HMC1122LP4METR

The HMC1122LP4METR is a high-performance, 6-bit digital step attenuator designed for applications requiring precise attenuation control, high linearity, and low insertion loss. This device is manufactured by Analog Devices Inc. (ADI) and offers a wide range of features that make it suitable for a variety of RF and microwave applications.

Key Features:

1. Wide Attenuation Range:
   • The HMC1122LP4METR provides an attenuation range from 0.5 dB LSB (Least Significant Bit) step to 31.5 dB, allowing for precise control of signal level.
2. High Linearity:
   • The device exhibits high linearity with an input 0.1 dB compression point (P0.1dB) of 30 dBm (typical) and an output third-order intercept point (IP3) of 55 dBm (typical). This ensures accurate signal reproduction and minimizes distortion.
3. Low Insertion Loss:
   • The HMC1122LP4METR offers low insertion loss of 1.1 dB at 1 GHz and 1.3 dB at 2 GHz, minimizing signal loss and maximizing system efficiency.
4. Fast RF Settling Time:
   • With an RF settling time of 250 ns (0.05 dB final RF output), the device provides quick response to attenuation changes, making it suitable for dynamic signal processing applications.
5. Single Power Supply:
   • The HMC1122LP4METR operates from a single power supply ranging from 3.3 V to 5 V, simplifying power management and reducing system complexity.
6. High ESD Robustness:
   • The device features an ESD (Electrostatic Discharge) rating of 2 kV HBM (Human Body Model), providing protection against electrostatic discharges and enhancing system reliability.
7. Compact Package:
   • The HMC1122LP4METR is packaged in a compact 4 mm × 4 mm LFCSP (Lead-Frame Chip Scale Package), saving board space and enabling dense circuit designs.
8. Bidirectional Design:
   • The RF input and output of the device are matched elements, and the design is bidirectional. This allows the RF input and output to be interchanged, providing flexibility in circuit configurations.
9. Serial and Parallel Control:
   • The HMC1122LP4METR integrates a driver that supports both serial and parallel control of the attenuator. This enables versatile interfacing options and simplifies integration into existing systems.
10. User-Selectable Power-Up State:
    • The device offers a user-selectable power-up state, allowing customization of the initial state upon power-up, which is useful for system initialization and configuration.

Applications:

The HMC1122LP4METR is suitable for a wide range of applications, including:

• Cellular communication infrastructure
• Microwave radio and Very Small Aperture Terminal (VSAT) systems
• Test equipment and sensors
• IF (Intermediate Frequency) and RF (Radio Frequency) design

In summary, the HMC1122LP4METR is a versatile and high-performance 6-bit digital step attenuator that offers precise attenuation control, high linearity, low insertion loss, fast RF settling time, single power supply operation, high ESD robustness, and a compact package. Its excellent performance and flexibility make it suitable for various applications in the field of RF and microwave engineering.