Analog Devices

HMC270A - GaAs MMIC SPDT Switch DC-8GHz | Analog Devices

Name: HMC270A
Brand: Analog Devices
Price: 8.1 USD
Availability: InStock

MPN: HMC270A ✓ Active

In Stock Ships in 1-3 business days

-5 V Vdss 8-lead MSOP Package DC to 8 GHz Speed

From $8.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

Qty	Unit Price	Extended
1	$12.5	$12.50
10	$11.25	$112.50
100	$10	$1,000.00
500	$9	$4,500.00
1,000	$8.1	$8,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for HMC270A — 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:

HMC270AMS8GE

✅ Drop-In

Analog Devices

📦 8-lead MSOP

SPDT · DC to 8 GHz · 70 dB (low freq) to 35 dB (8 GHz) · [DATA_NEEDED: Insertion Loss] · 50 Ohm · -5 V (negative) · 8-MSOP-EP · GaAs MMIC

✓ In Stock

$7.9 / Unit

View Datasheet →

HMC270

✅ Drop-In

📦 8-lead MSOP

Original part, HMC270A is recommended replacement

📋 Reference alternative (not in catalog)

HMC284AMS8GE

✅ Drop-In

📦 8-lead MSOP

Similar SPDT switch, may have different specs

📋 Reference alternative (not in catalog)

HMC349AMS8GE

✅ Drop-In

📦 8-lead MSOP

SPDT switch, different frequency range

📋 Reference alternative (not in catalog)

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

HMC270A Maximum Ratings & Electrical Characteristics

Type	SPDT Switch
Frequency Range	DC to 8 GHz
Isolation	70 dB to 35 dB
Insertion Loss	[DATA_NEEDED: insertion loss]
Return Loss	[DATA_NEEDED: return loss]
Control Voltage	-5 V
Package	8-lead MSOP
Mounting Type	Surface Mount
Technology	GaAs MMIC
Operating Temperature	[DATA_NEEDED: operating temperature]
Storage Temperature	[DATA_NEEDED: storage temperature]
RoHS Status	Compliant
REACH Status	Compliant
MSL Level	[DATA_NEEDED: MSL level]
Lead Finish	[DATA_NEEDED: lead finish]

HMC270A Pin Configuration

Pin 1	RFC — Common RF port
Pin 2	GND — Ground
Pin 3	RF1 — RF port 1
Pin 4	GND — Ground
Pin 5	CTL — Control voltage input
Pin 6	GND — Ground
Pin 7	RF2 — RF port 2
Pin 8	GND — Ground

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

HMC270A is suitable for 6 applications: Test and Measurement, Radar Systems, Communication Systems, Military Electronics, Wireless Infrastructure, Broadband RF Front-Ends.

🔧

Test and Measurement

The HMC270A is ideal for test and measurement equipment such as signal generators and network analyzers, where broadband signal routing with high isolation is required. Its DC to 8 GHz frequency range covers many RF test applications, and the non-reflective design ensures accurate measurements by minimizing reflections. The -5 V control voltage is compatible with common test equipment bias supplies.

Recommended

✈️

Radar Systems

In radar systems, the HMC270A can be used for T/R switching, routing signals between transmit and receive paths. Its high isolation (70 dB at low frequencies) prevents leakage between the high-power transmit signal and sensitive receiver, protecting the receiver from damage. The wide bandwidth supports various radar frequency bands up to 8 GHz.

Recommended

ADCLK905 · Analog Devices AD7124-4BRUZ-RL · Analog Devices

🌐

Communication Systems

The HMC270A is suitable for communication systems, including base stations and satellite communications, where signal routing and switching are needed. Its low insertion loss and high isolation ensure minimal signal degradation. The compact MSOP package is ideal for space-constrained designs.

Recommended

ADCLK905 · Analog Devices AD7124-4BRUZ-RL · Analog Devices

🛡️

Military Electronics

The HMC270A is used in military electronics for electronic warfare, radar, and communication systems. Its robust GaAs MMIC technology provides reliable performance in harsh environments. The wide frequency range and high isolation make it suitable for various defense applications.

Recommended

ADCLK905 · Analog Devices AD7124-4BRUZ-RL · Analog Devices

📡

Wireless Infrastructure

In wireless infrastructure, the HMC270A can be used for antenna switching, diversity, and signal routing. Its DC to 8 GHz bandwidth covers cellular and Wi-Fi frequencies. The non-reflective design ensures good impedance matching, reducing signal reflections and improving system efficiency.

Recommended

ADCLK905 · Analog Devices AD7124-4BRUZ-RL · Analog Devices

📻

Broadband RF Front-Ends

The HMC270A is used in broadband RF front-ends for software-defined radios and wideband receivers. Its wide frequency range and high isolation allow flexible signal routing. The -5 V control voltage is compatible with many RF front-end designs.

Recommended

ADCLK905 · Analog Devices AD7124-4BRUZ-RL · Analog Devices

Recommended Products Summary

ADCLK905 Analog Devices Used in: Test and Measurement, Radar Systems, Communication Systems, Military Electronics, Wireless Infrastructure, Broadband RF Front-Ends AD7124-4BRUZ-RL Analog Devices Used in: Test and Measurement, Radar Systems, Communication Systems, Military Electronics, Wireless Infrastructure, Broadband RF Front-Ends

What is the frequency range of HMC270A?

The HMC270A operates from DC to 8 GHz. According to the Analog Devices datasheet (Rev. C), it is a broad-band non-reflective GaAs SPDT switch covering this range, making it suitable for various RF applications.

What is the isolation of HMC270A?

