ADI AD811SQ/883B

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Overview

A wideband current feedback operational amplifier, the AD811 is optimized for broadcast-quality video systems. The -3 dB bandwidth of 120 MHz at a gain of +2 and differential gain and phase of 0.01% and 0.01° (RL = 150 W) make the AD811SQ/883B an excellent choice for all video systems. The AD811SQ/883B is designed to meet a stringent 0.1 dB gain flatness specification to a bandwidth of 35 MHz (G = +2) in addition to the low differential gain and phase errors. This performance is achieved whether driving one or two back terminated 75 W  cables, with a low power supply current of 16.5 mA. Furthermore, the AD811SQ/883B is specified over a power supply range of ±4.5 V to ±18 V.

The AD811SQ/883B is ideal as an ADC or DAC buffer in data acquisition systems due to its low distortion up to 10 MHz and its wide unity gain bandwidth.Because the AD811SQ/883B is a current feedback amplifier, this bandwidth can be maintained over a wide range of gains.The AD811SQ/883B also offers low voltage and current noise of 1.9nV/√Hz and 20 pA/√Hz, respectively, and excellent dc accuracy for wide dynamic range applications.

Features

Applications

• Addition operation circuits
• Subtraction operation circuits
• single/dual op amp sum and difference circuits
• Integrator circuits
• Differentiator circuits
• Logarithmic operation circuits
• Exponential operation circuits
• Multiplication circuits
• Division circuits
• Precision measurement