GP2S1A+ - 2-Way MMIC 0.5-2.5 GHz Splitter/Combiner | Mini-Circuits
部品番号: GP2S1A+ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.45 | $54.50 |
| 100 | $4.75 | $475.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.7 | $3,700.00 |
GP2S1A+ 概要
A power splitter is a passive RF network that equally divides an input signal into two output paths (or, used reciprocally, combines two signals into one) while maintaining a 50Ω match at every port. Splitters and combiners are foundational building blocks in RF and microwave systems - they sit inside every phased-array antenna feed network, every dual-path receiver, every in-building DAS (distributed antenna system), and every test-and-measurement setup that needs to monitor a live signal without interrupting it. Mini-Circuits' MMIC (Monolithic Microwave IC) implementation integrates the splitter function on a single GaAs die, replacing bulky discrete Wilkinson designs with a tiny, repeatable, surface-mount part that drops straight onto an SMT line.
Key features of the GP2S1A+ include a wide 500-2500 MHz bandwidth covering all major cellular (LTE/5G sub-6 GHz mid-band), Wi-Fi (2.4 GHz), ISM, and GNSS feed-network use cases; excellent amplitude balance (typical 0.02 dB, max 0.4 dB on the full band) and phase balance (typical 0.4 deg, max 4 deg) that preserve signal integrity when the two outputs feed matched-path circuitry; high isolation (17 dB minimum, 22 dB typical) that prevents the split outputs from coupling back into each other; and excellent return loss (22 dB typical) that keeps the splitter essentially invisible in a 50Ω system. The device also passes DC through the center conductor, allowing remote powering of downstream LNAs, filters, or antennas without extra bias tees.
The GP2S1A+ uses a GaAs MMIC die (Mini-Circuits die reference DQ1264) wire-bonded into a 12-pin VQFN package. The exposed bottom pad is the RF/DC ground reference and must be soldered to the PCB ground plane with multiple thermal vias for repeatable RF performance, low thermal resistance, and minimum parasitic inductance. DC-pass capability is implemented with on-chip inductors and a center-tap bias path that accepts the bias feed from any output port and routes it to the other output ports - this allows the same part to be used as either a splitter or a combiner with no topology change.
Typical applications for the GP2S1A+ include LTE/5G small-cell and femtocell feeder networks, 2.4 GHz Wi-Fi (802.11b/g/n/ax) MIMO feed networks, in-building DAS signal distribution, GNSS (GPS/BeiDou/Galileo/GLONASS) antenna distribution for test and measurement, general-purpose RF signal monitoring/probing in lab instrumentation, and any 50Ω system that needs an ultra-compact, surface-mountable 2-way split. When designing with the GP2S1A+, pay close attention to PCB layout: route the RF traces as 50Ω controlled-impedance lines, stitch the ground paddle with multiple vias, and keep the DC-pass bias trace away from sensitive RF nodes to preserve isolation. Distributor pricing is around $4-6 per unit in small quantities (DigiKey / Mouser) as of 2026-10-13.
This page synthesizes distributor pricing and stock data, surface-mount footprint notes, drop-in same-package alternatives, and practical RF layout guidance - content that goes beyond the manufacturer datasheet to speed up your design-in decision.
ドロップイン代替品: GP2S1A+ — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: GP2S1A+ （同一形状・フットプリント） — 相違点: Function, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
GP2S1+
✅ ドロップイン✓ 在庫あり
$0.95 / 個
データシートを見る →GP2S1+
✅ ドロップイン✓ 在庫あり
$0.95 / 個
データシートを見る →EP2C+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SBTC-2-10+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
GP2S1A+ 仕様（メーカー公開）
| 機能 | 2-way splitter / combiner (reciprocal) |
| Technology | GaAs MMIC |
| Frequency Range (Low) | 500 MHz |
| Frequency Range (High) | 2500 MHz |
| Impedance | 50 Ω |
| Insertion Loss (Typical) | 1.0 dB |
| Insertion Loss (Maximum) | 1.50 dB |
| Isolation (Minimum) | 17 dB |
| Isolation (Typical) | 22 dB |
| Return Loss (Typical) | 22 dB |
| Amplitude Unbalance (Typical) | 0.02 dB |
| Phase Unbalance (Typical) | 0.4 deg |
| Imbalance (Max, amplitude/phase) | 0.4 dB / 4 deg |
| Input Power Handling | 10 W maximum |
| DC Pass Current | 370 mA maximum |
| Number of Ports | 3 (1 input, 2 outputs) |
| パッケージ | 12-VQFN Exposed Pad (Case DQ1264) |
| 実装タイプ | Surface Mount |
| 動作温度 | -40C to +85C |
| RoHS ステータス | Compliant |
GP2S1A+ ピン構成
| ピン 1 | GND — Ground (must be connected to exposed pad and PCB ground) |
| ピン 2 | GND — Ground |
| ピン 3 | GND — Ground |
| ピン 4 | J1 (Input/Common) — RF common port - signal input when used as splitter, combined output when used as combiner; DC pass port |
| ピン 5 | GND — Ground |
| ピン 6 | GND — Ground |
| ピン 7 | S1 (Output 1) — RF output port 1 - DC pass capable |
| ピン 8 | GND — Ground |
| ピン 9 | GND — Ground |
| ピン 10 | S2 (Output 2) — RF output port 2 - DC pass capable |
| ピン 11 | GND — Ground |
| ピン 12 | GND — Ground |
電力・熱特性
| 動作温度 | -40C to +85C |
メーカーが公開している GP2S1A+ の電力入力および熱パラメータ。
主な用途
GP2S1A+ の用途: 6 件s: 5G Small-Cell Feeder Network, 2.4 GHz Wi-Fi MIMO Feed, In-Building DAS Distribution, GNSS Antenna Distribution for Test Equipment, RF Signal Monitoring / Lab Probe, LNA Bias-Tee Replacement.
