MMA20312BT1 - 2-Stage InGaP HBT Linear Amplifier, 1.8-2.2 GHz | NXP
MPN: MMA20312BT1 ✓ فعالMMA20312BT1 جائزہ
An RF linear amplifier is a power-amplifier class that simultaneously delivers usable gain across a defined frequency band while preserving modulation fidelity (low ACLR and EVM) for complex digital waveforms such as LTE, UMTS, TD-SCDMA and PCS. As a member of the broader RF power amplifier (RF PA) family, which sits between driver amplifiers and final-stage PAs in the transmitter chain, the InGaP HBT process used here provides high power-added efficiency (PAE) and excellent thermal robustness versus older GaAs MESFET designs.
Key features of the MMA20312BT1 include 27.2 dB gain across 1800-2200 MHz, +30.5 dBm P1dB output, single 5V rail with internal matching, integrated active bias network, and an exposed-pad QFN-12 (3x3 mm) package that lowers thermal resistance (theta_JC) to roughly 10 C/W and simplifies PCB layout. The 2-stage cascade topology minimizes external component count while providing enough gain to be driven directly from a transceiver output.
The architecture is a 2-stage Class AB InGaP HBT cascade with internal 50-ohm matching networks on input and output. Each HBT stage is biased by an on-chip active bias circuit that compensates for temperature and process variations, holding quiescent current stable over -40 C to +85 C. The exposed-pad QFN package provides a low-inductance ground and a low-thermal-impedance path to the PCB copper pour.
Typical applications include driver amplifiers in macro-cell wireless base stations, output stages in femtocells, indoor repeaters and small-cell remote radio heads, and final-stage PAs in 2.1 GHz / TD-SCDMA / UMTS customer-premises equipment. The +30.5 dBm output makes it well suited where the next stage is a higher-power LDMOS final PA or where a small cell is built without a final PA at all.
When designing with this part, ensure the 5V supply is well decoupled and that the exposed pad has a continuous ground pour with multiple thermal vias; current draw is approximately 70 mA. Match the input/output traces to 50 ohm controlled-impedance PCB material and follow the reference layout in the manufacturer evaluation board to avoid gain ripple outside the 1.8-2.2 GHz band.
This page synthesizes distributor pricing, drop-in alternatives drawn from the NXP MMA20312 product family, and practical RF design notes that complement (but do not replace) the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل MMA20312BT1 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں MMA20312BT1 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Frequency Range, RoHS Status, Small-Signal Gain, Supply Voltage, Topology.
MMA20312BVT1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMZ09312BT1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA20312BT1G
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA20312BT3
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA25312BT1
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →MMA20312BT1 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Product Type | RF Linear Power Amplifier |
| Technology | InGaP HBT (Heterojunction Bipolar Transistor) |
| ٹوپولوجی | 2-stage Class AB cascade |
| Frequency Range | 1800 MHz to 2200 MHz |
| Small-Signal Gain | 27.2 dB |
| Saturated Output Power (Psat) | 30.5 dBm (~1.1 W) |
| سپلائی وولٹیج | 5 V |
| Supply Current (Idq) | 70 mA typical |
| پیکیج / کیس | 12-QFN (3x3 mm) with Exposed Pad |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RF Input/Output Match | Internal 50 ohm |
| Supported RF Standards | LTE, PCS, TD-SCDMA, UMTS |
| RoHS اسٹیٹس | Compliant (per NXP product page) |
| Lead-Free | Yes |
| Packaging | Tape & Reel |
MMA20312BT1 پن کنفیگریشن
| پن 1 | RF_IN — RF input (internally matched to 50 ohm) |
| پن 2 | GND — Ground |
| پن 3 | GND — Ground |
| پن 4 | VCC — +5 V supply |
| پن 5 | GND — Ground |
| پن 6 | GND — Ground |
| پن 7 | RF_OUT — RF output (internally matched to 50 ohm) |
| پن 8 | GND — Ground |
| پن 9 | GND — Ground |
| پن 10 | GND — Ground |
| پن 11 | GND — Ground |
| پن 12 | VCC — +5 V supply (bias network) |
محفوظ آپریٹنگ ایریا - HBT Amplifier Output
عام استعمالات
MMA20312BT1 کے لیے موزوں ہے 7 ایپلیکیشنs: Macro-cell Wireless Base Station Driver Amplifier, Femtocell and Small-Cell Final PA, Indoor Wireless Repeater Output Amplifier, TD-SCDMA 2.0-2.2 GHz Customer-Premises Equipment, PCS / UMTS Band 1 Driver Stage, LTE Small-Cell / Pico-Cell Transmit Chain, Test & Measurement RF Power Stage.
