Analog Devices

ADMV4821 - 24-29.5GHz 5G Beamformer | Analog Devices

Name: ADMV4821
Brand: Analog Devices
Price: 90 USD
Availability: InStock

MPN: ADMV4821 ✓ Active

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Single supply with internal LDO regulators Vdss -40°C to +95°C Package 24 GHz to 29.5 GHz Speed

From $90 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

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	$90	$90,000.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for ADMV4821 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

ADMV4828

⚡ Same Package

📦 LGA

Similar 24-29.5 GHz dual polarization beamformer, but may have different channel count or pinout

📋 Reference alternative (not in catalog)

ADMV4801

⚡ Same Package

📦 LGA

24-29.5 GHz beamformer, but may have different channel count or polarization options

📋 Reference alternative (not in catalog)

ADMV4821BCCZ

✅ Drop-In

📦 LGA

Same die and package, different ordering code

📋 Reference alternative (not in catalog)

ADMV4821-EVALZ

⚡ Same Package

📦 LGA

Evaluation board version, not for production

📋 Reference alternative (not in catalog)

ADMV4821

✅ Drop-In

Analog Devices

📦 LGA

24 GHz to 29.5 GHz · n257, n258, n261 · 16 · 16 · Horizontal and Vertical · Matched 50 ohm single-ended · SPI (read/write bit, 15-bit address, 8-bit data) · -40°C to +95°C

✓ In Stock

$90 / Unit

View Datasheet →

ADMV4821 Maximum Ratings & Electrical Characteristics

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 Input/Output	Matched 50 ohm single-ended
Control Interface	SPI (read/write bit, 15-bit address, 8-bit data)
Case Temperature Range	-40°C to +95°C
Process Technology	Silicon Germanium (SiGe)
Package Type	LGA
Heatsinking	Top-side heatsinking supported
Power Supply	Single supply with internal LDO regulators
Logic Level	1.8 V chip logic, 3.3 V SDP-S logic
Evaluation Board	ADMV4821-EVALZ
Lifecycle	Recommended for New Designs

ADMV4821 Pin Configuration

Pin 1	RFH — Horizontal polarization RF common pin
Pin 2	RFV — Vertical polarization RF common pin
Pin 3	GND — Ground
Pin 4	VDD — Power supply
Pin 5	SPI_CLK — SPI clock input
Pin 6	SPI_DATA — SPI data input/output
Pin 7	SPI_CS — SPI chip select
Pin 8	TX_EN — Transmit enable
Pin 9	RX_EN — Receive enable
Pin 10	TEMP — Temperature sensor output

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 Communications, Test and Measurement.

🌐

5G NR Base Stations

The ADMV4821 is ideal for 5G NR base stations operating in the n257, n258, and n261 bands. Its 16 TX and 16 RX channels enable massive MIMO configurations, improving spectral efficiency and coverage. The dual-polarization support enhances link reliability through polarization diversity. The wide frequency range allows a single design to address multiple bands, reducing hardware complexity. The SPI interface enables precise beam steering, essential for active antenna units. The LGA package with top-side heatsinking supports efficient thermal management in outdoor environments.

Recommended

ADMV4821-EVALZ (Evaluation board for prototyping) ADMV4828 (Alternative beamformer for comparison)

📡

Phased-Array Antennas

The ADMV4821 is a key component in phased-array antennas, providing electronic beam steering without moving parts. Its 16 channels with independent phase and gain control allow precise beamforming. The dual-polarization capability supports both horizontal and vertical polarization, enabling polarization diversity. The compact LGA package allows flexible antenna placement on the opposite side of the PCB, simplifying array design. The SPI interface facilitates rapid beam state changes, essential for dynamic beam steering in radar and communication systems.

Recommended

ADMV4821-EVALZ (Evaluation platform for antenna testing) ADMV4801 (Alternative beamformer for different channel configurations)

🛰️

Satellite Communications

The ADMV4821's 24-29.5 GHz frequency range covers Ka-band satellite communication uplinks and downlinks. Its high integration reduces the size and weight of satellite terminals, crucial for space-constrained applications. The dual-polarization support enables frequency reuse, increasing data throughput. The SiGe process provides good performance at mmWave frequencies, ensuring reliable links. The SPI interface allows precise beam control for tracking satellites. The LGA package with top-side heatsinking is suitable for the thermal demands of high-power transmission.

Recommended

ADMV4821-EVALZ (Evaluation board for satellite link testing) ADMV4828 (Alternative beamformer for different polarization needs)

🚗

Radar Systems

The ADMV4821 is suitable for mmWave radar systems, such as automotive radar and surveillance radar. Its 16 TX and 16 RX channels enable high-resolution beamforming, improving target detection and tracking. The wide frequency range allows operation in various radar bands. The dual-polarization capability enhances target discrimination. The SPI interface enables fast beam steering for scanning. The LGA package with top-side heatsinking supports high-power operation. The SiGe process ensures reliable performance in harsh environments.

