●GENERAL DESCRIPTION
●The AD8021 is an exceptionally high performance, high speed voltage feedback amplifier that can be used in 16-bit resolution systems. It is designed to have both low voltage and low current
●noise (2.1 nV/√Hz typical and 2.1 pA/√Hz typical) while operating at the lowest quiescent supply current (7 mA @ ±5 V) among today’s high speed, low noise op amps. The AD8021 operates
●over a wide range of supply voltages from ±2.25 V to ±12 V, as well as from single 5 V supplies, making it ideal for high speed, low power instruments. An output disable pin allows further
●reduction of the quiescent supply current to 1.3 mA.
●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
●APPLICATIONS
●ADC preamps and drivers
●Instrumentation preamps
● Active filters
●Portable instrumentation
●Line receivers
●Precision instruments
● Ultrasound signal processing
● High gain circuits
