GP2SA+ - 2-Way MMIC Power Splitter 800-2100 MHz | Mini-Circuits
Référence : GP2SA+ ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.95 | $4,95 |
| 10 | $4.45 | $44,50 |
| 100 | $3.65 | $365,00 |
| 500 | $3.1 | $1 550,00 |
| 1 000 | $2.75 | $2 750,00 |
GP2SA+ Présentation
An RF power splitter (also called a power divider or hybrid combiner) is a passive RF component that splits an input signal into two or more equal-amplitude, equal-phase output signals (acting as a splitter), or conversely combines multiple input signals into a single output (acting as a combiner). In the RF signal chain hierarchy, the splitter sits between the transceiver/driver stage and the antenna or feed network; it belongs to the broader category of RF passive components alongside couplers, attenuators, and filters. The 2-way Wilkinson-style topology used in the GP2SA+ provides matched 50 ohm ports on every node and intrinsic isolation between output ports, making it ideal for cellular BTS, repeater, and distributed-antenna-system front-ends.
Key features include wide 800 to 2100 MHz operating bandwidth covering all major cellular sub-2.6 GHz bands, excellent amplitude unbalance of typically 0.02 dB (max 3 dB per data), and 20 dB minimum isolation with 26 dB typical return loss. The DC pass path (up to 370 mA) allows the splitter to feed DC bias to a downstream LNA or antenna-tuner without an external bias-T, simplifying PCB routing and bill of materials. GaAs MMIC construction provides repeatable RF performance from unit to unit across the full operating temperature range.
The GP2SA+ utilizes Mini-Circuits' GaAs MMIC process technology with on-chip thin-film resistors and a printed Wilkinson divider structure. Internal compensation networks and on-wafer laser-trimmed resistors achieve the tight amplitude and phase unbalance numbers without external tuning. The MMIC die is mounted in a 12-VQFN exposed-pad (DQ1225) package that minimizes bond-wire inductance and provides a low thermal resistance path to the host PCB ground plane.
Typical applications include GSM/CDMA/LTE/UMTS base-station transmit/receive signal splitting, in-building DAS (distributed antenna system) feeders, RFID reader signal distribution, and general-purpose 800 to 2100 MHz test-and-measurement signal routing. The wide bandwidth also suits cellular repeater, small-cell, and picocell radio head networks. The DC pass-through feature lets designers bias remote LNAs through the same RF line, eliminating separate bias networks.
When designing with this splitter, ensure the host PCB ground plane connects directly to the exposed pad with multiple thermal vias underneath to maintain low thermal resistance and stable RF grounding. The 50 ohm microstrip or coplanar-wave launch should be designed for the package land pattern given in the datasheet; even small impedance mismatches at the launch degrade the 26 dB return-loss number. When using the DC pass path, insert a suitable RF choke or bias network to prevent RF leakage into the DC supply rail.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB/thermal design notes not consolidated in the Mini-Circuits datasheet alone, giving RF engineers a single source for sourcing and second-source decisions.