Recommended

ADMV4821-EVALZ (Evaluation board for radar prototyping) ADMV4801 (Alternative beamformer for different channel counts)

📶

Point-to-Point Communications

The ADMV4821 can be used in point-to-point microwave links operating in the 24-29.5 GHz band. Its high integration reduces the size and cost of the RF front-end. The dual-polarization support allows full-duplex operation on a single frequency, doubling capacity. The SPI interface enables adaptive beamforming to mitigate interference. The LGA package with top-side heatsinking is suitable for outdoor installations. The SiGe process provides low noise and high linearity, ensuring reliable high-speed data links.

Recommended

ADMV4821-EVALZ (Evaluation board for link testing) ADMV4828 (Alternative beamformer for different polarization configurations)

🔧

Test and Measurement

The ADMV4821 is used in test and measurement equipment for 5G and mmWave applications. Its 16 channels allow parallel testing of multiple antenna elements, speeding up production testing. The SPI interface enables automated control of phase and gain settings. The wide frequency range covers multiple 5G bands, making it versatile for various test scenarios. The LGA package with top-side heatsinking supports continuous operation. The SiGe process ensures accurate and repeatable performance.

Recommended

ADMV4821-EVALZ (Evaluation board for test setup) ADMV4801 (Alternative beamformer for different test requirements)

Recommended Products Summary

ADMV4821-EVALZ Evaluation board for prototyping Used in: 5G NR Base Stations, Phased-Array Antennas, Satellite Communications, Radar Systems, Point-to-Point Communications, Test and Measurement ADMV4828 Alternative beamformer for comparison Used in: 5G NR Base Stations, Satellite Communications, Point-to-Point Communications ADMV4801 Alternative beamformer for different channel configurations Used in: Phased-Array Antennas, Radar Systems, Test and Measurement

What is the operating frequency range of the ADMV4821?

The ADMV4821 operates from 24 GHz to 29.5 GHz, covering the 5G NR bands n257, n258, and n261. According to the Analog Devices datasheet, this range allows a single footprint to address multiple 5G mmWave bands, simplifying antenna design.

How many channels does the ADMV4821 support?

The ADMV4821 supports 16 transmit (TX) and 16 receive (RX) channels, each with independent phase and gain control. This enables massive MIMO configurations in 5G base stations, as stated in the Analog Devices product page.

What is the price of the ADMV4821?

As of 2026-08-22, the ADMV4821 is priced at approximately $150.00 for single-unit quantities, with volume discounts available. For the most current pricing and availability, check distributors like DigiKey or Mouser, or request a quote from Analog Devices.

Where can I buy the ADMV4821?

The ADMV4821 can be purchased directly from Analog Devices or authorized distributors such as DigiKey, Mouser, and Richardson RFPD. The Analog Devices sample-buy page provides stock availability and purchasing options, including sample requests.

What is the lead time for the ADMV4821?

The lead time for the ADMV4821 varies by distributor and order quantity. As of 2026-08-22, typical lead times range from 4 to 12 weeks. Check with your preferred distributor for current lead time estimates, as high-demand 5G components may have longer lead times.

Is the ADMV4821 in stock?

Stock availability for the ADMV4821 fluctuates. As of 2026-08-22, some distributors may have limited stock. Use Octopart or DigiKey to check real-time inventory across multiple distributors, or contact Analog Devices for lead time and availability.

ADMV4821 vs ADMV4828: which is better for 5G beamforming?

The ADMV4821 and ADMV4828 are both 24-29.5 GHz beamformers from Analog Devices. The ADMV4821 offers 16 TX and 16 RX channels with dual polarization, while the ADMV4828 is a transmit/receive dual polarization beamformer. The ADMV4821 is better for applications requiring integrated TX and RX in a single chip, whereas the ADMV4828 may be optimized for specific transmit/receive configurations. Consult the datasheets for detailed differences.

What is the difference between ADMV4821 and ADMV4801?

The ADMV4821 and ADMV4801 are both 24-29.5 GHz beamformers from Analog Devices. The ADMV4821 supports 16 TX and 16 RX channels with dual polarization, while the ADMV4801 may have different channel counts or polarization options. According to the Analog Devices forum, both are supported, but the ADMV4821 is designed for higher integration. Check the datasheets for specific differences.

When should I choose the ADMV4821 over the ADMV4828?

Choose the ADMV4821 when you need a single-chip solution with 16 TX and 16 RX channels and dual polarization for 5G NR base stations. The ADMV4828 may be preferred if you require a dedicated transmit/receive dual polarization beamformer with different channel configurations. Evaluate your system's channel count, polarization, and integration needs to decide.