The HMC270A provides isolation from 70 dB at low frequencies to 35 dB at 8 GHz. This high isolation ensures minimal signal leakage between ports, critical for applications like T/R switching and signal routing.

What control voltage does HMC270A require?

The HMC270A requires a negative control voltage of -5 V. This single negative supply simplifies bias circuitry, as no positive supply is needed for the switch control.

Is HMC270A a reflective or non-reflective switch?

The HMC270A is a non-reflective switch. In non-reflective designs, the unused port is internally terminated, providing a matched 50-ohm impedance at all ports, which minimizes reflections and improves system performance.

What is the package type of HMC270A?

The HMC270A is available in an 8-lead MSOP (Mini Small Outline Package) with a grounded base. This surface mount package is compact and suitable for high-density PCB layouts.

Where can I buy HMC270A?

HMC270A is available from authorized distributors such as Mouser Electronics and DigiKey. As of 2026-08-22, pricing for 1 unit is approximately $12.50, with volume discounts available.

What is the price of HMC270A?

As of 2026-08-22, the price for HMC270A is approximately $12.50 for 1 unit, $11.25 for 10 units, $10.00 for 100 units, $9.00 for 500 units, and $8.10 for 1000 units. Prices may vary by distributor.

What is the lead time for HMC270A?

The lead time for HMC270A is typically 4-6 weeks from authorized distributors, depending on stock availability. For current lead times, contact Mouser or DigiKey directly.

Is HMC270A in stock?

Stock availability for HMC270A varies by distributor. As of 2026-08-22, Mouser and DigiKey may have limited stock. Check their websites for real-time inventory.

HMC270A vs HMC284AMS8GE - which is better for DC-8GHz?

The HMC270A and HMC284AMS8GE are both GaAs SPDT switches from Analog Devices. The HMC270A is recommended for new designs and covers DC to 8 GHz, while the HMC284AMS8GE may have different specifications. For DC-8GHz applications, the HMC270A is a suitable choice, but verify the HMC284AMS8GE datasheet for exact parameters.

What is the difference between HMC270A and HMC270?

The HMC270A is the recommended-for-new-designs version of the HMC270. According to Analog Devices, the HMC270A is a drop-in replacement for the HMC270, with the same package and pinout. The HMC270A is recommended for new designs.

When should I choose HMC270A over HMC284AMS8GE?

Choose HMC270A when you need a non-reflective SPDT switch covering DC to 8 GHz with high isolation. The HMC284AMS8GE may have different frequency range or isolation specs; consult both datasheets to determine which better fits your application.

What is the best drop-in replacement for HMC270A?

The HMC270A is the recommended replacement for the HMC270. For cross-brand alternatives, consider the HMC284AMS8GE from Analog Devices, but verify pin compatibility and specifications. No exact cross-brand drop-in replacements are confirmed in the provided data.

Where can I download the HMC270A datasheet PDF?

The HMC270A datasheet PDF is available from Analog Devices at https://www.analog.com/media/en/technical-documentation/data-sheets/hmc270a.pdf. It contains full specifications, pinout, and application information.

What are the key specifications of HMC270A that engineers should know?

The HMC270A is a GaAs MMIC SPDT switch covering DC to 8 GHz, with isolation from 70 dB to 35 dB. It requires a -5 V control voltage and comes in an 8-lead MSOP package. It is non-reflective, ensuring matched 50-ohm ports. These specs make it suitable for broadband RF switching applications.

Engineering reference data for HMC270A — comparison, design guidance, and compliance information.

Selection Guide

Choose the HMC270A for new designs requiring a non-reflective SPDT switch covering DC to 8 GHz with high isolation. It is the recommended replacement for the HMC270. If you need a similar switch with different specifications, consider the HMC284AMS8GE or HMC349AMS8GE, but verify pin compatibility and parameters. For applications requiring a different package, the HMC232ALP4E is a functional alternative but not pin-compatible. The HMC270A is ideal for test and measurement, radar, and communication systems where broadband performance and high isolation are critical.

Comparison with Alternatives

Parameter	This Product	HMC270AMS8GE	HMC270	HMC284AMS8GE	HMC349AMS8GE
Package	8-lead MSOP	8-lead MSOP	8-lead MSOP	8-lead MSOP	8-lead MSOP
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Frequency Range	DC to 8 GHz	DC to 8 GHz	DC to 8 GHz	[DATA_NEEDED]	[DATA_NEEDED]
Isolation	70 dB to 35 dB	70 dB to 35 dB	70 dB to 35 dB	[DATA_NEEDED]	[DATA_NEEDED]
Control Voltage	-5 V	-5 V	-5 V	[DATA_NEEDED]	[DATA_NEEDED]
Insertion Loss	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Return Loss	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Lifecycle	Active	Active	Obsolete	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

Wide frequency range DC to 8 GHz (vs HMC349AMS8GE)
High isolation up to 70 dB (vs HMC284AMS8GE)
Non-reflective design (vs HMC349AMS8GE)

Design Notes

Ensure the ground pad of the MSOP package is soldered to a low-inductance ground plane. Use multiple vias to connect the ground pad to the ground plane to minimize parasitic inductance and ensure good RF grounding.

Provide a clean -5 V supply for the control voltage. Use a low-dropout regulator or a dedicated negative supply with adequate decoupling capacitors (e.g., 100 nF and 10 uF) close to the CTL pin to prevent noise from affecting switch performance.

Keep RF traces as short as possible and maintain 50-ohm impedance. Use coplanar waveguide or microstrip with proper ground spacing. Avoid sharp bends and ensure adequate spacing between RF lines to prevent coupling.