWR used for?
TRF4903PWR is used in short-range wireless sensor nodes, remote keyless entry systems, and industrial telemetry transmitters operating in the 315 MHz, 433 MHz, and 915 MHz ISM bands. It simplifies regulatory compliance across North American and European markets by supporting multiple frequencies with software-selectable output power, reducing the need for multiple transmitter hardware variants.
What are the specifications of TRF4903PWR?
| Pbfree Code | No |
| YTEOL | 0 |
| JESD-30 Code | R-PDSO-G24 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP24,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.043mA |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Telecom IC Type | RF AND BASEBAND CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.01 |
Where can I find the TRF4903PWR datasheet?
TRF4903PWR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TRF4903PWR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which frequency bands does TRF4903PWR support, and which regulatory markets do those bands cover?
TRF4903PWR operates across 315 MHz to 915 MHz, covering the 315 MHz band used in North American garage openers and RKE systems, the 433.92 MHz European ISM band regulated by ETSI EN 300 220, and the 915 MHz FCC Part 15 band used in US industrial telemetry. A single PCB design can target all three markets by changing only firmware frequency registers, eliminating separate hardware spins for each region.
How does the programmable output power feature in TRF4903PWR help meet regional wireless regulations?
TRF4903PWR allows output power to be set in software steps, enabling the designer to cap EIRP below the −10 dBm to +10 dBm limits that differ between FCC Part 15, ETSI EN 300 220, and ARIB STD-T67. This avoids costly attenuator components and allows a single module to pass certification in multiple regions simply by loading region-specific firmware configuration, saving 2–4 weeks of re-certification time.
What modulation schemes does TRF4903PWR support for short-range sensor telemetry links?
TRF4903PWR supports OOK (on-off keying) and FSK (frequency-shift keying) modulation. OOK is used for simple sensor state-change transmissions at data rates up to 100 kbps, while FSK provides higher spectral efficiency and better noise immunity at equivalent data rates of up to 100 kbps over distances of 100 m to 300 m at 915 MHz with a 0 dBm output and a 3 dBd receive antenna.
How compact is the TRF4903PWR TSSOP-24 package for integration into a wireless sensor module?
The 24-pin TSSOP package measures approximately 7.8 mm × 4.4 mm with a 0.65 mm pin pitch, occupying about 34 mm² of PCB area. This compact footprint allows the RF transmitter to fit alongside a microcontroller and coin-cell battery holder on a PCB smaller than 50 mm × 30 mm, a common form factor for 2-AA or CR2032-powered wireless sensor nodes.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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