Macro-cell Wireless Base Station Driver Amplifier
The MMA20312BT1's 27.2 dB gain and +30.5 dBm saturated output make it well suited as the driver stage feeding a higher-power LDMOS final PA in 1.8-2.2 GHz macro base-station transmitters, including UMTS Band 1, LTE Band 1, and TD-SCDMA. Placed between the transceiver/up-converter output and the final-stage LDMOS PA input, the InGaP HBT cascade delivers sufficient gain to compensate for filter and trace losses between stages. Unlike a final-stage LDMOS device, the HBT amplifier adds predictable gain flatness across the band and operates from a single 5 V rail, simplifying the bias tree. Linearity under WCDMA and LTE OFDMA is sufficient for driver-amplifier duty; the final PA handles the heavy lifting for ACLR and EVM.
تجویز کردہ
Femtocell and Small-Cell Final PA
Indoor femtocells, picocells, and small-cell remote radio heads typically need only a few hundred milliwatts of RF output, which fits comfortably within the MMA20312BT1's +30.5 dBm (1.1 W) Psat rating. Using the part as the final amplifier eliminates the cost, board area, and bias complexity of a higher-power LDMOS final stage, while still meeting UMTS/LTE conducted-output requirements for sub-100 mW radiated power after antenna losses. The internal 50-ohm matching removes all inter-stage matching networks, allowing a very compact 2-layer or 4-layer PCB implementation that fits inside small-cell enclosures. Single 5 V supply and 70 mA quiescent current keep power consumption low enough for PoE-powered small cells.
تجویز کردہ
Indoor Wireless Repeater Output Amplifier
Building-top and indoor wireless repeaters for UMTS/LTE re-broadcast benefit from the MMA20312BT1's 27.2 dB gain, which is enough to compensate for duplexer and filter losses between the donor antenna feed and the indoor re-radiator. The 1.8-2.2 GHz band covers UMTS Band 1, LTE Band 1, and TD-SCDMA 2010-2025 MHz downlink, all common indoor-coverage targets. Internal 50-ohm matching simplifies the duplexer-to-PA interface, and the exposed-pad QFN-12 package keeps thermal resistance low enough to sustain +30.5 dBm into a 50-ohm load on a modest copper pour. The single 5 V rail and on-chip active bias reduce component count versus discrete GaAs MESFET designs.
تجویز کردہ
TD-SCDMA 2.0-2.2 GHz Customer-Premises Equipment
TD-SCDMA operates in the 2010-2025 MHz band, which sits well within the MMA20312BT1's 1.8-2.2 GHz operating range. The part's 27.2 dB gain is enough to drive a final radiating element directly in customer-premises CPE such as indoor TD-SCDMA routers, residential femtocells, and small-office transceivers. The Class AB bias keeps average current draw proportional to RF output, which simplifies thermal management in compact plastic enclosures where heat-sinking options are limited. The exposed-pad QFN-12 package allows direct PCB copper-pour heat extraction without an external heatsink.
تجویز کردہ
PCS / UMTS Band 1 Driver Stage
In PCS (1850-1910 MHz uplink, 1930-1990 MHz downlink) and UMTS Band 1 (1920-1980 MHz UL, 2110-2170 MHz DL) transmitter chains, the MMA20312BT1 provides a high-linearity, moderate-power driver stage between the transceiver output and the final PA. Its 27.2 dB gain lets the design use a low-output transceiver DAC without sacrificing drive level to the LDMOS final, while the +30.5 dBm Psat provides headroom margin under WCDMA and LTE modulation peaks. Internal 50-ohm matching keeps the inter-stage network to a single bandpass filter, which simplifies the overall BOM. Quiescent current of 70 mA at 5 V yields roughly 350 mW DC consumption, well within the thermal budget of a QFN-12 footprint on a 2 oz copper pour.
تجویز کردہ
LTE Small-Cell / Pico-Cell Transmit Chain
Pico-cell and enterprise small-cell LTE base stations typically transmit at 0.1-1 W average RF power per antenna, which aligns with the MMA20312BT1's +30.5 dBm Psat rating. Using the part either as a final PA or as a high-gain driver lets designers standardize a single amplifier footprint across multiple small-cell SKUs. The InGaP HBT process delivers the linearity (ACLR and EVM) required for LTE OFDMA modulation across the 1.8-2.2 GHz band. Single 5 V supply and a 12-QFN 3x3 mm footprint ease integration into compact small-cell radio units that may aggregate multiple bands on a shared baseband. Active on-chip bias keeps quiescent current stable over -40 C to +85 C ambient, important for outdoor-mounted small cells.
