Overview
The HMC284AMS8GE is a high-performance Single-Pole Double-Throw (SPDT) RF switch designed and manufactured by Analog Devices Inc. This component is optimized for RF and IF applications, offering high isolation and minimal insertion loss. It is particularly suited for medium and low power applications across a wide frequency range from DC to 3.5 GHz.
Key Specifications
| Parameter | Frequency Range | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Insertion Loss | DC - 2.0 GHz | 0.5 | 0.6 | 0.7 | dB |
| Insertion Loss | DC - 3.0 GHz | 0.7 | 0.8 | 0.9 | dB |
| Insertion Loss | DC - 3.5 GHz | 0.9 | 1.0 | 1.1 | dB |
| Isolation (RF1 & RF2) | DC - 2.0 GHz | 41 | - | - | dB |
| Isolation (RF1 & RF2) | DC - 3.0 GHz | 34 | - | - | dB |
| Isolation (RF1 & RF2) | DC - 3.5 GHz | 30 | - | - | dB |
| Control Voltage Range | - | 0 | - | +5V | Vdc |
| Operating Temperature | - | -40 | - | +85 | °C |
| Package Type | - | - | - | MSOP-8 | - |
Key Features
- High Isolation: Greater than 45 dB, ensuring minimal signal leakage between ports.
- Non-Reflective Design: RF1 and RF2 are non-reflective in the “OFF” state, reducing signal reflections.
- Positive Control Voltage: Operates with 0/+5V control inputs compatible with CMOS and most TTL logic families.
- Ultra Small Package: MSOP-8 package, ideal for space-constrained designs.
- Low DC Current: On-chip circuitry allows for very low DC current operation.
- Broad Frequency Range: Operates from DC to 3.5 GHz, making it suitable for various RF applications.
Applications
- Cellular/PCS Base Stations: Ideal for switching and routing signals in cellular base stations.
- 2.4 GHz ISM Band: Suitable for applications in the 2.4 GHz Industrial, Scientific, and Medical (ISM) band.
- 3.5 GHz Wireless Local Loop: Used in wireless local loop systems operating at 3.5 GHz.
Q & A
- What is the frequency range of the HMC284AMS8GE?
The HMC284AMS8GE operates from DC to 3.5 GHz.
- What is the typical insertion loss of the HMC284AMS8GE?
The typical insertion loss is 0.6 dB at DC to 2.0 GHz, 0.8 dB at DC to 3.0 GHz, and 1.0 dB at DC to 3.5 GHz.
- What is the isolation between RF1 and RF2?
The isolation between RF1 and RF2 is greater than 45 dB at DC to 2.0 GHz, 34 dB at DC to 3.0 GHz, and 30 dB at DC to 3.5 GHz.
- What is the control voltage range for the HMC284AMS8GE?
The control voltage range is 0 to +5V.
- Is the HMC284AMS8GE RoHS-compliant?
Yes, the HMC284AMS8GE is RoHS-compliant.
- What is the package type of the HMC284AMS8GE?
The package type is MSOP-8.
- What are the typical applications of the HMC284AMS8GE?
Typical applications include cellular/PCS base stations, 2.4 GHz ISM band, and 3.5 GHz wireless local loop systems.
- How does the non-reflective design benefit the HMC284AMS8GE?
The non-reflective design reduces signal reflections in the “OFF” state, improving overall system performance.
- Can the HMC284AMS8GE be driven directly with CMOS logic?
Yes, the control inputs can be driven directly with CMOS logic (HC) with Vdd = +5 Volts applied to the CMOS logic gates.
- What is the operating temperature range of the HMC284AMS8GE?
The operating temperature range is -40°C to +85°C.
