MMA25312BT1 - 2.3-2.7 GHz 26 dB InGaP HBT Driver Amplifier | NXP
部品番号: MMA25312BT1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.32 | $53.20 |
| 100 | $4.7 | $470.00 |
| 500 | $4.15 | $2,075.00 |
| 1,000 | $3.65 | $3,650.00 |
MMA25312BT1 概要
An InGaP HBT driver amplifier is a specialized RF power transistor in which Indium-Gallium-Phosphide provides both high electron mobility and a wide bandgap, enabling high breakdown voltage together with low-noise, high-linearity operation up to multi-gigahertz frequencies. Within the larger RF amplifier taxonomy (driver amplifier → power amplifier → RF frontend IC → RF transceiver), this device sits between the transceiver/up-converter and the final PA stage, boosting intermediate power levels while keeping the distortion budget intact for spectrally efficient OFDM/QAM waveforms.
Headline electrical parameters include 26 dB linear gain flatness across the operating band, P1dB output of approximately 31 dBm (~1.25 W), bias current around 124 mA from a 3-5 V supply, and a noise figure of 3.8 dB at 2.5 GHz. The two-stage InGaP HBT topology provides high efficiency at backed-off output levels characteristic of linear modulation formats. Internal matching reduces external component count, and the 12-QFN exposed pad provides a low-inductance thermal path that is essential for dissipation at multi-hundred-mW output power levels.
The architecture uses NXP's mature GaAs-based InGaP HBT process, optimized for high linearity at the 2.4 GHz Wi-Fi/WiMAX band. Two cascaded gain stages share biasing networks designed for thermal stability across the -40 °C to +85 °C operating range. Quiescent biasing can be set with a simple external reference, and the broadband match allows a single part to cover the entire 2.3-2.7 GHz spectrum without retuning, simplifying multi-band radio design.
Typical applications include driver stages for 2.3-2.7 GHz WiMAX and Wi-Fi power amplifiers, cellular base-station driver gain blocks, fixed-wireless broadband terminal equipment, and mesh-network CPE radios. In each case the part replaces a discrete two-transistor cascade with a single matched MMIC, saving PCB area and design time while providing repeatable RF performance across production lots.
When designing in this part, ensure the exposed pad is soldered to a continuous ground/thermal copper pour of at least 25 mm²; inadequate thermal management will shift gain and bias point as the die heats up. Output matching is generally provided internally, but a simple external harmonic-rejection low-pass network on the output is recommended to meet regulatory spurious emissions on transmit.
This page synthesizes datasheet parameters, drop-in alternative recommendations from cross-reference databases, and practical design notes that complement the NXP datasheet.
ドロップイン代替品: MMA25312BT1 — 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: MMA25312BT1 （同一形状・フットプリント） — 相違点: Frequency Range, RoHS Status, Small-Signal Gain, Supply Voltage, Topology.
クイック比較ツール — 並列比較する代替部品を選択:
MMA25312BT1G
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MMA25312BTR1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MMA20312BT1
✅ ドロップイン✓ 在庫あり
$4.85 / 個
データシートを見る →MMA25312BT1 最大定格＆電気的特性
| Technology | InGaP HBT (Heterojunction Bipolar Transistor) |
| トポロジー | 2-stage linear driver amplifier |
| Frequency Range | 2300 MHz to 2700 MHz |
| Small-Signal Gain | 26 dB |
| Saturated Output Power | 31 dBm (typ) |
| Noise Figure | 3.8 dB at 2.5 GHz |
| 電源電圧 | 3 V to 5 V |
| 電源電流 | 124 mA (typ) |
| Test Frequency | 2.5 GHz |
| 動作温度 | -40 °C to +85 °C |
| パッケージ | 12-VFQFN Exposed Pad (QFN-12 EP) |
| 実装タイプ | Surface Mount |
| RF Type | WiMAX, WLAN |
| RoHS ステータス | Compliant |
MMA25312BT1 ピン構成
| ピン 1 | RFIN — RF input (matched) |
| ピン 2 | GND — Ground |
| ピン 3 | GND — Ground |
| ピン 4 | GND — Ground |
| ピン 5 | GND — Ground |
| ピン 6 | GND — Ground |
| ピン 7 | VCC1 — Stage 1 supply voltage |
| ピン 8 | GND — Ground |
| ピン 9 | GND — Ground |
| ピン 10 | RFOUT — RF output (matched) |
| ピン 11 | VCC2 — Stage 2 supply voltage |
| ピン 12 | GND — Ground |
| ピン EP | Exposed Pad — Thermal/ground pad - solder to PCB |
主な用途
MMA25312BT1 の用途: 6 件s: 2.4 GHz Wi-Fi (802.11g/n) Driver Amplifier, WiMAX (802.16e) Driver Stage, Broadband Wireless Mesh Network Radios, Cellular Base-Station Driver Gain Block, Industrial 2.4 GHz RF Telemetry Driver, Public-Safety / Utility Wireless Networks.
2.4 GHz Wi-Fi (802.11g/n) Driver Amplifier
The MMA25312BT1's 26 dB small-signal gain across 2300-2700 MHz and 31 dBm saturated output make it well-suited as the intermediate driver between the Wi-Fi transceiver/up-converter and the final PA in 802.11g/n access points and client devices. Per the NXP datasheet, the linearity back-off at 10-12 dB OBO still meets 64-QAM EVM/ACPR masks, while the 2-stage InGaP HBT topology preserves thermal stability across production lots. Engineers typically place it after the front-end module and before the high-power PA stage, with a simple output LC harmonic-rejection filter.
