The AD8021 is an exceptionally high performance, high speed amplifier, designed for 16-bit systems. It features low noise, high speed, low power, low distortion, wide supply range, low price and small packaging.
The AD8021 is a high‑performance, high‑speed op‑amp designed for 16‑bit systems. It offers low voltage and current noise, low power consumption, and a selectable gain bandwidth using a single compensation capacitor. The device is available in SOIC‑8 and MSOP‑8 packages and operates over a wide supply range.
The datasheet provides detailed specifications, pin descriptions, absolute maximum ratings, and application notes such as ADC pre‑amplifier, instrumentation pre‑amp, and active filter designs. It also includes performance graphs for frequency response and power dissipation.
| Small‑Signal Bandwidth (G=+1, 10 pF) | 355 MHz (typ) |
|---|---|
| Slew Rate (G=+1, 10 pF) | 95 V/µs (typ) |
| Input Offset Voltage | 1.0 mV (typ) |
| Operating Supply Voltage Range | 2.5 V to 12 V |
| Quiescent Current (output enabled, +5 V) | 7 mA (typ) |
| Output Voltage Swing (±5 V supply) | -3.5 V to +3.2 V |
The typical quiescent current is about 7 mA for a 5 V supply.
The AD8021 has a typical input offset voltage of 1.0 mV.
It operates from about 2.5 V up to 12 V (and from +2.25 V to +12 V as listed).
At a gain of +1 with a 10 pF compensation capacitor, the typical small‑signal bandwidth is 355 MHz.