The AD8337 is a low noise, single-ended, linear-in-dB, generalpurpose variable gain amplifier usable at frequencies from dc to 100 MHz; the -3 dB bandwidth is 280 MHz. Excellent bandwidth uniformity across the entire gain range and low output-referred noise makes the AD8337 ideal for gain trim applications and for driving high speed ADCs. Excellent dc characteristics combined with high speed make the AD8337 particularly suited for industrial ultrasound, PET scanners, and video applications. Dual-supply operation enables gain control of negative-going pulses such as generated by photodiodes or photomultiplier tubes. The AD8337 uses the popular and versatile ADI exclusive X-AMP architecture with a gain range of 24 dB. The gain control interface provides precise linear-in-dB scaling of 19.7 dB/V, referenced to VCOM.