Overview
The HMC895LP4E is a tunable band pass filter integrated circuit (IC) produced by Analog Devices Inc. This monolithic microwave integrated circuit (MMIC) is designed for advanced communications applications, offering a dynamically adjustable solution. The filter features a user-selectable passband frequency, making it an ideal replacement for mechanically tuned designs and switched filter banks. It operates within the frequency range of 6.8 to 12.6 GHz, controlled by an analog tune voltage between 0 and 14V.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Center Frequency Tuning Range | 6.8 | 12.6 | GHz | |
| 3 dB Bandwidth | 10% | |||
| Low Side Rejection Frequency (Rejection >20 dB) | 0.88 * Fcenter | GHz | ||
| High Side Rejection Frequency (Rejection >20 dB) | 1.10 * Fcenter | GHz | ||
| Low Side Sub-Harmonic Rejection (Rejection >40 dB) | 0.75 * Fcenter | GHz | ||
| High Side Sub-Harmonic Rejection (Rejection >40 dB) | 1.22 * Fcenter | GHz | ||
| Re-entry Frequency (Rejection <30 dB) | >40 | GHz | ||
| Insertion Loss | 9 | dB | ||
| Return Loss (2 dB bandwidth) | 12 | dB | ||
| Input IP3 (Pin = 0 to +15 dBm) | 28 | dBm | ||
| Frequency Control Voltage (Vfctl) | 0 | 14 | V | |
| Source/Sink Current (Ifctl ±1 mA) | ±1 | mA | ||
| Low Side/High Side Rejection Control Voltage (Vnctl) | 0 | 14 | V | |
| Source/Sink current (Inctl) ±1 mA | ±1 | mA | ||
| Residual Phase Noise (100 kHz Offset) | -155 | dBc/Hz | ||
| Fcenter Drift Rate | -1.0 | MHz/°C | ||
| Tuning Speed, Phase Settling to within 10° | <200 | ns |
Key Features
- Tunable Band Pass Filter: The HMC895LP4E allows the center frequency to be varied between 6.8 and 12.6 GHz using an analog tune voltage between 0 and 14V.
- Excellent Microphonics: Due to its monolithic design, the filter exhibits excellent microphonics, reducing mechanical sensitivity.
- Fast Tuning Response: The filter features a fast tuning speed, with phase settling to within 10° in less than 200 ns.
- Wideband Rejection: It offers tunable low side/high side rejection and notch capabilities, ensuring wideband rejection.
- Compact Design: Housed in a 24-lead 4x4 mm SMT package, it is a compact alternative to mechanically tuned designs and switched filter banks.
Applications
- Test & Measurement Equipment: Ideal for use in test and measurement instruments requiring dynamic frequency adjustment.
- Military RADAR & EW/ECM: Suitable for military applications where tunable filters are essential.
- SATCOM & Space: Used in satellite communications and space applications due to its reliability and performance.
- Industrial & Medical Equipment: Applicable in various industrial and medical devices that require precise frequency control.
Q & A
- What is the operating frequency range of the HMC895LP4E?
The HMC895LP4E operates within the frequency range of 6.8 to 12.6 GHz. - How is the center frequency of the HMC895LP4E controlled?
The center frequency is controlled by an analog tune voltage between 0 and 14V. - What is the typical 3 dB bandwidth of the HMC895LP4E?
The typical 3 dB bandwidth is approximately 10% of the center frequency. - What are the key applications of the HMC895LP4E?
The HMC895LP4E is used in test & measurement equipment, military RADAR & EW/ECM, SATCOM & space, and industrial & medical equipment. - What is the package type of the HMC895LP4E?
The HMC895LP4E is housed in a 24-lead 4x4 mm SMT package. - What is the insertion loss of the HMC895LP4E?
The insertion loss is typically around 9 dB. - How fast is the tuning speed of the HMC895LP4E?
The tuning speed includes phase settling to within 10° in less than 200 ns. - What is the residual phase noise of the HMC895LP4E at 100 kHz offset?
The residual phase noise is -155 dBc/Hz at 100 kHz offset. - Is the HMC895LP4E suitable for high-frequency applications?
Yes, it is suitable for high-frequency applications due to its wideband rejection and fast tuning response. - What are the benefits of the monolithic design of the HMC895LP4E?
The monolithic design provides excellent microphonics, reducing mechanical sensitivity and improving overall performance.