Alternatives de remplacement direct pour GP2SA+ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec GP2SA+ (même facteur de forme et même empreinte) — différant par Frequency Range, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
GP2S+
✅ Remplacement direct✓ En stock
$3.42 / unité
Voir la fiche technique →GP2X+
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
GP2SA+ Spécifications (publiées par le fabricant)
| Fonction | 2-Way Power Splitter/Combiner |
| Technology | GaAs MMIC |
| Frequency Range | 800 MHz to 2100 MHz |
| Impedance | 50 ohm |
| Insertion Loss (typ) | 1.0 dB |
| Isolation (min) | 20 dB |
| Isolation (typ) | 22 dB |
| Amplitude Unbalance (typ) | 0.02 dB |
| Amplitude Unbalance (max) | 0.3 dB |
| Phase Unbalance (typ) | 0.4 deg |
| Return Loss (typ) | 26 dB |
| DC Pass Current (max) | 370 mA |
| Input Power (max) | 10 W |
| Number of Ways | 2 |
| Boîtier | 12-VQFN Exposed Pad (DQ1225 case style) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de GP2SA+
| Broche 1 | NC — Not connected (per datasheet) |
| Broche 2 | GND — Ground |
| Broche 3 | RF IN — RF input port (DC pass) |
| Broche 4 | GND — Ground |
| Broche 5 | NC — Not connected (per datasheet) |
| Broche 6 | RF OUT 1 — RF output port 1 (DC pass) |
| Broche 7 | GND — Ground |
| Broche 8 | NC — Not connected (per datasheet) |
| Broche 9 | RF OUT 2 — RF output port 2 (DC pass) |
| Broche 10 | GND — Ground |
| Broche 11 | NC — Not connected (per datasheet) |
| Broche 12 | NC — Not connected (per datasheet) |
Applications typiques
GP2SA+ convient pour 6 applications: LTE/UMTS Base-Station Transmit/Receive Splitting, In-Building DAS (Distributed Antenna System) Signal Distribution, Cellular Repeater and Small-Cell Signal Routing, RFID Reader Signal Distribution (UHF 868/915 MHz), Test & Measurement Signal Routing, LNA Bias Feed via DC-Pass Path.
LTE/UMTS Base-Station Transmit/Receive Splitting
The GP2SA+ suits 800-2100 MHz cellular BTS transmit and receive signal splitting thanks to its 1.0 dB typical insertion loss, 22 dB typical isolation, and 0.02 dB amplitude unbalance across the entire band. Placed between the radio unit and the antenna feed network or sector combiner, it distributes a single PA output to multiple antenna branches or combines two receive paths into one LNA input with minimal path loss. The 10 W power handling covers typical macro-cell downlink levels after external attenuation, and the 12-VQFN DQ1225 package fits standard BTS PCB real-estate. Unlike discrete-resistor Wilkinson splitters, the MMIC Wilkinson gives repeatable unbalance across production lots.
Recommandé
In-Building DAS (Distributed Antenna System) Signal Distribution
The GP2SA+ is well-matched to in-building DAS signal distribution where a single rooftop donor antenna is split across multiple indoor coverage zones in the 800-2100 MHz cellular band. Its 1.0 dB typical insertion loss preserves link-budget margin, while 20 dB minimum isolation prevents cross-talk between coverage zones. The 12-VQFN DQ1225 surface-mount package allows high-density splitter arrays on the head-end unit, and the 50 ohm matched ports simplify microstrip trace routing. The DC pass path (370 mA max) lets the same splitter feed DC bias to remote amplifier units without separate bias-T networks.
Recommandé
Cellular Repeater and Small-Cell Signal Routing
The GP2SA+ fits cellular repeater and small-cell radio head designs operating in 800-2100 MHz bands (LTE Bands 1, 3, 7, 8, 20, 28). Its 0.02 dB amplitude unbalance and 0.4 deg phase unbalance preserve EVM in MIMO and carrier-aggregation paths, critical for modern LTE/5G NR small-cell radios. The 10 W input power handling supports typical outdoor small-cell PA output levels, and the 12-VQFN DQ1225 package is small enough for pole-mount and street-cabinet enclosures. The 26 dB return loss keeps VSWR under 1.1:1 across the band, which minimizes reflection-driven gain ripple in the receiver chain.
Recommandé
RFID Reader Signal Distribution (UHF 868/915 MHz)
The GP2SA+ is ideal for UHF RFID reader signal distribution in the 868 MHz (ETSI) and 915 MHz (FCC) ISM bands, both inside its 800-2100 MHz operating window. Its 1.0 dB insertion loss and 22 dB isolation let a single reader drive 2-4 antenna multiplexed ports with minimal read-range degradation. The 12-VQFN DQ1225 package enables dense port arrays in multi-antenna portals and conveyor-tunnel reader enclosures. The 370 mA DC pass capability supports biasing of antenna-side LNAs or circulators. Better than discrete resistive dividers, the MMIC Wilkinson topology keeps loss constant across readers, simplifying read-zone calibration.
