Texas Instruments INA193AMDBVREPG4

Overview

INA193AMDBVREPG4 from Texas Instruments is a precision current shunt monitor IC with voltage output, designed for high-accuracy bidirectional current sensing in harsh industrial and aerospace environments. It features a –16 V to 80 V common-mode input range, 20 V/V fixed gain, 500 kHz bandwidth, ±2% total output error over temperature, and operates from a single 2.7–18 V supply - enabling direct integration into 12 V automotive power rails or 48 V telecom systems.

For engineers reviewing the INA193AMDBVREPG4 datasheet, INA193AMDBVREPG4 pinout, INA193AMDBVREPG4 application, or INA193AMDBVREPG4 equivalent, this page delivers verified technical context, validated pin-level design meaning, real-world application constraints (e.g., low-VSENSE accuracy degradation), and two confirmed alternative parts with documented functional and application differences.

Technical Context

The INA193AMDBVREPG4 employs a patented dual-amplifier front-end architecture that converts differential shunt voltage into current, then back to voltage via precision current mirroring - eliminating reliance on matched resistors for common-mode rejection. This enables stable operation across –16 V to 80 V common-mode voltages while powered from a single 2.7–18 V rail.

Its 20 V/V gain is factory-trimmed and fixed; output swing is rail-to-rail limited (V+ – 0.2 V max, GND + 50 mV min), and it supports accurate measurement only when VSENSE ≥20 mV and VCM ≥VS - otherwise exhibiting up to 300 mV output offset in low-signal regions. Quiescent current remains ≤1300 μA across temperature.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm profile, surface-mount, RoHS-compliant, MSL Level-2-260°C-1 year.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current shunt monitor applications.

Compared with INA193A-Q1, INA193AMDBVREPG4 offers broader temperature capability (–55°C vs –40°C) and defense/aerospace qualification, while INA240A1 trades common-mode robustness for higher speed and lower offset - making each suitable for distinct system-level requirements rather than drop-in replacement.

Availability

INA193AMDBVREPG4 is available at Aetrix Electronics and suitable for welding equipment, automotive power distribution, telecom rectifier modules, and battery charger management requiring stable component supply across extended temperature and high-reliability environments.

Supply support for INA193AMDBVREPG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and high-reliability IC design.

The INA193A-EP product line was developed specifically for defense, aerospace, and medical applications demanding extended temperature operation, controlled manufacturing baselines, and long-term product lifecycle support - not general-purpose current sensing.

FAQ

What is the guaranteed common-mode voltage range for INA193AMDBVREPG4?

The INA193AMDBVREPG4 is specified for continuous operation from –16 V to +80 V common-mode voltage, independent of its 2.7–18 V supply rail. This range is tested and guaranteed per TI's SBOS400A datasheet, enabling direct connection to battery terminals, motor windings, or telecom power buses without external level-shifting circuitry. Operation outside this range risks permanent damage or undefined behavior.

Does INA193AMDBVREPG4 support bidirectional current sensing?

Yes, the INA193AMDBVREPG4 supports bidirectional current sensing because its –16 V to +80 V common-mode input range allows VIN+ to fall below VIN− (e.g., during reverse current flow in battery discharge). However, accurate measurement requires VSENSE ≥20 mV and VCM ≥VS; for true zero-crossing accuracy, external circuitry or a dedicated bidirectional part like INA240 is recommended.

What is the maximum capacitive load the INA193AMDBVREPG4 output can drive?

The INA193AMDBVREPG4 output is stable with up to 10 nF capacitive load, as confirmed in the Electrical Characteristics table. Driving larger loads (e.g., long cables or unbuffered ADC inputs) may cause peaking or oscillation; TI recommends adding a series resistor (e.g., 10–50 Ω) between OUT and the load to isolate capacitance if stability issues arise in the target application.

Can INA193AMDBVREPG4 be used with a 3.3 V supply?

Yes, the INA193AMDBVREPG4 operates down to 2.7 V supply, so 3.3 V is fully supported. At 3.3 V, the output swing is limited to approximately 0.1–3.1 V (GND + 50 mV to V+ – 0.2 V), and full-scale 100 mV shunt input yields 2.0 V output - ensuring compatibility with 3.3 V ADC references. Quiescent current remains ≤1300 μA.

What does the "EP" suffix in INA193AMDBVREPG4 signify?

The "EP" suffix denotes Enhanced Product - a TI designation for devices meeting stringent defense, aerospace, and medical requirements, including extended temperature range (–55°C to +125°C), controlled baseline manufacturing, single assembly/test/fab sites, and extended product life cycle support. The "G4" suffix indicates green (Pb-free, RoHS-compliant) packaging with NiPdAu lead finish.