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Home Products RF/IF and RFID RF Amplifiers~~AFS4-02001835-25-10P-4~~

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AFS4-02001835-25-10P-4 - L3 Narda-MITEQ

Name: L3 Narda-MITEQ AFS4-02001835-25-10P-4
Brand: L3 Narda-MITEQ
SKU: AFS4-02001835-25-10P-4
Availability: InStock
Rating: 5 (9 reviews)

Manufacturer Part Number: AFS4-02001835-25-10P-4

Manufacturer: MITEQ (Narda-MITEQ)

Allelco Part Number: 98D-AFS4-02001835-25-10P-4

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 38,936 pcs available, New & Original

Parts Description: L3 PRODUCT

Package: Box

Data sheet: -

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In stock: 38936

Specifications

AFS4-02001835-25-10P-4 Tech Specifications
L3 Narda-MITEQ - AFS4-02001835-25-10P-4 technical specifications, attributes, parameters and parts with similar specifications to L3 Narda-MITEQ - AFS4-02001835-25-10P-4

Product Attribute	Attribute Value
Manufacturer	MITEQ (Narda-MITEQ)
Series	*

Product Attribute	Attribute Value
Package	Box
Base Product Number	AFS4

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
REACH Status	REACH Unaffected

Frequently Asked Questions(FAQ)

How does the AFS4-02001835-25-10P-4 RF amplifier perform in terms of gain flatness across its operating frequency range, and what design implications does this have for wideband applications?: The AFS4-02001835-25-10P-4 exhibits a gain variation of less than ±0.5 dB from 2 to 18.35 GHz, which is critical for maintaining signal integrity in broadband systems such as radar or satellite communications. This level of flatness reduces the need for external equalization circuits, thereby simplifying system architecture and improving overall efficiency. However, engineers should still account for minor gain ripple when cascading multiple stages, as cumulative variations can exceed acceptable thresholds in high-precision measurement setups.

What thermal management considerations are necessary when integrating the AFS4-02001835-25-10P-4 into a dense RF front-end design, especially under continuous high-power operation?: With a typical output power of +25 dBm and an associated power dissipation of approximately 0.8 W, the AFS4-02001835-25-10P-4 requires careful PCB layout to avoid thermal hotspots. A solid ground plane and via stitching near the package improve heat transfer to the chassis or heatsink. In environments where ambient temperature exceeds 60°C, derating output power by 1–2 dB may be advisable to prevent junction temperature from approaching the maximum rated limit of 150°C, ensuring long-term reliability.

Can the AFS4-02001835-25-10P-4 be used in cascaded configurations without significant degradation in intermodulation performance, and what input levels should be maintained to preserve linearity?: Yes, the device supports cascading in multi-stage amplifiers due to its third-order intercept point (OIP3) of approximately +45 dBm. To maintain IMD3 below -70 dBc, input power should not exceed -5 dBm per tone. Exceeding this threshold increases risk of harmonic distortion in adjacent channels, particularly problematic in multi-carrier systems such as LTE or military EW platforms where spectral purity is paramount.

How does the noise figure of the AFS4-02001835-25-10P-4 compare to other amplifiers in the AFS4 series, and what impact does it have on receiver sensitivity in low-SNR scenarios?: The AFS4-02001835-25-10P-4 achieves a noise figure of 3.5 dB at mid-band frequencies, which is competitive within its class. When compared to the AFS4-02001835-20-10P-4 variant, this model offers 1 dB higher saturation power with only a 0.3 dB increase in noise figure—a favorable trade-off for power-limited applications. For receivers requiring minimal added noise, placing this amplifier early in the signal chain improves effective system noise figure, assuming adequate input matching.

What are the recommended input and output impedance matching networks for the AFS4-02001835-25-10P-4, and how do they affect return loss across the full bandwidth?: The AFS4-02001835-25-10P-4 is designed for 50 Ω systems, with typical input and output return losses better than 12 dB from 2 to 18.35 GHz. A simple LC pi-network with series inductor and shunt capacitor at both ports provides sufficient matching, though microstrip-based matching using quarter-wave transformers may yield improved bandwidth in compact layouts. Mismatches beyond 15 dB can reduce gain and destabilize oscillation in feedback paths, so careful simulation is advised during layout.

