AD8021

Low Noise, High Speed Amplifier for 16-Bit Systems AD8021 FEATURES Low noise 2.1 nV/√Hz input voltage noise 2.1 pA/√Hz input current noise Custom compensation Constant bandwidth from G = −1 to G = −10 High speed 200 MHz (G = −1) 190 MHz (G = −10) Low power 34 mW or 6.7 mA typical for 5 V supply Output disable feature, 1.3 mA Low distortion −93 dBc second harmonic, fC = 1 MHz −108 dBc third harmonic, fC = 1 MHz DC precision 1 mV maximum input offset voltage 0.5 μV/°C input offset voltage drift Wide supply range, 5 V to 24 V Low price Small packaging Available in SOIC-8 and MSOP-8 CONNECTION DIAGRAM LOGIC 1 REFERENCE –IN 2 +IN 3 –VS 4 AD8021 8 7 6 5 DISABLE +VS VOUT CCOMP 01888-001 Figure 1. SOIC-8 (R-8) and MSOP-8 (RM-8) The AD8021 allows the user to choose the gain bandwidth product that best suits the application. With a single capacitor, the user can compensate the AD8021 for the desired gain with little trade-off in bandwidth. The AD8021 is a well-behaved amplifier that settles to 0.01% in 23 ns for a 1 V step. It has a fast overload recovery of 50 ns. The AD8021 is stable over temperature with low input offset voltage drift and input bias current drift, 0.5 μV/°C and 10 nA/°C, respectively. The AD8021 is also capable of driving a 75 Ω line with ±3 V video signals. www.DataSheet4U.com APPLICATIONS ADC preamps and drivers Instrumentation preamps Active filters Portable instrumentation Line receivers Precision instruments Ultrasound signal processing High gain circui...