MC13820FCR2 - 800MHz-2.5GHz 18dB RF Amplifier IC | NXP
MPN： MC13820FCR2 ✗ 停產MC13820FCR2 概覽
An RF amplifier IC is a semiconductor device that boosts weak radio-frequency signals while adding as little noise and distortion as possible; it sits between the antenna (or front-end filter) and the downstream mixer, demodulator, or baseband section. Within the broader signal-chain taxonomy, the MC13820FCR2 belongs to the class of low-noise amplifiers (LNAs) and general-purpose gain blocks under the RF & Wireless family, ultimately a sub-category of integrated circuits.
Key features highlighted across NXP/Freescale documentation include 18 dB typical gain at 800 MHz, broadband operation extending through 2.5 GHz with reduced gain at the upper band edge, internal matching to 50 ohm on both RF ports, and a small 3 mm x 3 mm QFN-12 footprint with exposed thermal pad. The device includes a power-down bias mode controlled via the chip enable pin for time-division duplex systems and battery-powered portable equipment.
Architecturally, the MC13820FCR2 uses a BiCMOS silicon-germanium active-bias topology with on-die matching networks; this allows a single external supply and minimal external components. Operating from -40 C to +85 C, the part is qualified for commercial and industrial environments and is supplied on tape and reel for high-volume SMT assembly.
Typical applications include cellular handset receive front ends, 900 MHz/2.4 GHz ISM-band boosters, GPS L1 low-noise amplification, PCS/DCS repeaters, and base-station IF stages. The integrated bias and shutdown pin simplify power-management design in TDD and duty-cycled radios.
When designing with this device, place RF input/output traces as 50 ohm controlled-impedance lines and connect the exposed pad to a continuous ground pour with multiple thermal vias; input and output DC-blocking capacitors must be placed as close as possible to the RF pins to preserve the 2.5 GHz upper-band response. Decoupling must be tight, and supply routing should bypass the RF return path to avoid coupling into the bias network.
This page consolidates distributor stock, parametric drop-in equivalents, and design guidance not assembled in the original Freescale/NXP datasheet, helping RF engineers shorten sourcing and layout reviews.
直接替換替代品，適用於 MC13820FCR2 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC13820FCR2 （相同外形與佔位） — 差異在於 Frequency Range, Input/Output Impedance.
MC13821FCR2
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC13822FCR2
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
SKY65126-21
✅ 直接替換📋 參考替代品（不在目錄中）
MC13820FCR2 最大額定值與電氣特性
| 功能 | RF Amplifier IC / General-Purpose Gain Block |
| Frequency Range | 800 MHz to 2.5 GHz |
| Typical Gain | 18 dB (at 800 MHz) |
| 供應電壓 | 3 V (typical) |
| Input/Output Impedance | 50 ohm (internally matched) |
| Technology | BiCMOS SiGe |
| 封裝 | 12-QFN (3x3 mm) with exposed pad |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 C to +85 C |
| 腳位數 | 12 |
| Packaging | Tape & Reel (R2 suffix) |
| Target Applications | Cellular, ISM, PCS, GPS |
| Shutdown/Bias Mode | Yes (chip enable / power-down pin) |
MC13820FCR2 腳位配置
| 腳位 1 | RFIN — RF signal input (50 ohm, DC-blocked externally) |
| 腳位 2 | GND — Ground |
| 腳位 3 | VCC — Supply voltage (3 V typical) |
| 腳位 4 | PD — Power-down / bias enable control |
| 腳位 5 | GND — Ground |
| 腳位 6 | GND — Ground |
| 腳位 7 | RFOUT — RF signal output (50 ohm) |
| 腳位 8 | GND — Ground |
| 腳位 9 | NC — Not connected (per datasheet) |
| 腳位 10 | GND — Ground |
| 腳位 11 | NC — Not connected (per datasheet) |
| 腳位 12 | GND — Ground (ties to exposed pad) |
典型應用
MC13820FCR2 適用於 6 應用s: Cellular 800/900 MHz Receive Front End, GPS L1 Low-Noise Amplifier, 2.4 GHz ISM/Wi-Fi Booster Stage, PCS/DCS 1.8-1.9 GHz IF Amplifier, Test & Measurement Front-End Pre-Amp, Industrial 900 MHz Telemetry / SCADA Receiver.
Cellular 800/900 MHz Receive Front End
The MC13820FCR2's 18 dB gain at 800 MHz and 3 V single-supply BiCMOS design make it a strong fit for cellular 800/900 MHz receive LNAs in handsets and repeaters. Its 50 ohm internal matching eliminates external matching components on both RF ports, simplifying the front-end bill of materials. Compared with higher-voltage GaAs LNAs it draws less bias current and integrates cleanly with a 3 V PMU rail, while still delivering usable gain into the 2.5 GHz upper edge for multiband receivers.
