Description:

The OPA140, OPA2140, and OPA4140 (OPAx140) operational amplifier (op amp) family is a series of low-power JFET-input amplifiers with excellent drift and low input bias current. With rail-to-rail output swing and input range that includes V–, designers can take advantage of the low-noise characteristics of JFET amplifiers while also interfacing to modern single-supply precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). The OPA140 achieves 11-MHz unity-gain bandwidth and 20-V/µs slew rate while consuming only 1.8 mA (typical) of quiescent current. The device operates from a 4.5-V to 36-V single supply or a ±2.25-V to ±18-V dual supply. All device versions are specified over the operating temperature range of –40°C to +125°C for use in 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 drift: 1 µV/°C (max)

• Extremely low offset: 120 µV

• Low input bias current: 10 pA (max)

• Ultra-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 (max)

• 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

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

Applications:

• Data center interconnect (metro)

• Semiconductor testing

• Chemical and gas analyzers

• DC power supplies, AC power supplies, electronic loads

• Data acquisition (DAQ)

• Laboratory and field instrumentation