The AD8353 is a broadband, fixed-gain linear amplifier that operates at frequencies from 100 MHz up to 2.7 GHz. It features a fixed gain of 20 dB, linear output power up to 9 dBm, input/output internally matched to 50 Ω, temperature and power supply stability, and a noise figure of 5.3 dB.
The AD8353 is a broadband, fixed‑gain RF gain block from Analog Devices that operates from 100 MHz to 2.7 GHz. It delivers a 20 dB fixed gain and up to 9 dBm output power, making it suitable for VCO buffers, transmitter pre‑drivers, and low‑power antenna drivers.
The document includes detailed specifications, theory of operation, recommended circuit connections, and an evaluation board layout. Key performance figures such as noise figure, reverse isolation, and supply current are listed, along with absolute maximum ratings and ordering information.
| Fixed Gain | 20 dB |
|---|---|
| Frequency Range | 0.1 – 2.7 GHz |
| Gain at 900 MHz | 19.8 dB |
| Noise Figure at 900 MHz | 5.3 dB |
| Output 1 dB Compression Point (900 MHz) | 9.1 dBm |
| Reverse Isolation (900 MHz) | -35.6 dB |
The AD8353 provides a fixed gain of 20 dB.
The noise figure at 900 MHz is 5.3 dB.