Texas Instruments INA193AIDBVRG4

Overview

INA193AIDBVRG4 from Texas Instruments is a high-voltage current shunt monitor IC designed for bidirectional sensing across precision shunt resistors in power rails operating from −16 V to +80 V common-mode voltage, with 20 V/V fixed gain, 500 kHz bandwidth, and ±2.2% total output error over temperature - deployed in battery chargers and telecom power supplies for real-time current feedback.

For engineers reviewing the INA193AIDBVRG4 datasheet, INA193AIDBVRG4 pinout, INA193AIDBVRG4 application, or INA193AIDBVRG4 equivalent, this page delivers verified specifications, SOT-23 pin mapping, functional alternatives, and design-critical accuracy behavior across common-mode and low-VSENSE operating regions.

Technical Context

The INA193AIDBVRG4 employs a patented dual-amplifier front-end architecture that enables operation across −16 V to +80 V common-mode range while powered by a single +2.7 V to +18 V supply - eliminating need for level-shifting or isolated supplies. Its 20 V/V gain is internally trimmed and stable over temperature.

It delivers 500 kHz small-signal bandwidth and supports accurate current measurement down to 20 mV differential input (VSENSE), with output swing limited to (V+) – 0.2 V when sourcing and ≥3 mV above GND - critical for interfacing with 12-bit ADCs or comparator thresholds in closed-loop control.

Key Specifications

Pinout & Package

SOT-23 (DBV) package: 5-pin, 2.90 mm × 1.60 mm body, surface-mount, lead-free, RoHS-compliant - optimized for space-constrained PCB layouts in power modules and compact adapters.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA193AIDBVRG4, INA193AIDBVT offers identical performance in reel format for volume manufacturing, while INA240A1DRCR trades bandwidth and package compatibility for improved accuracy - making the original part optimal for cost-sensitive, space-constrained 500 kHz control loops.

Availability

INA193AIDBVRG4 is available at Aetrix Electronics and suitable for telecom power shelves, notebook battery management, and automotive accessory monitoring requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for INA193AIDBVRG4 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 power management ICs.

The INA19x family was engineered specifically for high-common-mode current sensing in industrial, telecom, and automotive power systems - delivering robust performance where traditional op-amps fail due to input voltage limitations.

FAQ

What is the maximum common-mode voltage the INA193AIDBVRG4 can handle?

The INA193AIDBVRG4 supports a common-mode input voltage range of −16 V to +80 V, independent of its supply voltage (2.7 V to 18 V). This allows direct sensing on negative rails (e.g., −12 V systems) and high-side 48 V/60 V buses without external level-shifting circuitry. Operation at ±80 V is validated per TI's SBOS307G datasheet Absolute Maximum Ratings and Recommended Operating Conditions.

Does the INA193AIDBVRG4 require external gain-setting resistors?

No, the INA193AIDBVRG4 features a factory-trimmed fixed gain of 20 V/V. It contains no external gain configuration pins or resistor networks - simplifying layout, reducing BOM count, and eliminating resistor tolerance-induced errors. All gain-related performance (±1% error at 25°C, ±2% over temperature) is specified and tested internally per the SBOS307G datasheet.

Can the INA193AIDBVRG4 accurately measure currents below 20 mV across the shunt?

Accuracy degrades significantly below 20 mV differential input (VSENSE). Per the SBOS307G datasheet, output error increases sharply in Low VSENSE Cases (e.g., VSENSE < 20 mV), with typical output offset up to 300 mV at VSENSE = 0 mV. For reliable measurement, design for ≥20 mV full-scale shunt drop - e.g., 100 mΩ shunt at 200 mA yields 20 mV.

What is the output voltage swing capability of the INA193AIDBVRG4?

The INA193AIDBVRG4 output swings to within 0.2 V of V+ (e.g., 2.5 V out at V+ = 2.7 V) when sourcing current, and to within 3 mV of GND when sinking. These limits are confirmed in Section 7.5 Electrical Characteristics of SBOS307G. For 3.3 V ADC interfacing, ensure V+ ≥ 3.5 V to guarantee full 0–3.3 V output range.

Is the INA193AIDBVRG4 pin-compatible with other devices in the INA19x family?

The INA193AIDBVRG4 uses Pinout #1 (as defined in the Device Comparison Table), shared with INA194 and INA195. It is **not** pin-compatible with INA196–INA198 (Pinout #2). Swapping requires PCB layout revision. Always verify pin functions in Section 6 (Pin Configuration and Functions) of SBOS307G - e.g., VIN+ and VIN− positions differ between pinouts.