推薦
GPS L1 Low-Noise Amplifier
With broadband coverage to 2.5 GHz the MC13820FCR2 falls within the GPS L1 band at 1.575 GHz, where its 18 dB gain can be tapped to improve cascaded noise figure of a GPS receiver front end. The exposed-pad QFN-12 package provides excellent RF grounding that preserves noise figure, while the integrated bias network keeps external component count low. Designers should add an output attenuator pad if 18 dB exceeds the receiver's required gain, and add a SAW filter downstream for out-of-band rejection.
推薦
2.4 GHz ISM/Wi-Fi Booster Stage
The MC13820FCR2 covers the 2.4 GHz ISM band at the upper end of its frequency range, making it usable as a pre-amp or IF booster in Wi-Fi, Bluetooth, and Zigbee front ends. Gain is reduced versus the 800 MHz peak so designers should size the cascaded gain budget accordingly. The 3 V single-supply and power-down pin simplify duty-cycled operation in battery-powered IoT radios, and the small 3x3 mm QFN-12 footprint is friendly to compact module designs.
推薦
PCS/DCS 1.8-1.9 GHz IF Amplifier
Inside PCS (1.85-1.9 GHz) and DCS (1.71-1.78 GHz) repeaters and picocells, the MC13820FCR2 functions as a general-purpose IF gain block between the duplexer and the demodulator. Its broadband matched 50 ohm ports allow it to be inserted directly into a 50 ohm microstrip trace with minimal external matching, and the small footprint simplifies placement on crowded IF signal-chain boards. The integrated power-down feature supports TDD half-duplex repeater architectures.
推薦
Test & Measurement Front-End Pre-Amp
The MC13820FCR2's broadband 800 MHz to 2.5 GHz coverage and flat-ish gain profile make it a useful bench pre-amplifier for spectrum analyzers, signal generators, and RF debug stations when an internal pre-amp is not available. Engineers can drop it onto an eval board between the DUT and the analyzer input to lift weak signals above the analyzer noise floor. The exposed-pad QFN package is straightforward to integrate onto a small eval PCB with SMA connectors for instrumentation use.
推薦
Industrial 900 MHz Telemetry / SCADA Receiver
Industrial 900 MHz telemetry, SCADA, and remote-metering receivers benefit from the MC13820FCR2's 18 dB low-voltage gain at 900 MHz and -40 C to +85 C industrial temperature range. Its BiCMOS bias tolerates noisy industrial supply rails better than some GaAs LNAs, and the small QFN-12 footprint simplifies placement inside sealed telemetry modules. The integrated power-down pin supports duty-cycled listen-mode receivers that meet battery-life targets in field-deployed assets.
推薦
推薦產品摘要
工程參考資料，適用於 MC13820FCR2 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC13821FCR2 | MC13822FCR2 | SKY65126-21 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Skyworks |
| Supply Voltage | 3 V | 3 V (same family) | 3 V (same family) | 5 V |
| Function | LNA / General-purpose RF amplifier | LNA / RF amplifier | LNA / RF amplifier | Power amplifier driver |
| Lifecycle Status | NRND (NXP) | NRND | NRND | Active (per Utmel) |
主要差異化特點
- Wideband 800 MHz to 2.5 GHz coverage in a 3x3 mm QFN-12 (對比SKY65126-21)
- Low-voltage 3 V single-supply BiCMOS bias (對比SKY65126-21 (5 V))
- Internally matched 50 ohm RF ports (對比Discrete transistor LNA designs)
設計說明
Place the RF input and output traces as 50 ohm controlled-impedance lines (microstrip or coplanar waveguide) and keep them as short as possible. The exposed pad must be soldered to a continuous ground pour with multiple thermal vias (8-12 vias recommended) to achieve the rated RF performance. Decoupling capacitors should be placed as close as possible to the VCC pin, using a 100 nF plus 10 pF parallel combination for wideband supply noise suppression across the 800 MHz to 2.5 GHz operating range.
Do not assume the gain is flat across the full band - the 18 dB figure is the 800 MHz typical, and gain rolls off toward 2.5 GHz. Engineers using the part for 2.4 GHz ISM/Wi-Fi booster stages should re-size the gain budget accordingly. Also avoid routing the DC bias line near the RF output trace, which can couple bias noise into the RF chain and degrade noise figure.
Keep the input DC-blocking capacitor within 1-2 mm of the RFIN pin and the output DC-blocking capacitor within 1-2 mm of the RFOUT pin. The power-down/bias-enable trace should be guarded by ground to prevent digital control noise from reaching the RF section. Estimated: with a 12-QFN 3x3 mm footprint and 50 ohm microstrip on a standard 0.8 mm FR-4 stackup, expect trace widths around 1.5 mm; final dimensions must be verified with the PCB vendor's stackup calculator.
合規資訊
RoHS/REACH compliance status not present in the verified web snippets for this NRNLifecycle part; NXP/Freescale legacy BiCMOS parts typically shipped lead-free but RoHS/REACH documentation should be requested from the authorized distributor at order entry.
