ADMV4821B - 24-29.5GHz Dual-Pol Beamformer | Analog Devices
MPN： ADMV4821B ✓ 啟用中ADMV4821B 概覽
A beamformer is a key component in phased-array systems that electronically steers the antenna beam by adjusting the phase and amplitude of signals across multiple antenna elements. The ADMV4821B belongs to the class of RF beamforming ICs, which are essential in modern 5G NR and radar systems. By integrating multiple channels and dual polarization, it reduces the component count and PCB area compared to discrete implementations, enabling compact and cost-effective antenna modules.
Key features include a wide RF frequency range of 24 GHz to 29.5 GHz, 16 TX and 16 RX channels, dual polarization support, and matched 50-ohm single-ended interfaces. The device is recommended for new designs, indicating active lifecycle status. It is packaged in a compact BCCZ package, suitable for surface-mount assembly, and is designed to meet the stringent performance requirements of 5G infrastructure.
Technically, the ADMV4821B integrates phase shifters, gain amplifiers, and T/R switches on a single die, providing precise beam control. The dual-polarization capability allows simultaneous transmission and reception on both horizontal and vertical polarizations, doubling the data throughput in MIMO systems. The device is controlled via a serial interface, enabling fast beam steering and calibration.
Typical applications include 5G NR base stations, phased-array antennas, satellite communications, and radar systems. Its wide frequency coverage and dual-polarization support make it ideal for massive MIMO and beamforming networks. The device's high integration reduces system complexity and power consumption, making it suitable for dense antenna arrays.
When designing with the ADMV4821B, careful attention must be paid to thermal management and RF layout. The device's thermal resistance values are simulated based on JEDEC specifications (JESD51-12), so proper PCB design with adequate ground vias and heat sinking is critical. Additionally, the RF inputs and outputs are single-ended 50-ohm, requiring proper impedance matching to minimize reflections.
直接替換替代品，適用於 ADMV4821B — 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。
ADMV4821
✅ 直接替換聯絡詢價
查看資料表 →ADMV4821BCCZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADMV4828
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADMV4821B 規格
| RF Frequency Range | 24 GHz to 29.5 GHz |
| 5G NR Bands | n257, n258, n261 |
| Number of TX Channels | 16 |
| Number of RX Channels | 16 |
| Polarization | Horizontal and Vertical |
| RF Interface | Matched 50-ohm single-ended |
| 封裝 | BCCZ |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
ADMV4821B bccz 腳位配置指南
ADMV4821B（bccz 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ADMV4821B.
請參閱 資料表 以查看完整腳位配置。
典型應用
ADMV4821B 適用於 6 應用s: 5G NR Base Stations, Phased-Array Antennas, Satellite Communications, Radar Systems, Point-to-Point Communications, Test and Measurement.
5G NR Base Stations
The ADMV4821B is ideal for 5G NR base stations operating in the n257, n258, and n261 bands. Its 24-29.5 GHz frequency range and 16 TX/RX channels enable massive MIMO beamforming, providing high data throughput and spectral efficiency. The dual-polarization support doubles capacity by transmitting and receiving on both polarizations simultaneously. The integrated beamformer reduces component count and PCB area, simplifying the design of compact antenna modules. With matched 50-ohm single-ended RF ports, it interfaces directly with antenna elements, minimizing signal loss. The device's high integration and performance make it a key enabler for 5G infrastructure.
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Phased-Array Antennas
The ADMV4821B is designed for phased-array antenna systems, offering 16 TX and 16 RX channels with precise phase and amplitude control. Its dual-polarization capability allows independent beam steering on horizontal and vertical polarizations, enhancing system flexibility. The wide frequency range covers multiple 5G bands, making it suitable for reconfigurable antenna systems. The integrated beamformer reduces the need for external phase shifters and amplifiers, lowering system cost and complexity. The device's matched 50-ohm single-ended interfaces simplify connection to antenna elements, ensuring optimal power transfer. This makes the ADMV4821B an excellent choice for advanced phased-array applications.
