1 Features
• Supports Defense, Aerospace, and Medical
Applications:
– Temperature range: –55°C to +150°C, TA
– Controlled Baseline
– One Assembly/Test Site
– One Fabrication Site
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability
• Low input bias currents: 500 pA (typical)
(enables microamp current measurement)
• Low power:
– Low supply voltage, VS: 1.7 V to 5.5 V
– Low quiescent current: 50 μA at 25°C (typical)
• Accuracy:
– Common-mode rejection ratio: 132 dB
(minimum)
– Gain error: ±0.2% (A1 device)
– Gain drift: 7 ppm/°C (maximum)
– Offset voltage, VOS: ±15 μV (maximum)
– Offset drift: 80 nV/°C (maximum)
• Wide common-mode voltage: –0.2 V to +40 V
• Bidirectional current sensing capability
• Gain options:
– INA190A1-EP: 25 V/V
– INA190A2-EP: 50 V/V
– INA190A3-EP: 100 V/V
– INA190A4-EP: 200 V/V
– INA190A5-EP: 500 V/V

2 Applications
• Avionics
• Radar Systems
• Ruggedized Communications
• Smart Munitions
• Thermal Imaging

3 Description
The INA190-EP is a low-power, voltage-output,
current-shunt monitor (also called a currentsense
amplifier). This device is commonly
used for overcurrent protection, precision current
measurement for system optimization, or in closedloop
feedback circuits. The INA190-EP can sense
drops across shunts at common-mode voltages from
–0.2 V to +40 V, independent of the supply voltage.
The low input bias current of the device permits the
use of larger current-sense resistors, thus providing
accurate current measurements in the microamp
range. The low offset voltage of the zero-drift
architecture extends the dynamic range of the current
measurement. This feature allows for smaller sense
resistors with lower power loss, while still providing
accurate current measurements.
The INA190-EP operates from a single 1.7-V to 5.5-
V power supply, and draws a maximum of 65 μA
of supply current when enabled; only 0.1 μA when
disabled. Five fixed gain options are available: 25 V/V,
50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device
is specified over the operating temperature range of
–55°C to +150°C, and offered in the SOT-23 package.