ISL55005 is a high performance broadband amplifier from Intersil. It features high gain, low noise and low return loss, and is widely used in DVB-S LNB cable receiver applications.
The ISL55005 belongs to Intersil's family of high‑performance MMIC silicon bipolar broadband amplifiers. It uses a Darlington configuration with high‑f transistors and offers excellent thermal performance, making it suitable for DVB‑S LNB cable receiver applications and other IF gain‑block uses.
Key specifications include a 75 Ω input impedance, 50 Ω output impedance, a noise figure of 3.6 dB, and an OIP3 of 17 dBm. The device operates from a 3.3 V supply, supports ambient temperatures from –40 °C to +85 °C, and is supplied in a SC‑70‑6 package that complies with JEDEC and RoHS requirements.
| Input impedance | 75 Ω |
|---|---|
| Output impedance | 50 Ω |
| Noise figure | 3.6 dB |
| OIP3 (1.0 GHz) | 17 dBm |
| Small‑signal gain (1.0 GHz) | 16.2 – 18.2 dB |
| Supply voltage (VSP) | +3.3 V |
The device is powered from a 3.3 V supply (VSP = +3.3 V).