A solid-state, broad-band switch with a frequency range of 9 kHz to 30 GHz is called the ADRF5020BCCZN. Manufactured by Analog Devices, this chip can be utilized for both switching and attenuation functionality.

The ADRF5020BCCZN chip is often used in scenarios that require switching or attenuation functionality across a wide frequency range. It finds application in areas such as:

1. Wireless communication systems

2. Test and measurement equipment

3. Radar systems

Key features of the ADRF5020BCCZN include:

1. Wide frequency range: 9 kHz to 30 GHz

2. High isolation and low insertion loss

3. High linearity

4. Single positive supply and negative voltage for gate control

Let's detail a circuit connection example for a test and measurement equipment scenario:

1. Power Supply: Connect the VDD pin (Pin 15) of the ADRF5020BCCZN to the positive power supply of the system (5V typically).

2. Ground: Connect the GND pin (Pin 10) of the ADRF5020BCCZN to the system ground.

3. RF Input/Output: The RF1 (Pin 1) and RF2 (Pin 5) of the ADRF5020BCCZN should be connected to the RF signal path in your system.

4. Control Voltage: The switch's status is managed by the VCTL pin (Pin 3). Typically, a 0V applied at VCTL will turn the switch off, while a voltage equal to VDD will turn the switch on.

When designing circuits with the ADRF5020BCCZN, consider the following:

1. Impedance Matching: Depending on the specific frequency of operation, you may need to design an impedance matching network at the RF ports to maximize power transfer.

2. Decoupling: It's good practice to place a decoupling capacitor close to the VDD pin to minimize power supply noise.

3. Heat Dissipation: The power dissipation in the ADRF5020BCCZN can increase with frequency, so thermal management should be considered.

Remember, the specifics of the connection and design can vary based on the details of the system you're integrating the ADRF5020BCCZN into. The datasheet should always be consulted for the most precise details.