おすすめ
WiMAX (802.16e) Driver Stage
WiMAX 802.16e infrastructure at 2.3-2.7 GHz requires a high-linearity driver to support OFDMA and 64-QAM modulation while feeding the final PA. The MMA25312BT1's InGaP HBT process delivers the linearity needed for the tight EVM/ACPR masks of mobile WiMAX waveforms, while the 26 dB gain lifts the transceiver output to a level adequate for the downstream PA. NXP's datasheet shows ACPR improvements of multiple dB versus standard silicon drivers at equivalent output power, with bias simple enough to support a single 5 V regulated rail.
おすすめ
Broadband Wireless Mesh Network Radios
Mesh CPE and outdoor units (2.3-2.7 GHz) need wideband, repeatable RF gain blocks that survive elevated ambient temperatures. The MMA25312BT1's 26 dB gain covers the entire 400 MHz mesh band without retuning, and the QFN-12 exposed pad keeps junction temperatures in spec when mounted on the recommended 25 mm² copper pour. Designers report that the part's matched input/output reduces RF calibration steps in mesh-node production, while internal bias tolerances compensate for the wide thermal variation seen in pole-mount and rooftop deployments.
おすすめ
Cellular Base-Station Driver Gain Block
Small-cell and picocell base stations operating in 2300-2400 MHz (Band 40/n40) benefit from a high-linearity intermediate amplifier between the transceiver and the high-power GaN/Si LDMOS PA. The MMA25312BT1's 31 dBm saturated output plus 26 dB gain provides a comfortable drive margin for typical small-cell output targets of 24-27 dBm without pushing the downstream PA into compression. Engineers usually interface the MMA25312BT1 to the transceiver with a 50 ohm microstrip trace and to the PA through an inter-stage attenuator to set the optimal back-off point.
おすすめ
Industrial 2.4 GHz RF Telemetry Driver
Industrial telemetry links in the 2.4 GHz ISM band (sensor backhaul, factory automation, mining) need rugged RF drivers that survive −40 °C to +85 °C ambient swings. The MMA25312BT1's industrial temperature rating and InGaP HBT robustness suit this environment, and its surface-mount 12-QFN package simplifies high-vibration assembly versus ceramic transistor alternatives. Compared to a discrete 2-transistor cascade, the integrated MMIC reduces part count by ~8 components, lowering assembly cost and improving MTBF in 24/7 deployed telemetry networks.
おすすめ
Public-Safety / Utility Wireless Networks
Fixed-wireless broadband for utilities, public-safety backhaul, and SCADA networks often operates in the 2300-2700 MHz band with high reliability and long deployment lifetimes. The MMA25312BT1's broadband match, stable gain across the full operating range, and industrial-grade thermal design make it a useful linear driver for the customer-premises equipment (CPE) side. NXP specifies OFDM performance suitable for utility-grade network error-vector budgets, and the 12-QFN is straightforward to conformal-coat for outdoor PCB enclosures.
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: MMA25312BT1 — 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 | MMA25312BT1G | MMA25312BTR1 | MMA20312BT1 |
|---|---|---|---|---|
| Package | 12-VFQFN Exposed Pad (QFN-12 EP) | 12-VFQFN Exposed Pad (QFN-12 EP) - same | 12-VFQFN Exposed Pad (QFN-12 EP) - same | 12-VFQFN Exposed Pad (QFN-12 EP) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Frequency Range | 2300-2700 MHz | 2300-2700 MHz | 2300-2700 MHz | 1800-2300 MHz |
| Small-Signal Gain | 26 dB | 26 dB | 26 dB | 28 dB |
| Saturated Output Power | 31 dBm | 31 dBm | 31 dBm | 28 dBm |
| Supply Voltage | 3 V to 5 V | 3 V to 5 V | 3 V to 5 V | 3 V to 5 V |
| Supply Current | 124 mA | 124 mA | 124 mA | 110 mA |
| Noise Figure at 2.5 GHz | 3.8 dB | 3.8 dB | 3.8 dB | 3.5 dB |
| Technology | InGaP HBT | InGaP HBT | InGaP HBT | InGaP HBT |
主な差別化要因
- Integrated 2-stage InGaP HBT with internal matching in 12-QFN （vs MMA20312BT1)
- Green/RoHS-compliant tape-and-reel variant available （vs MMA25312BT1G)
- Higher-volume 5 000-piece reel option （vs MMA25312BTR1)
設計ノート
The MMA25312BT1 must have its exposed pad soldered to a continuous ground/thermal copper pour of at least 25 mm² on the top layer of the PCB. Per NXP datasheet thermal data, inadequate thermal sinking will shift the bias point and degrade gain at elevated ambient temperatures, which is especially problematic in outdoor CPE deployments. Use a via-array (at least 9 thermal vias in a 3×3 grid, 0.3 mm drill) under the EP to sink heat into inner ground planes.
Place the RF input/output traces as 50 Ω microstrip lines on the top layer, with reference ground plane continuous under the entire RF path. Keep DC bias traces (VCC1, VCC2) routed orthogonally to RF traces and decoupled with 100 nF and 1 µF capacitors placed as close as possible to the device pins. Maintain a ground keep-out region around the EP to prevent solder wicking into the RF ground path during reflow.
Do not operate the MMA25312BT1 outside the 3-5 V supply range - voltages above 5 V can damage the InGaP HBT junctions, and voltages below 3 V collapse gain. Do not bypass the external bias resistor network expecting the device to self-bias from the supply; the datasheet shows that missing the reference resistor leads to incorrect quiescent current and reduced linearity. For multiband radios covering 2300-2700 MHz plus other bands, validate harmonic performance with an output low-pass filter to meet FCC/ETSI spurious emission masks.
コンプライアンス情報
RoHS compliance per NXP product page lead-free finish indication. Not AEC-Q100 qualified - this part is intended for infrastructure/consumer RF, not automotive. Green/RoHS variant is the MMA25312BT1G suffix.
