MRFIC1501R2 - 1.6 GHz GPS GaAs Low-Noise Amplifier | NXP
MPN: MRFIC1501R2 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MRFIC1501R2 Overview
A Low-Noise Amplifier (LNA) is a critical first-stage active component in any radio receiver architecture, placed immediately after the antenna to set the system noise figure. An LNA's role in the broader hierarchy is: LNA -> RF amplifier -> amplifier IC -> RF/microwave semiconductor -> signal chain IC. GaAs (Gallium Arsenide) process technology is favored for high-frequency, low-noise RF amplifiers because GaAs offers higher electron mobility and lower noise figure than silicon at microwave frequencies, making it ideal for sub-2 GHz GPS L1 and L-band applications where every fraction of a dB of noise figure directly impacts receiver sensitivity and time-to-first-fix.
Key features of the MRFIC1501R2 include its broadband two-stage topology, integrated matching network, single-supply operation, and low current consumption suitable for portable GPS receivers. The GaAs MMIC construction provides repeatable RF performance across production lots and eliminates the need for manual tuning during manufacturing. The part is designed for 50-ohm input and output interfaces, simplifying integration with standard GPS SAW filters and ceramic patch antennas.
Typical applications include GPS navigation modules in automotive telematics, asset tracking devices, handheld GPS receivers, surveying equipment, and cellular-assisted location services. The MRFIC1501R2 is positioned as a low-cost alternative to higher-frequency GaAs LNAs and is widely second-sourced through Rochester Electronics and authorized distributors for legacy designs.
When designing with this device, attention must be paid to PCB layout, RF grounding, and bias decoupling because GaAs amplifiers are sensitive to supply noise and improper grounding. The two-stage topology requires careful attention to interstage matching and stability; consult the manufacturer application section for recommended evaluation board layout, and confirm gain and noise figure performance across the full GPS L1 band (1575.42 MHz ±10 MHz) before committing the design to production.
This page consolidates distributor availability, datasheet references, and design guidance for the MRFIC1501R2 to assist engineers working on legacy or replacement GPS receiver designs.
Drop-in alternatives for MRFIC1501R2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MRFIC1501R2
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MRFIC1501R2 Maximum Ratings & Electrical Characteristics
| Function | Two-stage GaAs Low-Noise Amplifier |
| Primary Application | GPS L1 / L-band satellite receiver front-end |
| Operating Frequency | 1.6 GHz (GPS L1 band) |
| Process Technology | GaAs MMIC |
| Number of Stages | 2 (cascaded gain stages) |
| Topology | Integrated two-stage LNA with on-chip matching |
| Input / Output Impedance | 50 ohm (nominal) |
| Package | Micro-lead plastic surface-mount package (8-pin or similar) |
| Mounting Type | Surface Mount |
MRFIC1501R2 micro-lead plastic surface-mount package (8-pin or similar) Pin Configuration Guide
Pin configuration for MRFIC1501R2 (micro-lead plastic surface-mount package (8-pin or similar) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MRFIC1501R2.
Refer to the datasheet for full pin configuration.
Typical Applications
MRFIC1501R2 is suitable for 7 applications: GPS L1 Front-End Module, Automotive Telematics GPS Receiver, Handheld Consumer GPS Navigator, L-Band Satellite Receiver Front-End, Asset Tracking and Logistics Devices, Surveying and Precision GPS Equipment, Cellular-Assisted Location (E911) Modules.
GPS L1 Front-End Module
The MRFIC1501R2 is designed as the first active stage in a 1.575 GHz GPS L1 receiver chain, sitting between the ceramic patch antenna and the GPS SAW filter or downconverter. Its two-stage GaAs topology delivers the low noise figure required to preserve receiver sensitivity for weak satellite signals, while the 50-ohm on-chip matching simplifies interface with standard SAW filters. Placed directly after the antenna with bias fed via an inductor or active bias network, it provides enough gain to overcome downstream cable and filter losses. Unlike silicon bipolar LNAs, the GaAs process achieves a measurably lower noise floor at 1.6 GHz, which is the dominant trade-off when selecting this part over silicon alternatives for high-sensitivity GPS modules.
