Overview
The HMC646LP2E is a Single-Pole Double-Throw (SPDT) switch designed by Analog Devices Inc. This component is housed in a leadless 2x2mm DFN surface mount plastic package. It is specifically engineered for transmit/receive and Low Noise Amplifier (LNA) protection applications, requiring very low distortion and high power handling capabilities. The switch can handle signals from 100 MHz to 2100 MHz and is notable for its failsafe operation, where the transmit path remains active even when no DC power is applied.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Frequency Range | 869 - 960 | 1525 - 1661 | 2010 - 2025 | MHz |
| Insertion Loss (Tx - RFC) | 0.3 | 0.4 | 0.6 | dB |
| Insertion Loss (RFC - Rx) | 0.7 | 0.9 | 1.1 | dB |
| Isolation (Tx - RFC) | 20 | 28 | 27 | dB |
| Isolation (RFC - Rx) | 15 | 20 | 22 | dB |
| Return Loss (Tx - RFC) | 17 | 25 | 27 | dB |
| Return Loss (RFC - Rx) | 20 | 25 | 12 | dB |
| Input Power for 0.1 dB Compression (Tx - RFC) | 44 | 46 | 46 | dBm |
| Input Third Order Intercept (Tx - RFC) | 71 | 74 | 74 | dBm |
| Switching Characteristics tRISE, tFALL (10/90% RF) | 100 | 320 | 320 | ns |
| Switching Characteristics tON, tOFF (50% CTL to 90% RF / 10% RF) | 100 | 320 | 320 | ns |
Key Features
- Failsafe Operation: The switch defaults to the transmit path when no DC power is applied.
- High Power Handling: Capable of handling up to 40 watts with less than 10% duty cycle.
- Low Insertion Loss: As low as 0.4 dB.
- High Input P0.1dB: +46 dBm on the transmit port.
- High IIP3: +74 dBm on the transmit port.
- Single Positive Control: Operates with a control voltage of 0/+3V to 0/+8V.
- Compact Package: 2x2mm DFN surface mount plastic package.
Applications
- LNA Protection & T/R Switching: Ideal for protecting Low Noise Amplifiers and switching between transmit and receive paths.
- TD-SCDMA / 3G Infrastructure: Suitable for use in TD-SCDMA and 3G repeaters and infrastructure.
- Satellite Subscriber Terminals: Used in satellite communication systems.
- Private Mobile Radio & Public Safety Handsets: Applied in PMR and public safety communication devices.
- Automotive Telematics: Utilized in automotive telematics systems.
Q & A
- What is the frequency range of the HMC646LP2E?
The HMC646LP2E operates over a frequency range of 100 MHz to 2100 MHz.
- What is the maximum power handling of the HMC646LP2E?
The switch can handle up to 40 watts with less than 10% duty cycle.
- What is the insertion loss of the HMC646LP2E?
The insertion loss is as low as 0.4 dB.
- What is the IIP3 of the HMC646LP2E?
The Input Third Order Intercept (IIP3) is +74 dBm on the transmit port.
- What is the control voltage range for the HMC646LP2E?
The control voltage range is 0/+3V to 0/+8V.
- What is the default state of the switch when no DC power is applied?
The switch defaults to the transmit path when no DC power is applied.
- What type of package does the HMC646LP2E come in?
The HMC646LP2E comes in a 2x2mm DFN surface mount plastic package.
- What are some typical applications of the HMC646LP2E?
Typical applications include LNA protection, T/R switching, TD-SCDMA/3G infrastructure, satellite subscriber terminals, private mobile radio, public safety handsets, and automotive telematics.
- How do I order the HMC646LP2E?
You can order the HMC646LP2E through Analog Devices Inc. or authorized distributors like Digi-Key, Mouser, etc.
- What are the switching characteristics of the HMC646LP2E?
The switching characteristics include tRISE, tFALL (10/90% RF) and tON, tOFF (50% CTL to 90% RF / 10% RF) which are typically 100 ns to 320 ns.