Recommandé
Test & Measurement Signal Routing
The GP2SA+ is a strong fit for test-and-measurement signal routing in 800-2100 MHz automated test equipment, where its repeatable 0.02 dB amplitude unbalance and 0.4 deg phase unbalance minimize measurement-to-measurement variation. Used as a 2-way combiner/splitter in vector network analyzer calibration chains or signal-generator fan-outs, it provides 26 dB typical return loss that maintains measurement integrity. The 12-VQFN DQ1225 SMT package allows integration into compact PXI/PXIe RF switch and attenuator modules. The 10 W power handling accommodates high-power EMC and RF conformance test signals.
Recommandé
LNA Bias Feed via DC-Pass Path
The GP2SA+'s 370 mA DC pass-through capability eliminates the need for an external bias-T when feeding an LNA mounted near an antenna, simplifying PCB layout. Place the GP2SA+ between the radio's RF port and the LNA's RF+DC port: the splitter's DC pass carries the bias voltage to the LNA while the RF signal flows through with 1.0 dB typical insertion loss. This reduces BOM count by one bias-T per LNA channel and minimizes connector count on weatherized outdoor radio units. The 12-VQFN DQ1225 package's exposed pad keeps the MMIC cool under continuous DC current draw up to the 370 mA limit.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour GP2SA+ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | GP2S+ | GP2X+ |
|---|---|---|---|
| Brand | Mini-Circuits | Mini-Circuits | Mini-Circuits |
| Package | 12-VQFN Exposed Pad (DQ1225) | 12-VQFN Exposed Pad (DQ1225) - same | 12-VQFN Exposed Pad (DQ1225) - same |
| Frequency Range | 800-2100 MHz | 800-2100 MHz - same | 2300-2700 MHz (higher band) |
| DC Pass | Yes (370 mA max) | No (DC blocked internally) | Yes (DC pass) |
Principaux différenciateurs
- DC pass-through capability in the same 12-VQFN DQ1225 footprint (vs GP2S+)
- Lower-band cellular coverage versus higher-band sibling (vs GP2X+)
- Tight amplitude unbalance across production lots (vs Discrete-resistor Wilkinson splitters)
Notes de conception
Connect the GP2SA+ exposed pad directly to the host PCB ground plane using at least 4-6 thermal vias (0.3 mm drill, 0.5 mm pitch) directly under the pad. The DQ1225 case style relies on the exposed paddle as the primary thermal path; without proper via stitching, junction temperature rises under continuous DC pass current and may exceed the maximum ratings. Estimated: at 370 mA DC pass with internal dissipation of ~0.3 W, expect a junction-to-ambient temperature rise of 25-40 C on a standard 4-layer 1 oz PCB.
Design the 50 ohm microstrip or coplanar-waveguide launch to match the package land pattern in the Mini-Circuits GP2SA+ datasheet. Even small impedance discontinuities at the launch degrade the 26 dB typical return-loss specification. Keep the RF traces as short as possible, maintain continuous ground beneath the traces, and avoid routing any DC bias lines across the RF trace area without proper shielding. The exposed pad ground should be a single uninterrupted pour from the pad to the launch ground.
Do not exceed the 370 mA DC pass current limit through the GP2SA+ RF ports; exceeding this can damage the internal MMIC bias network. When biasing a downstream LNA, place an RF choke or bias-T to prevent RF leakage into the DC supply rail. Also avoid using GP2S+ (DC-blocking variant) as a substitute if your design requires DC bias feed to the LNA - the DC blocks will prevent bias from reaching the active device, causing complete LNA failure despite identical RF footprint.
Place the GP2SA+ as close as practical to the RF source or receiver to minimize trace losses and to maximize isolation benefit. For DAS or BTS applications where multiple splitters are cascaded, maintain at least 5 mm spacing between adjacent splitters to prevent coupling through near-field paths. Use a guarded via fence around each splitter's exposed pad area if cascading 4 or more splitters in a tight array.
Informations de conformité
RoHS compliant per Mini-Circuits product page. AEC-Q100 not applicable - this is an RF passive component, not an automotive-qualified IC. Halogen-free and conflict-minerals status not explicitly stated in provided data - left as 'unknown'.
