28dB Gain RF Amplifier | PL7620
Features & Benefits
- 10-3000 MHz wideband RF operation support
- Adjustable gain range up to 28 dB
- Input/output RF power monitoring capability
- High output 1 dB compression point at +12 dBm
- Low noise figure performance down to 5 dB
- Output IP3 up to +25 dBm linearity performance
- Integrated SNMP and LCD-based control interface
- Gain stability ±0.25 dB over 24 hours
- Temperature variation control within ±2 dB range
- 50 ohm / 75 ohm impedance compatibility
- Multiple RF connector options (F, SMA, BNC, N)
- Embedded signal integrity protection via power threshold alarms
The PL7620 RF amplifier provide controlled RF signal conditioning within RF over Fiber and IF distribution systems where signal strength management directly impacts end-to-end link performance. It is typically deployed in architectures where RF signals must be optimized before optical conversion or restored after long-distance transmission.
In system design applications, the module plays a critical role in maintaining consistent carrier-to-noise performance by ensuring the RF input to optical transmitters is within optimal operating range. It is used downstream to restore RF signal levels after fiber transmission, supporting stable system operation across distributed RF networks. The adjustable gain structure enables engineers to fine-tune system performance based on link budget requirements without modifying surrounding RF infrastructure.
Basic Details
| RF Specification | Value |
| Frequency Range – Bandwidth | 10 – 3000 MHz |
| Amplitude Response @ Unity Gain | ±1.5 |
| Noise Figure | 5dB |
| Output IP3 (OIP3) | 25dBm |
| Input Signal Range – Total Power | None to -23dBm |
| RF Output Signal Range – Total Power | 5dBm |
Where should the PL7620 be placed in an RF signal chain?
It is typically positioned either before the optical transmitter to boost RF drive level or after optical reception to restore signal strength. Selection depends on whether the system requires pre-amplification for link optimization or post-amplification for output levelling.
How does gain adjustment affect system design decisions?
The adjustable gain up to 28 dB enables RF engineers to align signal levels with optical transmitter input requirements without modifying upstream RF sources. This maintains optimal carrier-to-noise performance while avoiding overdrive conditions in RF over Fiber links.
Why is RF power monitoring important in this module?
Integrated input/output RF power monitoring enables real-time verification of signal levels, so that engineers confirm correct operating conditions during commissioning and long-term system operation. This reduces dependency on external test equipment for routine validation.
When is this amplifier preferred over fixed-gain RF modules?
It is preferred in systems where RF levels vary due to distance, split paths, or multi-stage RF over Fiber architectures. The adjustable gain structure provides flexibility to maintain consistent system performance without redesigning the RF chain.
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