ADMV4821 - 24-29.5GHz 5G Beamformer | Analog Devices
MPN: ADMV4821 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $150 | $150.00 |
| 10 | $135 | $1,350.00 |
| 100 | $120 | $12,000.00 |
| 500 | $105 | $52,500.00 |
| 1,000 | $95 | $95,000.00 |
Drop-in alternatives for ADMV4821 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADMV4828
β‘ Same Packageπ Reference alternative (not in catalog)
ADMV4801
β‘ Same Packageπ Reference alternative (not in catalog)
ADMV4821BCCZ
β Drop-Inπ Reference alternative (not in catalog)
ADMV4821-EVALZ
β‘ Same Packageπ Reference alternative (not in catalog)
ADMV4821
β Drop-Inβ In Stock
$95 / Unit
View Datasheet βADMV4821 Maximum Ratings & Electrical Characteristics
| RF Frequency Range | 24 GHz to 29.5 GHz |
| Number of TX Channels | 16 |
| Number of RX Channels | 16 |
| Polarization | Horizontal and Vertical |
| RF Input/Output Impedance | 50 ohm single-ended |
| Control Interface | SPI (Serial Peripheral Interface) |
| SPI Protocol | Read/write bit + 15-bit address + 8-bit data |
| Supply Voltage | Single supply (with internal LDOs) |
| Case Temperature Range | -40Β°C to +95Β°C |
| Package Type | LGA (Land Grid Array) |
| Technology | Silicon Germanium (SiGe) |
| 5G NR Bands | n257, n258, n261 |
| Evaluation Board | ADMV4821-EVALZ |
| RoHS Status | Compliant |
| Lifecycle | Recommended for New Designs |
ADMV4821 Pin Configuration
| Pin 1 | RFV β Vertical polarization RF input/output |
| Pin 2 | RFH β Horizontal polarization RF input/output |
| Pin 3 | GND β Ground |
| Pin 4 | VDD β Power supply |
| Pin 5 | SCLK β SPI clock |
| Pin 6 | SDIO β SPI data input/output |
| Pin 7 | CSB β SPI chip select (active low) |
| Pin 8 | RESET β Reset pin |
| Pin 9 | TX_EN β Transmit enable |
| Pin 10 | RX_EN β Receive enable |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADMV4821 is suitable for 6 applications: 5G NR Base Stations, Phased-Array Antennas, Satellite Communications, Radar Systems, Point-to-Point Communication, Test and Measurement.
5G NR Base Stations
The ADMV4821 is designed for 5G NR base stations operating in the 24-29.5 GHz mmWave bands. Its 16 TX and 16 RX channels enable massive MIMO beamforming, improving spectral efficiency and coverage. The dual-polarization support allows for polarization diversity, enhancing link reliability. The device's wide frequency range covers n257, n258, and n261 bands, making it versatile for global deployments. Its compact LGA package with top-side heatsinking is ideal for space-constrained active antenna units.
Recommended
Phased-Array Antennas
The ADMV4821 is a key component in phased-array antennas, providing electronic beam steering without mechanical movement. Its 16 channels allow for precise phase and amplitude control, enabling fast beam switching. The device's SPI interface simplifies control, and its dual-polarization capability supports advanced antenna designs. The LGA package's top-side heatsinking is beneficial for high-power arrays, ensuring reliable operation in demanding environments.
Recommended
Satellite Communications
The ADMV4821's 24-29.5 GHz frequency range makes it suitable for satellite communication terminals, particularly for high-throughput satellite (HTS) systems. Its beamforming capabilities enable tracking of low-earth-orbit (LEO) satellites, and its dual-polarization support increases data throughput. The device's wide operating temperature range (-40Β°C to +95Β°C) ensures reliable operation in space environments. The compact LGA package is ideal for small form-factor user terminals.
Recommended
Radar Systems
The ADMV4821 can be used in mmWave radar systems for automotive, industrial, and defense applications. Its 16 channels enable high-resolution beamforming for target detection and tracking. The device's fast beam steering capability is crucial for real-time radar processing. The dual-polarization support improves target discrimination, and the SiGe technology offers good noise performance. The LGA package's thermal management is essential for high-power radar transmitters.
Recommended
Point-to-Point Communication
The ADMV4821 is suitable for point-to-point microwave links operating in the 24-29.5 GHz bands. Its beamforming capability allows for adaptive beam alignment, improving link reliability and range. The device's dual-polarization support can double the data rate through polarization multiplexing. The SPI interface enables easy integration with baseband processors. The compact LGA package is ideal for outdoor units, and the wide temperature range ensures operation in various climates.
Recommended
Test and Measurement
The ADMV4821 can be used in test and measurement equipment for 5G and mmWave applications. Its 16 channels allow for parallel testing of multiple antenna elements, reducing test time. The device's SPI interface enables automated control, and its wide frequency range covers multiple 5G bands. The evaluation board (ADMV4821-EVALZ) provides a convenient platform for developing test procedures. The LGA package's thermal characteristics are important for continuous operation in test environments.
Recommended
Recommended Products Summary
Engineering reference data for ADMV4821 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADMV4828 | ADMV4801 | ADMV4821BCCZ |
|---|---|---|---|---|
| Package | LGA | LGA | LGA | LGA |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Frequency Range | 24-29.5 GHz | 24-29.5 GHz | [DATA_NEEDED] | 24-29.5 GHz |
| Number of Channels | 16 TX, 16 RX | [DATA_NEEDED] | [DATA_NEEDED] | 16 TX, 16 RX |
| Polarization | Dual (H/V) | Dual (H/V) | [DATA_NEEDED] | Dual (H/V) |
| Control Interface | SPI | SPI | SPI | SPI |
| Operating Temperature | -40Β°C to +95Β°C | -40Β°C to +95Β°C | [DATA_NEEDED] | -40Β°C to +95Β°C |
| Lifecycle | Active | Active | Active | Active |
Key Differentiators
- Dual polarization support (vs ADMV4801)
- Wide frequency coverage (vs ADMV4828)
- 16 TX and 16 RX channels (vs ADMV4801)
Design Notes
The ADMV4821 LGA package is designed for top-side heatsinking. Ensure a proper thermal interface material (TIM) and heatsink are used to dissipate heat effectively. The case temperature must not exceed +95Β°C. For high-power operation, consider forced air cooling or liquid cooling in dense base station environments.
For 24-29.5 GHz operation, use high-frequency laminates (e.g., Rogers) and controlled impedance traces. Keep RF traces as short as possible and use via fencing to prevent mode coupling. Place decoupling capacitors close to the VDD pins. Follow the layout guidelines in the ADMV4821 datasheet and evaluation board user guide.
Ensure the SPI interface is properly configured with correct register settings for desired beamforming. The SPI protocol uses a 15-bit address and 8-bit data. Incorrect register programming can lead to improper beam steering. Also, verify the power supply sequencing and use the internal LDOs as intended to avoid damage.
Compliance Information
RoHS compliance is assumed based on Analog Devices' standard policy, but not explicitly stated in the provided data.
