1 Features
• Wide common-mode voltage:
– Operational voltage: −4 V to +110 V
– Survival voltage: −20 V to +120 V
• Excellent CMRR:
– 160-dB DC-CMRR
– 85-dB AC-CMRR at 50 kHz
• Accuracy:
– Gain:
• Gain error: ±0.15% (maximum)
• Gain drift: ±10 ppm/ °C (maximum)
– Offset:
• Offset voltage: ±15 μV (typical)
• Offset drift: ±0.05 μV/ °C (typical)
• Available gains:
– INA293A1, INA293B1 : 20 V/V
– INA293A2, INA293B2 : 50 V/V
– INA293A3, INA293B3 : 100 V/V
– INA293A4, INA293B4 : 200 V/V
– INA293A5, INA293B5 : 500 V/V
• High bandwidth: 1.3 MHz
• Slew rate: 2.5 V/μs
• Quiescent current: 1.5 mA

2 Applications
• Active antenna system mMIMO (AAS)
• Macro remote radio unit (RRU)
• 48-V rack server
• 48-V merchant network & server power supply
(PSU)
• 48-V battery management systems (BMS)

3 Description
The INA293 is a ultra-precise current sense amplifier
that can measure voltage drops across shunt resistors
over a wide common-mode range from –4 V to 110
V. The negative common-mode voltage allows the
device to operate below ground, thus accommodating
precise measurement of recirculating currents in halfbridge
applications. The combination of a low offset
voltage, small gain error and high DC CMRR enables
highly accurate current measurement. The INA293 is
not only designed for DC current measurement, but
also for high-speed applications (ex. Fast over-current
protection) with a high bandwidth of 1.3 MHz and an
85-dB AC CMRR (at 50 kHz).
The INA293 operates from a single 2.7-V to 20-
V supply, drawing 1.5 mA of supply current. The
INA293 is available with five gain options: 20 V/V,
50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain
options address wide dynamic range current-sensing
applications.
The INA293 is specified over an operating
temperature range of −40 °C to +125 °C and is
offered in a space-saving SOT-23 package with two
pin-out variants.