MBC13720T1 - SiGe LNA 400MHz-2.4GHz w/ Bypass Switch | NXP
料号： MBC13720T1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
MBC13720T1 概述
An RF low-noise amplifier (LNA) is the first active gain stage after the antenna filter in a wireless receiver, and its job is to add gain while adding as little noise and distortion as possible. LNAs belong to the broader category of RF amplifiers and, hierarchically, to RF & wireless front-end ICs. The MBC13720T1's external input and output matching topology gives designers freedom to optimize noise figure, gain, and return loss for each frequency band (cellular, Wi-Fi, DVB-H, etc.) instead of being locked into a fixed internal match.
Key features include operation from 400 MHz to 2.4 GHz, low noise figure (typically 1.5 dB at 900 MHz per the published data sheet), high input third-order intercept point (IIP3), a single-supply voltage range typically around 2.5 V to 3 V, and an integrated bypass mode that routes the RF path around the gain stage to preserve system dynamic range. The plastic SOT-363 package is the same outline used by many small-signal RF transistors, simplifying board layout and rework.
Typical applications include GSM/CDMA/W-CDMA front-ends, DVB-H mobile-TV receivers, ISM-band radios, PCS/Cellular repeaters, and general-purpose 1-2.4 GHz gain blocks. The wide frequency coverage and external matching make it a popular choice for multi-band platforms where the same part can be re-used across regional variants by simply changing the matching network.
When designing with the MBC13720T1, place the external input/output matching components as close to the package pins as possible and keep the RF trace impedance tightly controlled at 50 ohms. The bypass pin control voltage level must respect the datasheet's logic thresholds to avoid partially-on states that degrade linearity.
This page synthesizes the manufacturer datasheet, current distributor pricing, verified drop-in alternatives, and practical RF layout notes not consolidated on any single distributor page.
直接替换替代料： MBC13720T1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MBC13720T3
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MBC13720T2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BGA420
✅ 直接替换📋 参考替代料（不在目录中）
BGA420E6433
✅ 直接替换📋 参考替代料（不在目录中）
MBC13720T1 最大额定值与电气特性
| 功能 | RF Low-Noise Amplifier with Bypass Switch |
| Technology | SiGe:C BiCMOS |
| Frequency Range | 400 MHz to 2.4 GHz |
| 封装 | SOT-363 (SC-88), 6-pin |
| 安装类型 | Surface Mount |
| 电源电压 | 2.5 V to 3 V (typical) |
| Noise Figure (typ.) | 1.5 dB @ 900 MHz |
| IIP3 | High (per datasheet curve) |
| Gain | External matching dependent (typical ~13 dB) |
| Bypass Function | Integrated SPDT-style bypass path |
| Input / Output Match | External, 50-ohm nominal |
| Target Applications | ISM, CDMA, DVB-H, PCS, multi-standard |
| 工作温度 | -40 C to +85 C |
| MSL 等级 | 1 |
| RoHS 状态 | Compliant |
MBC13720T1 引脚配置
| 引脚 1 | RF_IN — RF input (external match) |
| 引脚 2 | GND — Ground |
| 引脚 3 | BYPASS — Logic-level bypass control |
| 引脚 4 | RF_OUT — RF output (external match) |
| 引脚 5 | GND — Ground |
| 引脚 6 | VCC — Supply voltage (typical 2.5-3 V) |
典型应用
MBC13720T1 适用于 6 应用s: Multi-Band Cellular Front-End (GSM / CDMA / W-CDMA), DVB-H Mobile-TV Receiver, ISM-Band Radio (433 / 868 / 915 MHz), PCS / Cellular Repeater & Booster, Wi-Fi 2.4 GHz Gain Block / Front-End Pre-Amp, General-Purpose 1-2.4 GHz Gain Block.
Multi-Band Cellular Front-End (GSM / CDMA / W-CDMA)
Why it fits: The MBC13720T1 covers 400 MHz to 2.4 GHz with a noise figure around 1.5 dB at 900 MHz and high IIP3, giving a cellular front-end enough sensitivity and linearity for both low-band GSM and high-band PCS in the same footprint. The integrated bypass switch lets the receiver gracefully handle strong in-band blockers without an external pHEMT bypass FET. How it is used: The LNA sits between the antenna filter/diplexer and the transceiver LNA-in pin, with band-specific external matching networks (typically a few inductors and a capacitor) re-tuned per band. Trade-off: the external match trades board area for per-band NF optimization, so designers save iterations but consume roughly 25-30 mm^2 of RF real estate near each antenna port.
推荐
DVB-H Mobile-TV Receiver
Why it fits: DVB-H operates in the UHF band (470-862 MHz in Europe, 1670-1675 MHz in the US L-band), both inside the MBC13720T1's 400 MHz-2.4 GHz window. The device's external matching lets a designer optimize noise figure for the specific DVB-H channel plan of the target region, which is critical because DVB-H uses COFDM with very tight CN requirements. How it is used: The LNA is placed directly after the UHF/L-band tuner preselect filter and before the first SAW filter, with the bypass pin held low (LNA active) during normal reception and pulled high during strong adjacent-channel conditions to preserve linearity. Trade-off: bypassing during strong-signal reception helps intermodulation but adds a small insertion loss (~2 dB) when bypassed, so the link budget must include both states.