Recommended
Automotive Telematics GPS Receiver
Fleet telematics and vehicle tracking boxes require reliable position reporting in challenging signal environments, where the MRFIC1501R2's low-noise two-stage GaAs design helps maintain lock on weak satellites under foliage or urban canyon conditions. Operating at 1.575 GHz with typical GPS L1 front-end chain gains, the part pairs naturally with an automotive-grade GPS receiver IC and SAW filter. Estimated: combining this LNA with a downstream SAW filter and downconverter typically yields a cascaded noise figure under 2 dB. Note that the MRFIC1501R2 is consumer-grade rather than AEC-Q100 qualified, so automotive programs should perform additional qualification or select an automotive-qualified LNA for new platforms.
Recommended
Handheld Consumer GPS Navigator
Battery-powered handheld GPS devices benefit from the MRFIC1501R2's two-stage integrated topology, which reduces BOM cost and PCB area versus a discrete LNA-plus-filter-plus-matching implementation. The GaAs MMIC operates from a low supply current suitable for portable devices, and the surface-mount micro-lead package enables compact board layouts. Placed at the antenna input with the SAW filter downstream, it provides the gain and noise figure required for time-to-first-fix performance in cold-start scenarios. Trade-off: GaAs amplifiers typically draw more current than silicon LNAs, so very low-power wearable applications may benefit from a more modern silicon LNA with equivalent noise figure.
Recommended
L-Band Satellite Receiver Front-End
Beyond GPS, the MRFIC1501R2's broadband 1.6 GHz GaAs LNA topology makes it usable in other L-band satellite receiver applications including satellite radio, GLONASS L1, and certain IoT satellite downlinks in the 1.5–1.7 GHz range. The two-stage design provides the gain margin to drive downconverter mixers while maintaining a low noise figure to preserve link margin against satellite EIRP variations. Used with an L-band bandpass filter at the input and a SAW filter between stages, it can form a complete low-noise front-end for non-GPS L-band receivers. Trade-off: the part is optimized around 1.575 GHz, so performance at the band edges of the L-band range should be verified using the datasheet gain and noise figure curves.
Recommended
Asset Tracking and Logistics Devices
Asset tracking hardware deployed in shipping containers, pallets, and remote equipment needs a GPS LNA that can pull weak signals from low-quality patch antennas in obstructed environments. The MRFIC1501R2's low-noise two-stage GaAs design provides the sensitivity margin needed for indoor or partially-sky-blocked tracking scenarios, where every fraction of a dB of noise figure directly improves fix rate and position accuracy. Operating from a single low-current supply with minimal external components, it integrates well into compact tracking modules with cellular IoT modems. Trade-off: for ultra-low-power trackers that spend most of their time in sleep mode, the GaAs bias current may not be acceptable; consider a duty-cycled LNA topology in such cases.
Recommended
Surveying and Precision GPS Equipment
Precision surveying receivers (GIS, mapping, geodesy) demand the lowest possible noise figure to maximize carrier-to-noise ratio and improve real-time kinematic (RTK) fix quality. The MRFIC1501R2's two-stage GaAs topology is well matched to this need, providing the gain and noise performance to support centimeter-level positioning when combined with a high-quality geodetic antenna. Placed at the antenna feed with a SAW filter and downstream receiver IC, it enables the cascaded noise figure required for high-precision carrier phase measurements. Trade-off: modern precision receivers often integrate the LNA into the antenna assembly itself; the MRFIC1501R2 is more relevant when the LNA must be on the receiver board rather than in the antenna.
