1FEATURES
• Very Low Offset Drift
• Very Low Offset
• Low Input Bias Current
• Very Low 1/f Noise
• Low Noise
• Slew Rate
• Low Supply Current
• Input Voltage Range Includes V– Supply
• Single-Supply Operation: 4.5 V to 36 V
• Dual-Supply Operation: ±2.25 V to ±18 V
• No Phase Reversal

APPLICATIONS
• Battery-Powered Instruments
• Industrial Controls
• Medical Instrumentation
• Photodiode Amplifiers
• Active Filters
• Data Acquisition Systems
• Automatic Test Systems

DESCRIPTION
The OPA140A operational amplifier is a low-power JFET input amplifier that features good drift and low input
bias current. The rail-to-rail output swing and input range that includes V– allow designers to take advantage of
the low-noise characteristics of JFET amplifiers while also interfacing to modern, single-supply, precision analogto-
digital converters (ADCs) and digital-to-analog converters (DACs). The OPA140A runs on a single 4.5-V to
36-V supply or dual ±2.25-V to ±18-V supplies.