AD8337

Data Sheet FEATURES Low noise Voltage noise = 2.2 nV/√Hz Current noise = 4.8 pA/√Hz (positive input) Wide bandwidth (−3 dB) = 280 MHz Nominal gain range: 0 dB to 24 dB (preamp gain = 6 dB) Gain scaling: 19.7 dB/V DC-coupled Single-ended input and output High speed uncommitted op amp input Supplies: +5 V, ±2.5 V, or ±5 V Low power: 78 mW with ±2.5 V supplies APPLICATIONS Gain trim PET scanners High performance AGC systems I/Q signal processing Video Industrial and medical ultrasound Radar receivers General-Purpose, Low Cost, DC-Coupled VGA AD8337 GENERAL DESCRIPTION The AD8337 is a low noise, single-ended, linear-in-dB, generalpurpose, variable gain amplifier (VGA) 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 make the AD8337 ideal for gain trim applications and for driving high speed analog-todigital converters (ADCs). Excellent dc characteristics combined w...