5G Small-Cell Feeder Network
The Mini-Circuits GP2S1A+ is an excellent fit for 4G/5G small-cell and femtocell feed networks operating in the 500-2500 MHz band (including mid-band LTE and sub-6 GHz 5G n41/n77/n78). The 1.0 dB typical insertion loss and 22 dB isolation preserve EVM and throughput budgets, while the 0.02 dB amplitude unbalance and 0.4 deg phase unbalance ensure matched power division between the two antenna branches. Used as a 2:1 splitter feeding a dual-polarized or dual-sector antenna, the part adds minimal noise and supports DC pass so a remote LNA can be biased through the same trace. Placed between the radio transceiver and the antenna feed, it is essentially transparent in a well-laid-out 50Ω microstrip environment. Compared with a discrete Wilkinson, the GP2S1A+ shrinks the BOM to one SMT part that drops onto a standard VQFN-12 land pattern.
おすすめ
2.4 GHz Wi-Fi MIMO Feed
For 802.11 b/g/n/ax Wi-Fi MIMO routers and access points operating at 2.4 GHz, the GP2S1A+ delivers a 2-way split with 1.0 dB typical loss and 0.4 deg phase unbalance - directly usable to feed a 2-antenna 2x2 MIMO chain from a single radio chain. The 22 dB port-to-port isolation prevents the two branches from coupling back into each other and corrupting channel state information. With 370 mA DC pass, the part also supports bias through the radio RF line for active switching or front-end modules. As a feed-network component inside a Wi-Fi 6/6E AP, it maintains the 50Ω match and low return loss needed to pass radio regulatory emissions. Solderable to a standard 4-layer FR-4 board with controlled-impedance microstrip, it is a high-volume SMT-friendly replacement for discrete resistive or printed Wilkinson splitters.
おすすめ
In-Building DAS Distribution
Distributed Antenna Systems (DAS) inside office buildings, stadiums, and transit hubs use the GP2S1A+ as a 2-way splitter to fan out a single cellular or public-safety radio feed to two remote antenna heads. The 500-2500 MHz band covers virtually every cellular band deployed indoors today (LTE 1/2/3/4/7/12/13, CBRS, public-safety 700/800 MHz). DC pass at 370 mA lets the same cable carry bias to remote amplifiers or active antennas, eliminating extra wiring. Typical 1.0 dB loss and 22 dB isolation maintain low system noise figure and high isolation between branches in dense antenna deployments. Used as an inline tap or feed split inside a head-end rack, it occupies only a 12-VQFN footprint and is rated for the full industrial temperature range of -40C to +85C.
おすすめ
GNSS Antenna Distribution for Test Equipment
Production test racks for GNSS receivers (GPS L1/L2, BeiDou, Galileo, GLONASS) need to distribute a single rooftop GNSS antenna signal to multiple test ports without interfering with live reception. The GP2S1A+ serves as a 2-way splitter in this test harness with 1.0 dB typical loss and 0.02 dB amplitude balance, keeping the carrier-to-noise ratio nearly intact across both outputs. Tight amplitude and phase balance ensure both ports see the same signal so that golden-unit calibration is consistent. Operating temperature range of -40C to +85C covers lab and outdoor test bay environments. Inside a test fixture, the part's 12-VQFN form factor consumes minimal board space and is easy to integrate with the surrounding shielded RF enclosure.
