1 Features
• Low quiescent current: 60μA
• Wide power supply range: 2.2V to 36V
• Rail-to-rail output swing
• Low offset voltage: 250μV maximum
• Low offset drift: 3μV/°C maximum
• Low noise: 60nV/√Hz
• Low input bias current: 25nA maximum
• Packages
– 4.9mm × 6mm SOIC
– 9.81mm × 9.43mm PDIP

2 Applications
• Portable electronics
• Field transmitters and sensors
• Pressure transmitters
• Infusion pumps
• Electrocardiograms (ECGs)

3 Description
The INA122 is a precision instrumentation
amplifier for accurate, low-noise differential signal
acquisition. The two-op-amp design provides
excellent performance with very low quiescent current
(60μA), and is designed for portable instrumentation
and data acquisition systems. The INA122 can be
operated with single or dual power supplies from 2.2V
to 36V.
A single external resistor sets gain from 5V/V to
10000V/V. Laser trimming provides very low offset
voltage (250μV maximum), offset voltage drift (3μV/°C
maximum) and excellent common-mode rejection.
Package options include 8-pin plastic DIP and
SOIC surface-mount packages. Both packages are
specified for the −40°C to +85°C temperature range.