Texas Instruments INA195AIDBVTG4

Overview

INA195AIDBVTG4 from Texas Instruments is a high-voltage current shunt monitor IC with 100 V/V fixed gain, −16 V to +80 V common-mode input range, 200 kHz bandwidth, ±3% total output error over temperature, and 900 μA max quiescent current. It operates from a single 2.7 V to 18 V supply and delivers precise voltage-output current sensing in automotive battery monitoring and telecom power management systems.

For engineers reviewing the INA195AIDBVTG4 datasheet, INA195AIDBVTG4 pinout, INA195AIDBVTG4 application, or INA195AIDBVTG4 equivalent, key selection criteria include its 100× gain scaling for low-voltage shunt signals, SOT-23-5 package compatibility with space-constrained PCBs, negative/positive common-mode support, and verified performance across −40°C to +125°C.

Technical Context

The INA195AIDBVTG4 implements a patented dual-amplifier front-end architecture that enables operation across −16 V to +80 V common-mode voltages while powered from a single 2.7–18 V rail. Its internal current-to-voltage conversion eliminates reliance on precision resistor matching for CMR.

It delivers 100 V/V gain with 200 kHz small-signal bandwidth and supports both sourcing-only output drive (up to 10 mA) and load-side or supply-side shunt placement. Accuracy degrades below 20 mV sensed voltage depending on common-mode region, per documented operating cases.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, JEDEC MO-178AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA240A1IDR and MAX40056ATA+T, the INA195AIDBVTG4 offers the lowest quiescent current (900 μA) and smallest footprint (SOT-23-5), making it optimal for space- and power-constrained designs where 200 kHz bandwidth suffices.

Availability

INA195AIDBVTG4 is available at Aetrix Electronics and suitable for automotive battery monitoring, telecom 48 V power distribution, industrial motor drive protection, and welding equipment current control requiring stable component supply and long-term production continuity.

Supply support for INA195AIDBVTG4 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 company specializing in analog and embedded processing technologies, with leadership in precision analog, power management, and signal chain solutions.

The INA19x family was designed for high-voltage, single-supply current sensing in automotive, industrial, and telecom power systems-emphasizing wide common-mode range, small footprint, and robust thermal performance.

FAQ

What is the maximum common-mode voltage the INA195AIDBVTG4 can handle?

The INA195AIDBVTG4 supports a common-mode input voltage range of −16 V to +80 V. This allows it to accurately monitor current in high-side or low-side shunt configurations across automotive battery systems, telecom power supplies, and industrial DC buses without external level-shifting circuitry. The specification is validated per TI SBOS307G datasheet Section 7.3.

Does the INA195AIDBVTG4 support bidirectional current sensing?

Yes, the INA195AIDBVTG4 supports bidirectional current sensing through its −16 V to +80 V common-mode range and differential input architecture. When current flows in either direction across the shunt, the polarity of (VIN+ − VIN−) changes, producing corresponding positive or negative output voltage relative to GND-enabling detection of charge vs. discharge in battery systems.

What is the output drive capability of the INA195AIDBVTG4?

The INA195AIDBVTG4 output stage is designed to source current only, with a typical short-circuit current of ~10 mA. It cannot sink significant current-its sinking capability is approximately 400 μA. Therefore, the output must be loaded toward GND (e.g., with a pull-down resistor or ADC input), not pulled up to V+, to ensure proper operation and avoid saturation.

Can the INA195AIDBVTG4 operate from a 3.3 V supply?

Yes, the INA195AIDBVTG4 operates from a single supply ranging from 2.7 V to 18 V, including 3.3 V. At 3.3 V, its output swing is limited to GND + 50 mV to (V+) – 0.2 V (~3.1 V), and full-scale 100 mV shunt input yields 10 V output-exceeding the supply. Thus, shunt voltage must be reduced (e.g., to ≤33 mV) to keep output within valid range when using 3.3 V supply.

How does temperature affect the accuracy of the INA195AIDBVTG4?

Over −40°C to +125°C, the INA195AIDBVTG4 exhibits ±3% total output error, which includes contributions from gain error (±2%), offset drift (2.5 μV/°C), and common-mode rejection degradation. The dominant contributor is offset drift-adding ~0.3 mV RTI error across the full range-making low-VSENSE (<20 mV) measurements especially sensitive to thermal gradients near the shunt.