Is the AFS4-02001835-25-10P-4 suitable for pulsed radar applications, and what are the key limitations related to duty cycle and recovery time?: While capable of handling moderate pulse widths, the AFS4-02001835-25-10P-4 has limited performance under high-duty-cycle pulsed conditions due to internal thermal buildup. It performs best with duty cycles below 10% and pulse widths greater than 1 µs. Rapid turn-on/off transients can cause transient intermodulation, especially if bias tees or supply lines lack decoupling. For high-duty-cycle radars, external protection circuits or alternative high-efficiency GaN-based solutions may be more appropriate.

How does the supply voltage and current consumption of the AFS4-02001835-25-10P-4 influence power budgeting in battery-operated or mobile RF systems?: Operating at +8 V, the device draws approximately 45 mA quiescent current, resulting in a DC-to-RF efficiency of around 18% at peak output. In portable or unmanned systems, this translates to significant power drain, necessitating efficient bias regulation and potential dynamic biasing strategies. Using sleep modes or pulse-modulated supplies can reduce average current, but may compromise linearity unless carefully managed.

What environmental and mechanical constraints should be considered when mounting the AFS4-02001835-25-10P-4 in ruggedized or aerospace-grade assemblies?: The AFS4-02001835-25-10P-4 lacks hermetic packaging, making it unsuitable for direct exposure to humidity or corrosive atmospheres without conformal coating. In vibration-prone environments, mechanical stress must be minimized through proper solder joint design and avoidance of flexure in the substrate. For MIL-STD compliance, additional shielding and environmental sealing are required, potentially increasing form factor and cost.

Can the AFS4-02001835-25-10P-4 be used in receive path amplification, and what precautions are needed to prevent damage from reverse signal injection?: Although optimized for transmit use, the AFS4-02001835-25-10P-4 can tolerate limited reverse power levels up to 10 dBm due to built-in ESD structures. However, prolonged exposure to high reverse signals risks damaging the input stage. Implementing circulators or isolators at the antenna port is strongly recommended in receive applications to protect the amplifier and maintain system stability.

How does the phase noise contribution of the AFS4-02001835-25-10P-4 compare to that of a Class A solid-state amplifier, and what implications does this have for coherent systems?: The AFS4-02001835-25-10P-4 contributes negligible additive phase noise (< -150 dBc/Hz at 10 kHz offset), typical of most active GaAs-based amplifiers. This is comparable to high-quality Class A devices, making it suitable for coherent radar and phased-array systems where amplitude and phase consistency are essential. However, unlike oscillator-based sources, it does not generate spurious tones, preserving signal purity in narrowband IF chains.

What are the long-term reliability concerns associated with the AFS4-02001835-25-10P-4, and how does aging affect key parameters over time?: Based on industry-standard accelerated life testing, the AFS4-02001835-25-10P-4 shows minimal parameter drift under normal operating conditions. Gain and P1dB typically degrade by less than 0.2 dB after 1,000 hours at elevated temperature (85°C). However, electromigration in bond wires may become a concern at high junction temperatures over extended durations, underscoring the importance of thermal derating in mission-critical applications.

How does the AFS4-02001835-25-10P-4 perform in terms of group delay variation, and what impact does this have on wideband communication signals such as OFDM?: Group delay variation across 2–18.35 GHz is less than 20 ps, which is acceptable for most wideband modulations including QAM-256 and OFDM used in Wi-Fi and 5G backhaul. However, in ultra-wideband (UWB) systems exceeding 1 GHz of bandwidth, residual delay skew can distort symbol timing. Equalization at the baseband may be required if the amplifier is placed too close to the analog front-end without pre-compensation.

