Overview
The HMC544A and HMC544AE are low-cost Single-Pole Double-Throw (SPDT) switches designed by Analog Devices Inc. These devices are fabricated using GaAs PHEMT technology and are packaged in a compact 6-lead SOT26 surface-mount package. They are optimized for transmit/receive applications requiring very low insertion loss at medium power levels.
The HMC544A and HMC544AE can control signals from DC to 4.0 GHz, making them particularly suitable for applications in the 450, 900, 1900, 2300, and 2700 MHz frequency bands with an insertion loss of less than 0.5 dB. These switches are known for their high linearity performance, including a 1 dB compression point of +36 dBm and a third-order intercept point of +60 dBm at a +3V bias.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Insertion Loss | 0.2 dB @ 1 GHz | dB |
| Input P1dB | +39 dBm | dBm |
| Input IP3 | +60 dBm | dBm |
| Control Voltage Range | -0.2 to +12 Vdc | Vdc |
| Operating Frequency | DC to 4.0 GHz | GHz |
| Package Type | 6-lead SOT26 | |
| Temperature Range | -40 to 85°C | °C |
| Thermal Resistance | 113.3 °C/W | °C/W |
Key Features
- Very Low Insertion Loss: 0.2 dB @ 1 GHz, making it ideal for high-frequency applications.
- High Input P1dB and IP3: +39 dBm and +60 dBm respectively, ensuring high linearity performance.
- Positive Control Operation: Operates with control voltages of 0/+3V to 0/+5V, allowing for easy integration with logic circuits.
- Compact Package: 6-lead SOT26 surface-mount package for space-efficient designs.
- Low DC Current: On-chip circuitry allows for low DC current operation.
Applications
- Cellular/PCS/3G Infrastructure: Basestations and repeaters.
- WLAN, WiMAX, and WiBro: Wireless local area networks and broadband wireless access.
- Microwave and Fixed Wireless Radios: High-frequency communication systems.
Q & A
- What is the operating frequency range of the HMC544A?
The HMC544A operates from DC to 4.0 GHz.
- What is the typical insertion loss of the HMC544A at 1 GHz?
The typical insertion loss is 0.2 dB @ 1 GHz.
- What are the input P1dB and IP3 values of the HMC544A?
The input P1dB is +39 dBm, and the input IP3 is +60 dBm.
- What is the control voltage range for the HMC544A?
The control voltage range is -0.2 to +12 Vdc.
- What package type is the HMC544A available in?
The HMC544A is available in a 6-lead SOT26 surface-mount package.
- What are the typical applications of the HMC544A?
Typical applications include cellular/PCS/3G infrastructure, WLAN, WiMAX, WiBro, and microwave and fixed wireless radios.
- What is the thermal resistance of the HMC544A?
The thermal resistance is 113.3 °C/W.
- How should the RF ports be connected in the application circuit?
The RF ports should be DC coupled and matched to 50 Ohms, with blocking capacitors required for each RF port.
- What is the recommended logic interface for controlling the HMC544A?
The control inputs can be driven directly with CMOS logic (HC) with Vdd of +3V to +5V applied to the CMOS logic gates.
- Is the HMC544A RoHS-compliant?
Yes, the HMC544AE version is RoHS-compliant.
