1 Features
• 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
• No phase reversal
• Packages:
– Industry-standard SOIC, SON, SOT-23,
TSSOP, and VSSOP

2 Applications
• Intra-dc interconnect (metro)
• Semiconductor test
• Chemistry and gas analyzer
• DC power supply, ac source, electronic load
• Data acquisition (DAQ)
• Lab and field instrumentation

3 Description
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).
The OPA140 achieves 11-MHz unity-gain bandwidth
and 20-V/μs slew rate while consuming only 1.8 mA
(typical) of quiescent current. This device runs on a
single 4.5-V to 36-V supply or dual ±2.25-V to ±18-V
supplies.
All versions are fully specified from –40°C to +125°C
for use in the most challenging environments. The
OPA140 (single) is available in the 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 the 14‑pin SOIC and 14‑pin TSSOP
packages.