推薦
Satellite Communications
The ADMV4821B supports satellite communication systems operating in the 24-29.5 GHz frequency range, which includes Ka-band uplink frequencies. Its 16 TX and 16 RX channels enable high-throughput beamforming for satellite ground terminals. The dual-polarization support increases spectral efficiency by using both polarizations for data transmission. The device's high integration reduces the size and weight of the RF front-end, which is critical for space-constrained applications. The matched 50-ohm single-ended interfaces simplify integration with antennas and other RF components. The ADMV4821B's performance and reliability make it suitable for demanding satellite communication environments.
推薦
Radar Systems
The ADMV4821B can be used in radar systems operating in the 24-29.5 GHz band, such as automotive radar and surveillance radar. Its 16 TX and 16 RX channels allow for high-resolution beamforming, improving target detection and tracking. The dual-polarization capability enhances radar performance by providing additional information about the target's polarization signature. The wide frequency range supports multiple radar applications, from short-range to long-range. The integrated beamformer reduces system complexity and power consumption, making it suitable for portable and mobile radar systems. The device's matched 50-ohm single-ended interfaces ensure easy integration with radar antennas and front-end components.
推薦
Point-to-Point Communications
The ADMV4821B is suitable for point-to-point communication links in the 24-29.5 GHz band, providing high-capacity backhaul for 5G networks. Its 16 TX and 16 RX channels enable advanced beamforming to maintain a reliable link over long distances. The dual-polarization support doubles the data rate by using both polarizations for transmission. The device's high integration reduces the size and cost of the RF unit, making it ideal for small cell backhaul and fixed wireless access. The matched 50-ohm single-ended interfaces simplify connection to antennas and waveguides. The ADMV4821B's performance ensures high throughput and low latency for demanding communication applications.
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Test and Measurement
The ADMV4821B can be used in test and measurement equipment for 5G and radar systems, providing a flexible platform for beamforming characterization. Its 16 TX and 16 RX channels allow for comprehensive testing of phased-array antennas and beamforming algorithms. The dual-polarization support enables testing of polarization diversity schemes. The wide frequency range covers multiple 5G bands, making it a versatile tool for R&D and production testing. The device's integrated beamformer simplifies the test setup by reducing the number of external components. The matched 50-ohm single-ended interfaces ensure accurate signal measurement. The ADMV4821B is an essential component for validating 5G and radar systems.
推薦
推薦產品摘要
工程參考資料，適用於 ADMV4821B — 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 | ADMV4821 | ADMV4821BCCZ | ADMV4828 |
|---|---|---|---|---|
| Package | BCCZ | BCCZ | BCCZ | BCCZ |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
主要差異化特點
- Dual-polarization support (對比ADMV4828)
- Wide frequency range covering n257, n258, n261 (對比ADMV4828)
- 16 TX and 16 RX channels (對比ADMV4828)
設計說明
The ADMV4821B's thermal resistance values are simulated based on JEDEC specifications (JESD51-12). Proper thermal management is critical; ensure adequate PCB copper area and thermal vias under the exposed pad. For high-power operation, consider a heatsink or forced air cooling. Refer to the datasheet for specific thermal resistance values.
For optimal RF performance, maintain 50-ohm impedance on all RF traces. Use controlled impedance PCB materials and minimize trace lengths. Place decoupling capacitors close to the power pins. Follow the layout guidelines in the ADMV4821 datasheet to avoid signal integrity issues.
Ensure the RF inputs and outputs are properly matched to 50 ohms to avoid reflections. Do not exceed the maximum supply voltage or operating temperature. Verify the control interface timing and voltage levels as specified in the datasheet. Incorrect configuration can lead to beamforming errors.
合規資訊
RoHS compliance is assumed based on Analog Devices standard practice, but not explicitly stated in the verified data. Other compliance information is not available.
