The OPA211 series of precision operational amplifiers achieves very low 1.1
nV/√Hz noise density with a supply current of only 3.6 mA. This series also
offers rail-to-rail output swing, which maximizes dynamic range.
The extremely low voltage and low current noise, high speed, and wide output swing of the
OPA211 series make these devices an excellent choice as a loop filter amplifier in PLL
In precision data acquisition applications, the OPA211 series of op amps provides 700-ns
settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with
only 240-µV of offset and 0.35-µV/°C of drift over temperature, makes the OPA211 ideal for driving
high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of
high-resolution digital-to-analog converters (DACs).
The OPA211 series is specified over a wide dual-power supply range of ±2.25 V to ±18 V,
or for single-supply operation from 4.5 V to 36 V.
This series of op amps is specified from TA = –55°C to