Texas Instruments INA193AIDBVTG4

Overview

INA193AIDBVTG4 from Texas Instruments is a high-voltage current shunt monitor IC designed for bidirectional sensing across shunt resistors in power rails with common-mode voltages from −16 V to +80 V. It delivers 20 V/V fixed gain, operates from a single +2.7 V to +18 V supply, draws ≤900 μA quiescent current, and supports −40°C to +125°C operation in a 5-pin SOT-23 package-enabling precise current monitoring in automotive battery management and telecom power supplies.

For engineers reviewing the INA193AIDBVTG4 datasheet, INA193AIDBVTG4 pinout, INA193AIDBVTG4 application, or INA193AIDBVTG4 equivalent, key selection criteria include its −16 V to +80 V common-mode range, 20 V/V gain accuracy (±2.2% total output error over temperature), 500 kHz bandwidth, input bias current (±16 μA max), and SOT-23 thermal performance (R_θJA = 221.7°C/W).

Technical Context

The INA193AIDBVTG4 uses a patented dual-amplifier topology that converts differential shunt voltage into current, then back to voltage via precision resistor networks-decoupling common-mode rejection from resistor matching constraints. This enables stable operation across −16 V to +80 V common-mode while powered from a single low-voltage rail.

Its internal architecture dynamically selects between amplifier A1 (for negative common-mode) and A2 (for positive common-mode), with seamless transition at 0 V. The 20 V/V gain is implemented via laser-trimmed on-die resistors, supporting accurate current-to-voltage conversion without external gain-setting components.

Key Specifications

Pinout & Package

INA193AIDBVTG4 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts and thermal dissipation in high-density power modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA194AIDBVT and INA240A2IDR, the INA193AIDBVTG4 offers the only combination of −16 V common-mode tolerance, single-supply operation, and SOT-23 footprint-making it uniquely suitable for cost-sensitive, space-constrained automotive and telecom applications requiring robust negative-rail sensing.

Availability

INA193AIDBVTG4 is available at Aetrix Electronics and suitable for automotive battery management, telecom DC distribution, industrial motor drive phase sensing, and laptop power adapter feedback requiring stable component supply and long-term production continuity.

Supply support for INA193AIDBVTG4 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, embedded processing, and connectivity technologies, with decades of expertise in precision signal conditioning and power management ICs.

The INA19x family was engineered specifically for high-voltage current sensing in harsh environments-targeting automotive, industrial, and telecom power systems where wide common-mode range and single-supply simplicity are critical.

FAQ

What is the maximum common-mode voltage the INA193AIDBVTG4 can handle?

The INA193AIDBVTG4 supports a common-mode input voltage range of −16 V to +80 V, independent of its supply voltage. This allows direct connection to high-side or low-side shunts in 48 V automotive systems, telecom rectifiers, and industrial power rails-even during load dump or cold-crank transients. The specification is validated per TI's SBOS307G datasheet Section 7.3.

Does the INA193AIDBVTG4 require external gain-setting resistors?

No. The INA193AIDBVTG4 integrates a factory-trimmed 20 V/V gain amplifier using on-die laser-trimmed resistors. No external components are needed to achieve its specified transfer function-reducing BOM count, layout area, and calibration complexity. This is confirmed in the Device Comparison Table and Pin Configuration sections of the official datasheet.

Can the INA193AIDBVTG4 operate from a 3.3 V supply?

Yes. The INA193AIDBVTG4 operates from a single supply ranging from +2.7 V to +18 V. At 3.3 V, it maintains full functionality-including −16 V to +80 V common-mode sensing-though output swing is limited to (V+) – 0.2 V and (GND) + 50 mV. This makes it compatible with modern low-voltage microcontrollers and battery-powered systems.

What is the total output error specification for INA193AIDBVTG4 over temperature?

The INA193AIDBVTG4 has a maximum total output error of ±2.2% over the full operating temperature range of −40°C to +125°C. This includes contributions from gain error, offset voltage drift, and nonlinearity, as specified in Electrical Characteristics Table 7.5 of the SBOS307G datasheet under "Total Output Error Over Temperature" at V_SENSE = 100 mV.

Is the INA193AIDBVTG4 pin-compatible with other devices in the INA19x family?

Yes-the INA193AIDBVTG4 shares Pinout #1 with INA194AIDBVT and INA195AIDBVT (same DBV package, identical pin assignments). However, it is not pin-compatible with INA196–INA198, which use Pinout #2. This distinction is explicitly documented in the Device Comparison Table and Pin Configuration section of the TI datasheet.