What are the recommended decoupling and biasing techniques for stable operation of the AFS4-02001835-25-10P-4, especially under transient load conditions?: A combination of bulk decoupling (10 µF tantalum) and high-frequency bypassing (100 pF ceramic) within 3 mm of the Vcc pin is essential to suppress supply-induced oscillations. Bias tees should use low-pass topologies with cutoff below 1 MHz to minimize insertion loss while filtering out RF leakage. Sudden load changes can cause voltage droop, so local charge storage capacitors help maintain stability during pulsed operation.

Can the AFS4-02001835-25-10P-4 be used in frequency-agile radar systems, and what tuning range limitations exist due to internal compensation networks?: The device is optimized for fixed-center-frequency operation; attempting to tune beyond ±10% of 10 GHz shifts gain and impedance characteristics unpredictably. Internal bias stabilization circuits assume nominal operating points, and frequency hopping systems must allow sufficient dwell time for thermal and electrical settling. For agile radars, consider using multiple pre-characterized units or switching to tunable filter banks upstream.

How does the output compression behavior of the AFS4-02001835-25-10P-4 differ between CW and pulsed excitation, and what adjustments are needed for accurate modeling?: Under pulsed conditions, the AFS4-02001835-25-10P-4 reaches P1dB 1–2 dB lower than CW due to reduced thermal averaging. Compression slope remains consistent, but memory effects introduce slight hysteresis in gain recovery. Accurate modeling requires time-domain simulations with thermal lumped elements, rather than relying solely on CW S-parameters. Empirical characterization under actual pulse conditions is recommended for precision designs.

What are the implications of using the AFS4-02001835-25-10P-4 in a multi-channel MIMO array, and how does crosstalk or channel isolation affect beamforming performance?: In a four-element MIMO array, adjacent AFS4-02001835-25-10P-4 units exhibit less than -60 dB isolation when spaced by at least 1.5 wavelengths. Without proper shielding, mutual coupling can induce gain imbalance and phase error exceeding 2°, degrading beam steering accuracy. Isolation can be improved using absorptive materials or spatial separation, but adds complexity and weight—critical factors in airborne platforms.

How does the AFS4-02001835-25-10P-4 compare to newer GaN-based alternatives in terms of power-added efficiency and size constraints?: While GaN amplifiers offer 40–50% PAE at similar frequencies, the AFS4-02001835-25-10P-4’s 18% PAE is offset by its compact footprint and lower cost. For space-constrained or legacy-compatible designs, it remains viable where efficiency is secondary to integration density. However, in high-throughput satellite transponders, GaN solutions provide superior link margin despite larger size and higher thermal demands.

What documentation and reference designs are available for the AFS4-02001835-25-10P-4, and how reliable are application notes for predicting real-world performance?: L3 Narda-MITEQ provides reference schematics and EM simulations for the AFS4-02001835-25-10P-4, including evaluation boards with calibrated S-parameters. While these offer strong starting points, actual performance can vary due to board parasitics and assembly tolerances. Independent verification under target operating conditions is essential, especially for defense or medical applications where certification requires traceable test data.

Parts with Similar Specifications

The three parts on the right have similar specifications to L3 Narda-MITEQ AFS4-02001835-25-10P-4

Product Attribute
Part Number	AFS4-02001800-75-10P-4-GS-AM	AFS4-02001850-65-15P-4-S	AFS4-02001800-75-10P-4-GS-AM-M	AFS4-02001850-55-16P-4-S
Manufacturer	L3 Narda-MITEQ	L3 Narda-MITEQ	L3 Narda-MITEQ	L3 Narda-MITEQ
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Base Product Number	-	DAC34H84	MAX500	ADS62P42

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Customer Reviews

Evaluation: 10 Articles

Arch***ct

Jul 15, 2026

Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.
FPGA***lorer88

Jul 7, 2026

The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.
Nath***oleman

Jun 29, 2026

Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.
Emil***rperTech

Jun 23, 2026

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.
Liam***terTech

Jun 15, 2026

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.
Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.

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Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

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Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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