تجویز کردہ
Test & Measurement RF Power Stage
Bench-top signal sources, RF test sets, and laboratory amplifiers for 2 GHz cellular-band compliance testing benefit from the MMA20312BT1's predictable +30.5 dBm Psat and 27.2 dB small-signal gain. Internal 50-ohm matching allows the part to be used as a stand-alone bench amplifier block, fed from a laboratory signal generator and driving a 50-ohm load or DUT directly. The exposed-pad QFN-12 package with a continuous ground pour and multiple thermal vias is straightforward to integrate into a small aluminum-housed evaluation module. The single 5 V rail simplifies bench-top power supply design relative to GaAs MESFET amplifiers that require negative bias.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا MMA20312BT1 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | MMA20312BVT1 | MMZ09312BT1 | MMA20312BT1G | MMA25312BT1 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 12-QFN-3x3 (Exposed Pad) | 12-QFN-3x3 (Exposed Pad) - same | 12-QFN-3x3 (Exposed Pad) - same | 12-QFN-3x3 (Exposed Pad) - same | 12-QFN-3x3 (Exposed Pad) - same |
| Frequency Range | 1.8-2.2 GHz | 1.8-2.2 GHz | 0.4-2.4 GHz | 1.8-2.2 GHz | 2.3-2.7 GHz |
| Small-Signal Gain | 27.2 dB | 27.2 dB | 19 dB | 27.2 dB | 27 dB |
| Saturated Output Power | +30.5 dBm | +30.5 dBm | +21 dBm P1dB | +30.5 dBm | +30 dBm |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Technology | InGaP HBT | InGaP HBT | InGaP HBT | InGaP HBT | InGaP HBT |
اہم امتیازی خصوصیات
- Highest gain in the 1.8-2.2 GHz NXP QFN-12 family (بمقابلہMMZ09312BT1)
- Higher saturated output power than the wideband sibling (بمقابلہMMZ09312BT1)
- Pin-compatible with broader-band NXP same-family amplifiers (بمقابلہMMA25312BT1)
- Drop-in packaging code variants for high-volume assembly (بمقابلہMMA20312BVT1)
ڈیزائن نوٹس
Use a 4-layer PCB stack-up with 50-ohm microstrip on the top layer and a continuous ground plane on layer 2 (below 0.2 mm dielectric). Place a 100 nF decoupling capacitor within 0.5 mm of the VCC pins, with a 10 uF tantalum or polymer bulk capacitor on the same supply trace. Stitch the ground pour around the QFN-12 exposed pad with at least 9 thermal vias (ideally 16 in a 4x4 grid) to keep theta_JB below 10 C/W. Avoid routing digital or DC-bias traces directly under the RF input/output microstrip lines to minimize coupling into the high-gain 27 dB cascade.
At +30.5 dBm (1.1 W) saturated output, roughly 50% DC-to-RF efficiency means the part dissipates about 1 W of heat into the PCB copper pour. With the QFN-12 (3x3 mm) exposed pad, junction-to-board thermal resistance is approximately 10 C/W - so a 1 W dissipation yields a 10 C rise above the PCB copper. Keep the PCB copper pour under the exposed pad at least 1 square inch (roughly 25x25 mm) of continuous 2 oz copper to keep junction temperature below +125 C at +85 C ambient. Mounting the part on the underside of the PCB (away from heatsinks) is acceptable if the PCB is aluminum-backed or has an internal copper coin.
Do not bypass the exposed pad with solder mask - the pad must be soldered directly to the PCB ground pour with no thermal vias inside the solder-mask-defined opening. Do not exceed +6 V on VCC - the InGaP HBT process is not rated above 6 V and will degrade the MTTF and gain flatness. Do not omit input/output series DC-blocking capacitors if driving from a non-AC-coupled source - the internal matching network assumes DC-blocked RF paths. Always include a small ferrite bead or inductor on the VCC supply trace to prevent 1.8-2.2 GHz feedback into the supply rail, which can cause gain ripple or instability at high output power.
At 27.2 dB small-signal gain, the MMA20312BT1 is highly sensitive to supply-rail noise and ground-bounce. Place a ferrite bead (approximately 600 ohm at 100 MHz) in series with the VCC trace, followed by a 10 uF and 100 nF decoupling pair within 1 mm of the VCC pin. Avoid sharing ground return paths between the RF stages and any digital control circuitry on the same PCB - route the RF ground pour back to a single point near the part's exposed pad to prevent digital switching noise from modulating the RF carrier. For LTE/UMTS linearity-critical applications, the on-chip active bias network already compensates for temperature drift, so additional bias-stabilization components are typically unnecessary.
تعمیل کی معلومات
RoHS and REACH compliant per NXP product page. Not AEC-Q100 qualified (RF amplifier for cellular infrastructure, not automotive). Lead-free reflow profile per JEDEC J-STD-020. Halogen-free status not explicitly published for this part - default to 'unknown' until confirmed on NXP product page.
