OPA140
Overview
The OPA140, OPA2140, and OPA4140 (OPAx140) operational amplifier (op amp) family is a series of low-power JFET input amplifiers that features good drift and low input bias current. The rail-torail output swing and input range that includes V- allow designers to take advantage of the lownoise characteristics of JFET amplifiers while also interfacing to modern, single-supply, precision analogto-digital converters (ADCs) and digital-to-analog converters (DACs).
- Very-low offset drift: 1 μV/°C maximum
- Very-low offset: 120 μV
- Low input bias current: 10 pA maximum
- Very-low 1/f noise: 250 nVPP, 0.1 Hz to 10 Hz
- Low noise: 5.1 nV/√Hz
- Slew rate: 20 V/μs
- Low supply current: 2 mA maximum
- Input voltage range includes V- supply
- Single-supply operation: 4.5 V to 36 V
- Dual-supply operation: ±2.25 V to ±18 V
