The AD8337 is a low‑noise, DC‑coupled variable gain amplifier (VGA) covering frequencies from DC to 100 MHz with a –3 dB bandwidth of 280 MHz. It offers a gain range of 0 dB to 24 dB, linear‑in‑dB scaling of 19.7 dB/V, and can operate from single‑ or dual‑supply voltages (+2.5 V, +5 V). The device is suited for gain‑trim applications, high‑speed ADC drivers, ultrasound, PET scanners, and video systems.
The datasheet provides detailed electrical specifications, absolute maximum ratings, pin descriptions, typical performance curves, and ESD handling guidelines. It also includes a functional block diagram, revision history, and notes on thermal performance and PCB layout for optimal operation.
| Voltage noise | 2.2 nV/√Hz |
|---|---|
| Current noise | 4.8 pA/√Hz |
| Bandwidth (‑3 dB) | 280 MHz |
| Gain range | 0 dB to 24 dB |
| Gain scaling | 19.7 dB/V |
| Power dissipation (2.5 V supply) | 78 mW |
| Supply voltage options | +5 V, +2.5 V, or +5 V |
| Operating temperature range | –40 °C to +85 °C |
The AD8337 can be powered from +5 V, +2.5 V, or a dual‑supply configuration using +5 V and –5 V.
The device is rated for operation from –40 °C up to +85 °C.
The input voltage noise is specified as 2.15 nV/√Hz at 10 MHz.
It consumes about 78 mW when powered from a +2.5 V supply.