Texas Instruments INA195AIDBVRG4

Overview

INA195AIDBVRG4 from Texas Instruments is a high-side and low-side current shunt monitor IC with voltage output, designed for bidirectional sensing across shunt resistors at common-mode voltages from −16 V to +80 V. It delivers 100 V/V fixed gain, 200 kHz bandwidth, ±3% total output error over temperature, and operates from a single 2.7-V to 18-V supply drawing ≤900 μA - enabling precision current monitoring in automotive battery management and telecom power supplies.

For engineers reviewing the INA195AIDBVRG4 datasheet, INA195AIDBVRG4 pinout, INA195AIDBVRG4 application, or INA195AIDBVRG4 equivalent, key selection criteria include its −16 V to +80 V common-mode range, 100 V/V gain accuracy, SOT-23-5 package footprint, and compatibility with high-voltage industrial power rails where ground-referenced sensing is impractical.

Technical Context

The INA195AIDBVRG4 implements a patented dual-amplifier front-end architecture: amplifier A1 activates for negative common-mode voltages (−16 V to 0 V), while A2 handles positive ranges (0 V to +80 V), ensuring seamless transition and stable operation across the full input range. Its internal current-to-voltage conversion eliminates reliance on precision external resistor matching for common-mode rejection.

This architecture enables 94 dB typical CMR at DC and >100 dB over temperature, with RTI offset voltage of ±2 mV max and 2.5 μV/°C drift - critical for maintaining accuracy in wide-temperature automotive and industrial environments where supply rails and load voltages vary significantly.

Key Specifications

Pinout & Package

SOT-23-5 package (DBV) with 2.90 mm × 1.60 mm body size, optimized for automated placement and thermal performance in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA195AIDBVRG4, INA195AIDBVT offers identical performance in tape-and-reel format for high-volume assembly, while INA240A1DRCR trades compact size and cost for higher precision and bandwidth - making it suitable only when accuracy outweighs footprint constraints.

Availability

INA195AIDBVRG4 is available at Aetrix Electronics and suitable for automotive battery management, telecom 48 V power distribution, and industrial motor drive protection requiring stable component supply across extended temperature and high-voltage operating conditions.

Supply support for INA195AIDBVRG4 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-accuracy, high-common-mode current sensing in automotive, industrial, and telecom power systems - prioritizing robustness, wide operating range, and ease of integration over general-purpose op-amp flexibility.

FAQ

What is the maximum common-mode voltage the INA195AIDBVRG4 can handle?

The INA195AIDBVRG4 supports a common-mode input voltage range of −16 V to +80 V, meaning its VIN+ and VIN− pins can operate at potentials up to 80 V above or 16 V below ground - independent of the V+ supply voltage. This capability is essential for high-side sensing in 48 V telecom systems and battery monitoring where the shunt sits between the supply rail and load. The INA195AIDBVRG4 maintains specified accuracy across this full range when V_SENSE ≥20 mV.

Does the INA195AIDBVRG4 require external gain-setting resistors?

No, the INA195AIDBVRG4 features a factory-trimmed fixed gain of 100 V/V, eliminating the need for external resistors. This ensures consistent scaling (e.g., 50 mV shunt drop → 5.0 V output) without layout sensitivity or tolerance-induced errors. The internal gain architecture is part of the monolithic die design, so the INA195AIDBVRG4 delivers repeatable performance across units and temperature without calibration.

What is the operating temperature range for the INA195AIDBVRG4?

The INA195AIDBVRG4 is fully specified from −40°C to +125°C ambient temperature, with guaranteed performance including ±3% total output error, 200 kHz bandwidth, and 900 μA max quiescent current across this extended range. It also survives storage from −65°C to +150°C and operates safely up to +150°C junction temperature - making it suitable for under-hood automotive, industrial motor drives, and outdoor telecom equipment.

Can the INA195AIDBVRG4 be used for bidirectional current sensing?

Yes, the INA195AIDBVRG4 supports bidirectional current sensing because its −16 V to +80 V common-mode range allows VIN+ to be at a lower potential than VIN− (e.g., during reverse current flow). When V_SENSE = VIN+ − VIN− is negative, the output voltage drops proportionally (e.g., −50 mV × 100 = −5 V), provided the output stage has appropriate headroom - confirmed by its ability to swing within 300 mV of GND and (V+) − 0.2 V. This behavior is explicitly characterized in the datasheet's low-V_SENSE regions.

What package type does the INA195AIDBVRG4 use, and is it RoHS compliant?

The INA195AIDBVRG4 uses the SOT-23-5 (DBV) package, measuring 2.90 mm × 1.60 mm with 0.95 mm height - a standard surface-mount outline compatible with automated pick-and-place and reflow soldering. It is RoHS compliant and lead-free per TI's official product documentation, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements for unlimited floor life at ≤30°C/85% RH.