Recommended
Cellular-Assisted Location (E911) Modules
Cellular modules with embedded GPS for E911 and location-based services rely on a sensitive GPS front-end to acquire satellites quickly even in indoor or urban environments. The MRFIC1501R2's two-stage GaAs LNA provides the noise figure and gain margin to support faster time-to-first-fix in assisted-GPS scenarios, where the cellular network supplies ephemeris data but the GPS RF chain still must acquire weak signals. Used between the shared GPS/cellular antenna and the GPS SAW filter, it preserves the link budget required for reliable location fixes during emergency calls. Trade-off: cellular coexistence requires careful filtering between the LNA and the cellular PA; SAW filter selection and isolation layout are critical when sharing antennas across GPS and cellular bands.
Recommended
Recommended Products Summary
Engineering reference data for MRFIC1501R2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MRFIC1501R2 |
|---|---|---|
| Package | Micro-lead plastic surface-mount (RF package) | Micro-lead plastic (same as target) |
| Brand | NXP Semiconductors (formerly Motorola/Freescale) | NXP Semiconductors |
| Function | Two-stage GaAs LNA for 1.6 GHz GPS | Two-stage GaAs LNA for 1.6 GHz GPS |
| Operating Frequency | 1.6 GHz (GPS L1) | 1.6 GHz (GPS L1) |
| Process Technology | GaAs MMIC | GaAs MMIC |
| Lifecycle Status | NRND (Not Recommended for New Designs) | NRND |
| Pin-to-Pin Compatibility | Reference (target part) | Identical (self-reference) |
| Match Percentage vs Target | 100% (this is the target) | 100% |
Key Differentiators
- Two-stage GaAs topology integrated on a single die (vs Discrete two-stage LNA using two silicon bipolar transistors)
- On-chip 50-ohm matching at input and output (vs RF amplifier requiring external LC matching networks)
- Long-term availability through Rochester Electronics and authorized distributors (vs Obsolete or hard-to-source GPS LNA alternatives)
Design Notes
At 1.575 GHz, PCB layout is critical for the MRFIC1501R2. Use a continuous ground plane on the top layer under the package, stitch the ground paddle to the bottom layer with multiple vias, and route the RF input/output traces as 50-ohm controlled-impedance lines (typically 0.5–0.8 mm wide on 0.2 mm FR-4 stack-ups). Estimated: each nanohenry of stray inductance adds approximately 1 ohm of reactance at 1.6 GHz, enough to detune the on-chip matching networks and degrade noise figure.
Decouple the DC supply pin with a 100 nF ceramic chip capacitor placed within 1–2 mm of the pin, plus a larger 1 uF or 2.2 uF bulk capacitor to filter low-frequency supply noise. GaAs amplifiers are particularly sensitive to supply ripple, which can modulate the gain and degrade the GPS carrier-to-noise ratio. Estimated: 10 mV of supply ripple can introduce measurable C/N0 degradation in a high-sensitivity GPS receiver.
Do not bypass the manufacturer evaluation board layout when prototyping the MRFIC1501R2. GaAs two-stage LNAs are prone to oscillation if the interstage matching, bias network, or grounding differs significantly from the reference design. If the part oscillates, check that the input and output are properly terminated in 50 ohms, that no DC is present on the RF pins, and that the bias inductor or resistor network matches the datasheet recommendation. Adding small ferrite beads or series resistors can often damp parasitic oscillations.
When integrating the MRFIC1501R2 with a downstream GPS SAW filter, keep the trace between LNA output and SAW input as short as possible (typically under 5 mm) to minimize insertion loss at 1.575 GHz. Estimated: each millimeter of microstrip at this frequency on FR-4 contributes roughly 0.05 dB of loss, which directly degrades the cascaded noise figure. Maintain 50-ohm impedance on this interconnect and avoid routing near noisy digital or switching power traces.
Compliance Information
Lifecycle status is NRND per current distributor listings. RoHS, lead-free, and halogen-free status was not provided in the verified web data and should be confirmed directly with the manufacturer or distributor before use in new designs. The original Motorola/Freescale datasheet pre-dates widespread RoHS documentation for this part family.
