AD8368 is a 800MHz linear-in-dB VGA with AGC detector from Analog Devices, featuring analog variable gain range from -12 dB to +22 dB, 37.5 dB/V linear-in-dB scaling, 800MHz of 3dB bandwidth (VGAIN=0.5V), integrated rms detector, 16 dBm P1dB (140MHz), 33 dBm output IP3 (140MHz), 9.5 dB noise figure at maximum gain (140MHz), 50Ohm input and output impedances, single-supply voltage from 4.5V to 5.5V, RoHS-compliant, 24-lead LFCSP package.
The AD8368 is a linear‑in‑dB variable gain amplifier covering frequencies up to 800 MHz with a gain range of –12 dB to +22 dB and integrated rms detector. It operates from a single 4.5 V‑5.5 V supply, consumes about 60 mA, and is RoHS‑compliant in a 24‑lead LFCSP package.
The document includes feature highlights, full specifications, absolute maximum ratings, pin descriptions, performance graphs, circuit descriptions, AGC operation, layout considerations, an evaluation board layout, outline dimensions, and ordering information.
| Frequency Range | 800 MHz |
|---|---|
| Gain Span | 34 dB |
| Gain Scaling | 37.5 dB/V |
| Supply Voltage | 4.5 V to 5.5 V |
| Supply Current | 60 mA |
| Output P1dB | 16 dBm |
| Operating Temperature Range | -40 °C to +85 °C |
The AD8368 provides a gain range from –12 dB to +22 dB.
It operates from a single supply of 4.5 V to 5.5 V.
The absolute maximum RF input level is 20 dBm.
It operates from –40 °C to +85 °C.