Description:

The OPA140, OPA2140, and OPA4140 (OPAx140) operational amplifier (op amp) series are a family of low-power JFET input amplifiers featuring excellent drift and low input bias current. With rail-to-rail output swing and an input range that includes V–, designers can leverage the low-noise characteristics of JFET amplifiers while interfacing to modern single-supply precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). The OPA140 achieves 11MHz unity-gain bandwidth and 20V/μs slew rate while consuming only 1.8mA (typical) of quiescent current. The device operates from a single 4.5V to 36V supply or dual ±2.25V to ±18V supplies. All device versions are rated for operation from –40°C to +125°C, making them suitable for the most challenging environments. The OPA140 (single) is available in 5-pin SOT-23, 8-pin VSSOP, and 8-pin SOIC packages. The OPA2140 (dual) is available in 8-pin SON, 8-pin VSSOP, and 8-pin SOIC packages. The OPA4140 (quad) is available in 14-pin SOIC and 14-pin TSSOP packages.

Features:

• Very low temperature drift: 1 μV/°C (maximum)

• Extremely low offset: 120 μV

• Low input bias current: 10 pA (maximum)

• Ultra-low 1/f noise: 250 nVPP (0.1Hz to 10Hz)

• 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: 4.5V to 36V

• Dual-supply operation: ±2.25V to ±18V

• No phase reversal

• Packages:

– Industry-standard SOIC, SON, SOT-23, TSSOP, and VSSOP

Applications:

• Data center interconnect (metro)

• Semiconductor test

• Chemical and gas analyzers

• DC power supplies, AC power supplies, electronic loads

• Data acquisition (DAQ)

• Laboratory and field instrumentation