HMC349 RF Switch Module 3-5V 50 Ohm SMA Interface
The HMC349 RF Switch Module is a high-performance, nonreflective, gallium arsenide single-pole, double-throw switch designed for operation from 100 MHz to 4 GHz. This module is ideal for applications in wireless infrastructure, mobile radios, and test equipment where high isolation and low insertion loss are critical. The module features a 50 Ohm impedance and is compatible with SMA connectors , making it easy to integrate into various RF systems. It operates on a single, positive supply voltage ranging from 3V to 5V and offers CMOS/TTL-compatible control logic. The HMC349 provides excellent power handling capabilities, with a typical 1 dB power compression of 34 dBm and a third-order intercept point of 53 dBm, ensuring reliable performance in demanding environments.
Features:
- Made of material, corrosion‑resistant, anti‑oxidation, increased service life.
- High working frequency, increases the scope of application, strong practicality.
- The large heat dissipation area can increase the continuous working time.
- Advanced manufacturing technology, high reliability and stable performance.
- Built to meet standard specification, strictly follow factory quality control.
Specification:
| Parameter | Specification |
|---|---|
| Switch Type | SPDT (single-pole, double-throw) |
| Frequency Range | 0.1–4.0 GHz |
| Insertion Loss | ≈1.0 dB (≤2 GHz) |
| Isolation | up to ~62 dB (≤2 GHz) |
| Input Return Loss | ≥15–20 dB (typical, ≤2 GHz) |
| Input P<sub>1dB</sub> | ≈34 dBm (V<sub>DD</sub>=5 V) |
| Input IP<sub>3</sub> | ≈53 dBm (V<sub>DD</sub>=5 V) |
| Supply Voltage (V<sub>DD</sub>) | +3.0 – +5.0 V |
| Control Interface | CMOS/TTL logic (3–5 V, active-low enable) |
| Impedance | 50 Ω |
| Connectors | SMA (female) for RFC, RF1, RF2 ports |
| Dimensions | 40mm×30mm |
Pin Configuration:
SMA Connectors:
- RFC: RF Common Port (50 Ohm, DC-coupled, requires external DC blocking capacitor).
- RF1: RF Throw Port 1 (50 Ohm, DC-coupled, requires external DC blocking capacitor).
- RF2: RF Throw Port 2 (50 Ohm, DC-coupled, requires external DC blocking capacitor).
4-Pin Header:
|
Pin Position |
Label |
Description |
|---|---|---|
|
1 (leftmost) |
GND |
Ground |
| 2 |
VDD |
Supply Voltage (3V to 5V) |
| 3 |
CTRL |
Logic Control Input |
|
4 (rightmost) |
EN |
Logic Enable Input |
Applications:
- Wireless infrastructure.
- Mobile radios.
- Test equipment.
Package Includes:
- 1 x HMC349 RF Switch Module with SMA interfaces.
- 1 x connection cable.
- 1 x Qualified Certificate.
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