おすすめ
RF Signal Monitoring / Lab Probe
Test engineers frequently need to tap a live 50Ω RF line without interrupting it. The GP2S1A+ provides a 2-way tap with 1.0 dB insertion loss to the through path and ~22 dB coupling to the monitor port, making it usable as a low-loss observation tap in lab and production test setups up to 2.5 GHz. Excellent return loss (22 dB) keeps the tap invisible to the device under test, and tight amplitude/phase balance maintains measurement accuracy across the monitored chain. The 12-VQFN SMT package mounts directly to the test board, supporting high-density multi-port test fixtures. DC pass at 370 mA also permits powering remote circuitry through the same test leads where bias tees cannot be added.
おすすめ
LNA Bias-Tee Replacement
Where a remote Low-Noise Amplifier (LNA) needs bias injection from the host board, designers historically used a separate bias-tee inductor-capacitor network. The GP2S1A+ integrates DC pass directly into the 2-way split function, allowing the host board to inject 370 mA of DC directly onto the RF trace through any output port, eliminating the discrete bias tee entirely. This is particularly valuable for active GNSS antennas, tower-mounted amplifiers, and any weatherproof remote RF head where minimizing the BOM and parts count directly improves long-term reliability. With 1.0 dB typical insertion loss and 22 dB isolation, the splitter/power-combiner still meets the noise-figure and isolation requirements of the receiver chain, and the 12-VQFN package is rated -40C to +85C for outdoor deployments.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: GP2S1A+ — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | GP2S1+ | GP2S1+ | EP2C+ | SBTC-2-10+ |
|---|---|---|---|---|---|
| Brand | Mini-Circuits | Mini-Circuits | Mini-Circuits | Mini-Circuits | Mini-Circuits |
| Package | 12-VQFN Exposed Pad (Case DQ1264) | 12-VQFN Exposed Pad (Case DQ1264) - same | 12-VQFN Exposed Pad (Case DQ1264) - same | Mini-Circuits FP-2 case | Mini-Circuits coaxial case |
| Frequency Range | 500 MHz to 2500 MHz | 500 MHz to 2500 MHz | 500 MHz to 2500 MHz | 5 MHz to 1000 MHz (lower band) | 10 MHz to 1000 MHz (wider lower band) |
| Insertion Loss (Typical) | 1.0 dB | 1.0 dB | 1.0 dB | 0.7 dB | 0.8 dB |
| Isolation (Typical) | 22 dB | 22 dB | 22 dB | 20 dB | 20 dB |
| Amplitude Unbalance (Typical) | 0.02 dB | 0.02 dB | 0.02 dB | 0.2 dB | 0.3 dB |
| DC Pass | Yes (370 mA max) | Yes (370 mA max) | Yes (370 mA max) | Yes | Yes |
| Input Power Handling | 10 W | 10 W | 10 W | 2 W | 1 W |
主な差別化要因
- Only GP2-series variant with full DC pass at this band （vs GP2S1+ (no DC pass))
- Surface-mount 12-VQFN replaces coaxial splitters （vs Mini-Circuits coaxial-case splitters)
- Tight 0.02 dB typical amplitude balance preserves beamforming accuracy （vs Resistive or lossy hybrid splitters)
設計ノート
For rated isolation and return loss, follow the Mini-Circuits EVKit reference layout: route each of the three RF traces (J1, S1, S2) as 50Ω controlled-impedance microstrip with constant trace width, and stitch the exposed bottom pad with at least 9 thermal vias (3x3 array on a 0.5 mm pitch) tied to the inner ground plane. Asymmetric trace lengths or missing vias will degrade isolation significantly below the datasheet's 22 dB typical figure.
Estimated: at the maximum 10 W input-power rating, about 1.0 W of heat is generated in the die and dissipated through the exposed pad. With the EVKit's 9-via array and 1 square inch of 1 oz copper pour, expected theta_JA is in the 30-40 C/W range - well within the -40C to +85C operating temperature rating. For high-altitude or sealed-enclosure deployments, consider adding additional copper area to keep the die temperature below 100C.
Do NOT mix DC bias and RF signal routing on the same trace without ensuring your downstream block is DC-rated. The 370 mA DC pass capability means that whatever is on the S1 or S2 side sees whatever DC you apply at J1 - shorting the bias can damage the part or downstream LNAs. Always include DC blocking caps if the next stage is not designed to accept the bias voltage, and add a series ferrite or inductor to isolate the RF return if needed.
コンプライアンス情報
RoHS compliant and Pb-free per Mini-Circuits product page. Halogen-free status and REACH SVHC declaration should be confirmed via Mini-Circuits environmental compliance letter. Not AEC-Q100 qualified - this part is intended for commercial/industrial RF infrastructure, not automotive.
