Overview
The HMC349AMS8GETR from Analog Devices Inc. is a gallium arsenide (GaAs) pseudo-morphic high electron mobility transistor (PHEMT) single-pole, double throw (SPDT) switch. This component is designed to operate from 100 MHz to 4 GHz, making it highly suitable for various RF and microwave applications. It features high isolation, low insertion loss, and high input linearity, which are critical for maintaining signal integrity in wireless and cellular infrastructure systems.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 100 MHz to 4 GHz |
| Supply Voltage (VDD) | 3 V to 5 V |
| Current Consumption (IDD) | 1.2 mA to 3.5 mA |
| Insertion Loss | 0.9 dB |
| Isolation | 57 dB |
| Input IP3 | 52 dBm (VDD = 5 V) |
| Input P1dB | 34 dBm |
| RF Input Power (Through Path) | 33.5 dBm (VDD = 5 V, TCASE = 85°C) |
| Package Type | 8-lead mini small outline package with exposed pad (MINI_SO_EP) |
| Digital Control Input Voltage | Low: 0 V to 0.8 V, High: 2 VDD V |
Key Features
- High isolation of 57 dB and low insertion loss of 0.9 dB
- High input IP3 of 52 dBm and high input P1dB of 34 dBm
- Single positive supply voltage from 3 V to 5 V
- CMOS-/TTL-compatible control interface
- Internally matched to 50 Ω at RF ports, eliminating the need for external matching components
- Bidirectional design allowing RF signal to be applied in either direction between ports
- Driver incorporated for simplified control interface
Applications
- Cellular/4G infrastructure
- Wireless infrastructure
- Mobile radios
- Test equipment
Q & A
- What is the frequency range of the HMC349AMS8GETR?
The HMC349AMS8GETR operates from 100 MHz to 4 GHz. - What is the supply voltage range for this component?
The supply voltage range is from 3 V to 5 V. - What is the typical insertion loss of the HMC349AMS8GETR?
The typical insertion loss is 0.9 dB. - What is the isolation performance of this switch?
The isolation performance is up to 57 dB. - Is the HMC349AMS8GETR internally matched to 50 Ω?
Yes, it is internally matched to 50 Ω at the RF ports. - What type of package does the HMC349AMS8GETR come in?
The component comes in an 8-lead mini small outline package with an exposed pad (MINI_SO_EP). - Is the control interface CMOS-/TTL-compatible?
Yes, the control interface is CMOS-/TTL-compatible. - What are the typical applications for the HMC349AMS8GETR?
Typical applications include cellular/4G infrastructure, wireless infrastructure, mobile radios, and test equipment. - Does the HMC349AMS8GETR require external matching components?
No, it does not require external matching components as it is internally matched to 50 Ω. - Can the RF signal be applied in either direction between ports?
Yes, the design is bidirectional, allowing the RF signal to be applied in either direction between ports.