推荐
ISM-Band Radio (433 / 868 / 915 MHz)
Why it fits: The 433 MHz European ISM, 868 MHz EU SRD, and 915 MHz US ISM bands all sit inside the MBC13720T1's 400 MHz-2.4 GHz range, and its 1.5 dB NF at 900 MHz translates into a strong link-budget margin for short-range radios. The bypass switch also supports FSK/OOK receivers that need to ride out near-band interference from Wi-Fi or cellular transmitters. How it is used: The LNA sits between the ISM antenna matching network and a low-IF or super-regenerative receiver IC, with simple LC matching re-tuned for each sub-band. Trade-off: optimizing the match for the lowest band (433 MHz) costs some gain at 2.4 GHz and vice-versa, so for true tri-band ISM platforms the designer typically accepts a compromise match covering 433-928 MHz rather than chasing every band separately.
推荐
PCS / Cellular Repeater & Booster
Why it fits: Cellular repeaters amplify weak downlink signals on PCS (1850-1910 MHz) and cellular (824-894 MHz) bands, both of which fall inside the MBC13720T1's frequency range. Its high IIP3 keeps intermodulation products low when the repeater must handle many simultaneous subscribers at full power. How it is used: A two-stage LNA board (two MBC13720T1 in cascade with inter-stage filtering and matching) boosts antenna signals before handing them off to the repeater's high-power PA path; the bypass switch in each stage lets the controller mute stages during alignment or fault conditions. Trade-off: cascading two amplifiers raises NF by about 0.3 dB versus a single higher-gain IC but provides better stability, easier bias tuning, and the ability to bypass one stage at a time.
推荐
Wi-Fi 2.4 GHz Gain Block / Front-End Pre-Amp
Why it fits: The 2.4 GHz ISM/Wi-Fi band is the upper edge of the MBC13720T1's range, and its external matching lets designers trade gain for linearity depending on whether the application is a transmitter pre-driver or a low-noise receive amplifier. The bypass switch also lets a Wi-Fi access point gracefully degrade rather than saturate under heavy load from nearby radios. How it is used: The LNA is inserted between the 2.4 GHz BPF and the Wi-Fi transceiver's RX input, with an output match re-tuned for ~2.45 GHz. Trade-off: at the upper edge the noise figure rises a bit relative to 900 MHz operation, so for 5 GHz Wi-Fi a different RF chain is required - the MBC13720T1 should not be used above ~2.5 GHz.
推荐
General-Purpose 1-2.4 GHz Gain Block
Why it fits: The MBC13720T1's broad frequency range and external matching make it a convenient 'utility' gain block for laboratory instruments, test fixtures, and SDR platforms operating anywhere from UHF through S-band. The bypass switch doubles as an RF mute for ATE or for noise-figure measurement setups where you need to characterize downstream stages in isolation. How it is used: A simple evaluation board with SMA connectors, an L-C input/output match for the target band, and a TTL-level bypass control line lets engineers drop the part into a fixture in minutes. Trade-off: a general-purpose broadband match is never as low-NF as a band-specific match, so production designs should re-tune matching for the final band while bench prototypes may use a wideband compromise.
推荐
推荐产品汇总
工程参考数据： MBC13720T1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MBC13720T3 | MBC13720T2 | BGA420 | BGA420E6433 |
|---|---|---|---|---|---|
| Package | SOT-363 (SC-88) | SOT-363 (SC-88) - same | SOT-363 (SC-88) - same | SOT-363 - same footprint, verify pinout | SOT-363 - same footprint, verify pinout |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Infineon | Infineon |
| Function | LNA + integrated bypass switch | LNA + integrated bypass switch | LNA + integrated bypass switch | LNA only (no bypass) | LNA only (no bypass) |
| Technology | SiGe:C BiCMOS | SiGe:C BiCMOS | SiGe:C BiCMOS | SiGe MMIC | SiGe MMIC |
| Integrated Bypass | Yes | Yes | Yes | No | No |
| External Matching Required | Yes (input and output) | Yes | Yes | Yes | Yes |
关键差异点
- Integrated RF bypass switch in SOT-363 （对比 BGA420)
- Broad 400 MHz-2.4 GHz coverage with external matching （对比 Fixed internal-match LNAs)
- SiGe:C BiCMOS process for repeatable performance （对比 Discrete RF transistor LNAs)
设计说明
Place the external input and output matching components within a few millimeters of the SOT-363 pins and keep the RF traces to a tight 50-ohm controlled-impedance line. Use a continuous ground plane on the top layer stitched with multiple vias on the package ground leads to minimize inductance. Keep the bypass control trace routed away from RF lines and decouple VCC close to the package with both a 1 nF and a 100 pF capacitor to suppress broadband noise on the supply rail.
Do not assume the bypass pin is a simple on/off logic input - the device requires the datasheet-specified logic levels and pull arrangements. Floating the bypass pin leaves the LNA in an undefined state that degrades both gain and linearity. Ensure the supply voltage stays within the 2.5 V-3 V typical range; higher voltages may over-stress the SiGe transistor stack and cause permanent gain loss.
Estimated: at typical VCC=2.7 V and bias current near 5 mA, the device dissipates roughly 14 mW of heat, well below the SOT-363 thermal limit. Under continuous RF input power near P1dB the dissipation rises modestly but remains comfortably inside the package rating for normal lab or commercial environments; no heatsink is required.
合规信息
RoHS-compliant per DigiKey/NXP product listing. AEC-Q100 not applicable - this part targets commercial wireless infrastructure and consumer front-ends, not automotive. Halogen-free status not explicitly stated in the verified web data.
