Overview
The HMC347G8 is a broadband high isolation non-reflective GaAs MESFET SPDT (Single Pole Double Throw) switch produced by Analog Devices Inc. This component is housed in an 8-lead glass/metal (hermetic) surface mount package. It operates from DC to 8 GHz, making it suitable for a wide range of high-frequency applications. The switch features high isolation and low insertion loss, with no requirement for a bias supply, and it uses complementary negative control voltage logic lines of -5/0V.
Key Specifications
| Parameter | Frequency Range | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Insertion Loss | DC - 2.0 GHz | 2.0 | 2.2 | 2.3 | dB |
| Insertion Loss | DC - 6.0 GHz | 2.2 | 2.6 | 2.7 | dB |
| Insertion Loss | DC - 8.0 GHz | 2.3 | 2.7 | - | dB |
| Isolation | DC - 2.0 GHz | 39 | 43 | - | dB |
| Isolation | DC - 6.0 GHz | 25 | 28 | - | dB |
| Isolation | DC - 8.0 GHz | 22 | 25 | - | dB |
| Return Loss “On State” | DC - 2.0 GHz | 9 | 10 | - | dB |
| Return Loss “On State” | DC - 8.0 GHz | 6 | 12 | - | dB |
| Input Power for 1 dB Compression | 0.5 - 8.0 GHz | 19 | 23 | - | dBm |
| Input Third Order Intercept | 0.5 - 8.0 GHz | 38 | 43 | - | dBm |
Key Features
- Broadband operation from DC to 8 GHz
- High isolation: >42 dB up to 2 GHz and >25 dB up to 8 GHz
- Low insertion loss: 2 dB at 6 GHz
- Non-reflective design
- 8-lead glass/metal (hermetic) surface mount package
- No bias supply required; operates with -5/0V control voltage logic lines
- High return loss in both on and off states
- High input power handling for 1 dB compression and third-order intercept point
Applications
- Telecom Infrastructure
- Microwave Radio & VSAT
- Military Radios, Radar & ECM
- Test Instrumentation
Q & A
- What is the frequency range of the HMC347G8?
The HMC347G8 operates from DC to 8 GHz.
- What is the isolation performance of the HMC347G8?
The HMC347G8 features >42 dB isolation up to 2 GHz and >25 dB isolation up to 8 GHz.
- What is the insertion loss of the HMC347G8?
The insertion loss is approximately 2 dB at 6 GHz.
- Does the HMC347G8 require a bias supply?
No, the HMC347G8 does not require a bias supply; it operates using -5/0V control voltage logic lines.
- What is the package type of the HMC347G8?
The HMC347G8 is housed in an 8-lead glass/metal (hermetic) surface mount package.
- What are the typical applications of the HMC347G8?
The HMC347G8 is ideal for telecom infrastructure, microwave radio & VSAT, military radios, radar & ECM, and test instrumentation.
- What is the maximum input power for 1 dB compression?
The maximum input power for 1 dB compression is 23 dBm from 0.5 to 8.0 GHz.
- What is the input third-order intercept point?
The input third-order intercept point is 43 dBm from 0.5 to 8.0 GHz.
- What are the operating and storage temperatures for the HMC347G8?
The operating temperature is -55°C to +85°C, and the storage temperature is -65°C to +150°C.
- Is the HMC347G8 sensitive to electrostatic discharge (ESD)?
Yes, the HMC347G8 is an electrostatic sensitive device and requires careful handling to prevent damage.