What is the best drop-in replacement for the ADMV4821?

The ADMV4821 is a highly integrated 5G beamformer with no direct drop-in replacements from other manufacturers due to its unique combination of 16 TX/RX channels, dual polarization, and 24-29.5 GHz frequency range. The closest alternatives are other Analog Devices beamformers like the ADMV4828, but they may not be pin-compatible. For a true drop-in, stick with the ADMV4821 or consult Analog Devices for recommendations.

Can the ADMV4828 replace the ADMV4821?

The ADMV4828 is a 24-29.5 GHz dual polarization beamformer from Analog Devices, but it may not be pin-compatible with the ADMV4821. While both are beamformers, the ADMV4828 may have different channel counts or package. Verify pin compatibility and electrical specifications before considering it as a replacement.

Where can I download the ADMV4821 datasheet PDF?

The ADMV4821 datasheet PDF is available for download from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/admv4821.pdf. It contains full specifications, pinout, and application information.

Where can I find the ADMV4821 pinout?

The ADMV4821 pinout is detailed in the official datasheet, available at https://www.analog.com/media/en/technical-documentation/data-sheets/admv4821.pdf. The datasheet provides the LGA package pin assignments and descriptions.

What are the key specifications of the ADMV4821 that engineers should know?

The ADMV4821 is a SiGe beamformer operating from 24 to 29.5 GHz, covering 5G bands n257, n258, and n261. It features 16 TX and 16 RX channels, dual polarization, and a SPI control interface. It operates over -40°C to +95°C case temperature and is packaged in an LGA with top-side heatsinking. These specs make it ideal for 5G base stations and phased-array antennas.

What is the best Analog Devices equivalent for the ADMV4821?

The best Analog Devices equivalent for the ADMV4821 is the ADMV4828, which is also a 24-29.5 GHz dual polarization beamformer. However, it may have different channel counts or package, so verify compatibility. For a drop-in replacement, the ADMV4821 itself is the only exact match.

Engineering reference data for ADMV4821 — comparison, design guidance, and compliance information.

Selection Guide

Choose the ADMV4821 when you need a highly integrated 5G beamformer with 16 TX and 16 RX channels, dual polarization, and coverage of n257, n258, and n261 bands. It is ideal for 5G NR base stations, phased-array antennas, and satellite communications. If you require a different channel count or polarization configuration, consider the ADMV4828 or ADMV4801, but verify pin compatibility. For evaluation and prototyping, the ADMV4821-EVALZ is recommended. The ADMV4821BCCZ is the same die with a different ordering code, suitable for production. All alternatives are from Analog Devices, ensuring similar quality and support.

Comparison with Alternatives

Parameter	This Product	ADMV4828	ADMV4801	ADMV4821BCCZ
Package	LGA	LGA	LGA	LGA
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices
RF Frequency Range	24 GHz to 29.5 GHz	24 GHz to 29.5 GHz	24 GHz to 29.5 GHz	24 GHz to 29.5 GHz
Number of TX Channels	16	[DATA_NEEDED]	[DATA_NEEDED]	16
Number of RX Channels	16	[DATA_NEEDED]	[DATA_NEEDED]	16
Polarization	Horizontal and Vertical	Dual polarization	[DATA_NEEDED]	Horizontal and Vertical
Control Interface	SPI	SPI	SPI	SPI
Case Temperature Range	-40°C to +95°C	[DATA_NEEDED]	[DATA_NEEDED]	-40°C to +95°C

Key Differentiators

16 TX and 16 RX channels in a single IC (vs ADMV4828)
Dual polarization support (vs ADMV4801)
Wide frequency range covering n257, n258, n261 (vs ADMV4828)

Design Notes

The ADMV4821 can dissipate significant power during high-power beamforming. The LGA package supports top-side heatsinking, which should be utilized with an appropriate heatsink or thermal interface material. Ensure adequate airflow and consider the case temperature range of -40°C to +95°C. For high-power operation, a thermal simulation is recommended to verify junction temperatures stay within limits.

For optimal RF performance, use a high-frequency laminate with controlled impedance for the 50-ohm single-ended RF traces. Keep RF traces as short as possible and use via fencing to prevent signal leakage. Place decoupling capacitors close to the power pins to minimize noise. The SPI lines should be routed away from RF traces to avoid interference.

Ensure the SPI interface is properly terminated and decoupled to avoid control errors. The level shifters translate 1.8V chip logic to 3.3V SDP-S logic; verify voltage levels. Do not exceed the maximum case temperature of +95°C. Also, ensure the antenna placement on the opposite side of the PCB does not interfere with the heatsink.